Role: Site Reliability Engineers (SRE)
Location: London, UK - 5 Days Onsite
Job Type: Contract & Fixed term Employment

Domain:Banking / Finance / Trading Market Risk

Skills:

• SRE experience with Python-based applications(not Java)
• Exposure to cloud technologies
• Familiarity with Athena ecosystemor similar (SecDB, Quartz)
• Trade Lifecycle / Market Risk / Risk platform experience

Experience:Minimum 8+ years

SRE Role description

We need an experienced SRE to focus predominantly on automation, optimization, and process re-engineering using AI for the Market Risk Platform. Success is measured by capacity created 9toil eliminated, fewer manual steps, faster recovery, safer/faster changes) not by being the primary BAU support resources. Strong Python and provable agentic AI delivery

Primary Objectives:

Eliminate Operational toil and recurring manual work through durable automation

Re-engineer support/change processes to reduce handoffs, approvals friction and rerun complexity

Industrialize reliability operations so existing SREs spend less time firefighting and more time engineering

Key Responsibilities (Automation & Process first)

Automation Engineering (Core)

Build production grade automation in Python(tools, services, workflows) to remove repetitive work: environment checks, dependency validation, automated reruns/reprocessing, safe restarts, drift detection, remediation actions, and standardized operation tasks

Create self-service capabilities for common requests(guard railed, auditable, repeatable)

Implement automation with Safety: idempotency, dry-run modes, approval gates where needed, rollback/undo strategies, and clear audit trails

Process Re-engineering (Core)

Map current operation processes (incident/problem/change, release readiness, rerun/recovery, access/entitlements, environment onboarding) and redesign them to remove waster and reduce cycle time.

Standardize runbooks/playbooks into executable workflows, reduce tribal knowledge via templates, checklists, and automated pre-flight controls

Defined and track operation KPIs (toil hours removed, alert volume reduction, MTTR improvements, change failure rate reduction, rerun time reduction).

Agentic AI

Design and implement agentic workflows that take action using tools/runbooks(e.g., diagnostics, evidence gathering, correlation, guided remediation, change-risk checks, automated rerun orchestration)

Put strong controls in place: soped permissions, deterministic fallbacks, human-in-the-loop approvals for risky actions, evaluation harnesses and measurable outcomes.

Productionize with monitoring, logging and post incident learnings feeding back into the agent/tooling

Observability (enablement for automation)

Required skills & Experience

Senior SRE experience on distributed systems and batch/intraday workloads in a production environment.

Strong Python

Provable agentic AI experience showingTool integration, guard rails, evaluation approach, Measurable impact (toil reduction, MTTR reduction, alert reduction etc)

Demonstrated process optimization ability (removing steps/handoffs, standardizing workflows, implementing light weight controls with metrics)

Strong Linux and troubleshooting fundamentals across application/system/network layers

Experience working across mixed estates ( On Pre VMs + Cloud, with some Kubernetes exposure for operational monitoring/reruns)

Differentiators

Exposure to Banking/Finance Market Risk Domains

Experience and knowledge of Athena eco system familiarity or similar (Sec DB Quartz)

We believe in better. And we make it happen.
Better content. Better products. And better careers.
Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, SkyQ to Sky Glass, we never stand still. We optimise and innovate.
We turn big ideas into the products, content and services millions of people love.
And we do it all right here at Sky.
About the role
Join us as an Engineering Lead in Sky’s Content Platform, building and operating the systems that power content delivery at scale. From video ingest and encoding to metadata and distribution, you’ll work on high-impact services used by millions of customers while setting technical direction, raising engineering standards, and delivering reliable, scalable services in a fast-moving, cloud-native environment.
Please note - this is a hybrid role with an on-call rotation twice a month.
What you’ll do

• Build and operate cloud-native services on AWS using microservices and event-driven architecture
• Deliver independently deployable features with a strong focus on quality, reliability, and performance
• Contribute to code, reviews, and team discussions to maintain high engineering standards
• Own services end to end, including deployment, monitoring, and production support, with out-of-hours participation where required
• Develop and improve CI/CD pipelines, automated testing, and infrastructure as code
• Work on systems supporting video ingest, encoding, metadata, and content distribution workflows
• Use observability and metrics to identify issues and improve system performance
• Collaborate with engineers, analysts, and QA to deliver high-quality solutions

What you’ll bring

• Strong backend engineering experience with Python preferred, and the ability to work across or pick up other languages such as Java or C#
• Strong understanding of distributed systems and event-driven architectures, with experience in video, encoding, or broadcast workflows
• Hands-on experience building and operating services on AWS
• Strong experience designing and delivering APIs and microservices
• Experience with CI/CD pipelines, automated testing, and production support
• Ability to debug and resolve issues in production environments
• A pragmatic mindset with the ability to deliver value while maintaining quality
• Strong communication skills and the ability to work effectively in a team

Team overview
Our Content Technology and Innovation team delivers high-quality content to homes, customer devices, businesses, and commercial partners across our European markets. With over 2500 colleagues from around the world, we combine our strategic insights, engineering know-how and operational excellence to use the most innovative technologies to create and distribute our award-winning content.
The rewards
There’s a reason people can’t stop talking about #LifeAtSky. Our great range of rewards really are something special, here are just a few:

• Sky Q, for the TV you love all in one place
• A generous pension package
• Private healthcare
• Discounted mobile and broadband
• Access a wide range of exclusive Sky VIP rewards and experiences

Inclusion & how you’ll work
We are a Disability Confident Employer, and welcome and encourage applications from all candidates. We will look to ensure a fair and consistent experience for all, and will make reasonable adjustments to support you where appropriate. Please flag any adjustments you need to your recruiter as early as you can.
We’ve embraced hybrid working and split our time between unique office spaces and the convenience of working from home. You’ll find out more about what hybrid working looks like for your role later on in the recruitment process.
Your office space:
Our Osterley Campus is a 10-minute walk from Syon Lane train station. Or you can hop on one of our free shuttle buses that run to and from Osterley, Gunnersbury, Ealing Broadway and South Ealing tube stations. There’s also plenty of bike shelters and showers.
On campus, you’ll find 13 subsidised restaurants, cafes, and a Waitrose. You can keep in shape at our subsidised gym, catch the latest shows and movies at our cinema, get your car washed and even get pampered at our beauty salon.
We’d love to hear from you
Inventive, forward-thinking minds come together to work in Tech, Product and Data at Sky. It’s a place where you can explore what if, how far, and what next.
But better doesn’t stop at what we do, it’s how we do it, too. We embrace each other’s differences. We support our community and contribute to a sustainable future for our business and the planet.
If you believe in better, we’ll back you all the way.
Just so you know: if your application is successful, we’ll ask you to complete a criminal record check. And depending on the role you have applied for and the nature of any convictions you may have, we might have to withdraw the offer.

We believe in better. And we make it happen.

Better content. Better products. And better careers.

Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, SkyQ to Sky Glass, we never stand still. We optimise and innovate.

We turn big ideas into the products, content and services millions of people love.

And we do it all right here at Sky.

About the role

Join us as an Engineering Lead in Sky’s Content Platform, building and operating the systems that power content delivery at scale. From video ingest and encoding to metadata and distribution, you’ll work on high-impact services used by millions of customers while setting technical direction, raising engineering standards, and delivering reliable, scalable services in a fast-moving, cloud-native environment.

Please note - this is a hybrid role with an on-call rotation twice a month.

What you’ll do

Build and operate cloud-native services on AWS using microservices and event-driven architecture Deliver independently deployable features with a strong focus on quality, reliability, and performance Contribute to code, reviews, and team discussions to maintain high engineering standards Own services end to end, including deployment, monitoring, and production support, with out-of-hours participation where required Develop and improve CI/CD pipelines, automated testing, and infrastructure as code Work on systems supporting video ingest, encoding, metadata, and content distribution workflows Use observability and metrics to identify issues and improve system performance Collaborate with engineers, analysts, and QA to deliver high-quality solutions What you’ll bring

Strong backend engineering experience with Python preferred, and the ability to work across or pick up other languages such as Java or C# Strong understanding of distributed systems and event-driven architectures, with experience in video, encoding, or broadcast workflows Hands-on experience building and operating services on AWS Strong experience designing and delivering APIs and microservices Experience with CI/CD pipelines, automated testing, and production support Ability to debug and resolve issues in production environments A pragmatic mindset with the ability to deliver value while maintaining quality Strong communication skills and the ability to work effectively in a team Team overview

Our Content Technology and Innovation team delivers high-quality content to homes, customer devices, businesses, and commercial partners across our European markets. With over 2500 colleagues from around the world, we combine our strategic insights, engineering know-how and operational excellence to use the most innovative technologies to create and distribute our award-winning content.

The rewards

There’s a reason people can’t stop talking about #LifeAtSky. Our great range of rewards really are something special, here are just a few:

Sky Q, for the TV you love all in one place A generous pension package Private healthcare Discounted mobile and broadband Access a wide range of exclusive Sky VIP rewards and experiences Inclusion & how you’ll work

We are a Disability Confident Employer, and welcome and encourage applications from all candidates. We will look to ensure a fair and consistent experience for all, and will make reasonable adjustments to support you where appropriate. Please flag any adjustments you need to your recruiter as early as you can.

We’ve embraced hybrid working and split our time between unique office spaces and the convenience of working from home. You’ll find out more about what hybrid working looks like for your role later on in the recruitment process.

Your office space:

Our Osterley Campus is a 10-minute walk from Syon Lane train station. Or you can hop on one of our free shuttle buses that run to and from Osterley, Gunnersbury, Ealing Broadway and South Ealing tube stations. There’s also plenty of bike shelters and showers.

On campus, you’ll find 13 subsidised restaurants, cafes, and a Waitrose. You can keep in shape at our subsidised gym, catch the latest shows and movies at our cinema, get your car washed and even get pampered at our beauty salon.

We’d love to hear from you Inventive, forward-thinking minds come together to work in Tech, Product and Data at Sky. It’s a place where you can explore what if, how far, and what next.

But better doesn’t stop at what we do, it’s how we do it, too. We embrace each other’s differences. We support our community and contribute to a sustainable future for our business and the planet.

If you believe in better, we’ll back you all the way.

Just so you know: if your application is successful, we’ll ask you to complete a criminal record check. And depending on the role you have applied for and the nature of any convictions you may have, we might have to withdraw the offer.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

What We do / The Team: Markets Operations Technology is going through an exciting phase of transformation in margin and collateral domain. We are re-engineering our technology estate to achieve world-leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post-trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise.

Role Overview/What will you do: As Lead Software Engineer in our global technology team, you will be working with a group of passionate engineers who build technical solutions to complex business problems.
You will be instrumental in shaping the future of our product and working towards a target state of a fully automated platform with minimal manual interventions. You will have an opportunity to participate in the whole spectrum of building a software solution, closely working with product teams and users. We expect you to contribute to our vision of building a strong engineering culture within our global teams.
This role is for someone who is a strong technologist, enjoys solving engineering challenges, has experience in building robust and high-quality solutions, has excellent communication skills and can manage multiple priorities simultaneously.

Key Skills and Experience required:

• Hands-on professional software development experience
• Proficiency in programming in Java, Python, JavaScript or React
• Experience of building RESTful APIs using popular frameworks like Spring
• Experience of working with event driven systems, microservices, micro-frontend UIs
• Experience of following TDD and clean code principles
• Proficiency with data structures, algorithms and SQL
• Able to independently work in fast paced and rapidly changing environment
• Bachelor’s degree in computer science or engineering field involving software programming or systems engineering

Any Beneficial / Nice to have skills and experience:

• Experience of using cloud services such as AWS and distributed systems such as Kafka, Kubernetes, S3, DynamoDB, MongoDB or any other NoSQL database
• Experience of working in investment bank or financial services industry

What we’ll provide you:

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

What We do / The Team: Markets Operations Technology is going through an exciting phase of transformation in margin and collateral domain. We are re-engineering our technology estate to achieve world-leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post-trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise.

Role Overview/What will you do: As Principal Software Engineer in our global technology team, you will be working with a group of passionate engineers who build technical solutions to complex business problems.
You will be instrumental in shaping the future of our product and working towards a target state of a fully automated platform with minimal manual interventions. You will have an opportunity to participate in the whole spectrum of building a software solution, closely working with product teams and users. We expect you to contribute to our vision of building a strong engineering culture within our global teams.
This role is for someone who is a strong technologist, deep understanding of modern technologies, distributed system design, enjoys solving engineering challenges, has experience in building robust and high-quality solutions, has excellent communication skills and can manage multiple priorities simultaneously.

Key Skills and Experience required:

• Hands-on professional software development experience
• Experience of designing distributed systems, microservices, micro-frontend UIs
• Experience of using cloud services such as AWS and distributed systems such as Kafka, Kubernetes, S3, DynamoDB, MongoDB or any other NoSQL database
• Experience of following TDD and passionate about clean code principles
• Proficiency in programming in Java, Python, JavaScript or React
• Solid understanding and experience of using data structures, algorithms and SQL
• Able to independently work in fast paced and rapidly changing environment
• Bachelor’s degree in computer science or engineering field involving software programming or systems engineering

Any Beneficial / Nice to have skills and experience:

• Experience of working in investment bank or financial services industry
• Able to apply entrepreneurial approach to software development and problem solving

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

What We do / The Team: Markets Operations Technology is going through an exciting phase of transformation in margin and collateral domain. We are re-engineering our technology estate to achieve world-leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post-trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise.

Role Overview/What will you do: As Senior Software Engineer in our global technology team, you will be working with a group of passionate engineers who build technical solutions to complex business problems. You will have an opportunity to participate in the whole spectrum of building software solutions, closely working with product teams and users. We expect you to contribute to our vision of building a strong engineering culture within our global teams.

This role is for someone who enjoys solving engineering challenges, has experience in building robust and high-quality solutions, has excellent communication skills and can manage multiple priorities simultaneously.

Key Skills and Experience required:

• Bachelor’s degree in computer science or engineering field involving software programming or systems engineering
• Hands-on professional software development experience
• Proficiency in programming in mainly Java, React and/or Python
• Strong hands-on experience of building RESTful APIs using popular frameworks like Spring
• Experience of following TDD and clean code principles
• Proficiency with data structures, algorithms and SQL
• Able to independently work in fast paced and rapidly changing environment

Any Beneficial / Nice to have skills and experience:

• Experience of working in investment bank or financial services industry
• Experience of using cloud services such as AWS and distributed systems such as Kafka, Kubernetes, S3, DynamoDB, MongoDB or any other NoSQL database

What we’ll provide you:

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Java / Microservices / API design / LLMs / AI / Claude Code / Copilot

Role: Senior Software Engineer

Company: Financial Services

Location: London - Hybrid 3 days per week

Salary: up to 120,000

Join a Service Modernisation team driving AI-first software development in financial services. This is a hands-on role modernising high-impact legacy services while building AI-powered engineering workflows.

What You’ll Do

• Modernise critical legacy Java services using AI-driven analysis and refactoring
• Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs
• Ship improvements in fast cycles with measurable gains in performance and reliability
• Build AI-powered tooling, including MCP servers and AI-assisted CI/CD pipelines
• Demonstrate how AI transforms developer productivity and code quality

What We’re Looking For

• 6+ years’ backend engineering experience (Java)
• Proven experience modernising production systems at scale
• Hands-on use of AI development tools (e.g. Claude Code, GitHub Copilot, LLMs)
• Experience with MCP, AI automation, or agentic AI systems
• Strong understanding of microservices and API design

Java / Microservices / API design / LLMs / AI / Claude Code / Copilot

Contract Python Developer (Investment Banking) - Front Office/Derivatives Risk/Pricing&Risk/Server Side

Our Investment Banking client is looking to hire a Python Developer on a long term contract role (initial 12 months)

• 5+ years of strong Python development experience (optional Java) with demonstrable experience of having designed and developed complex Server Side components.
• Experience working in Financial Services specifically within markets in Front Office derivatives risk systems or pretrade/origination or post trade management systems
• Pricing and Risk knowledge - structure and pricing of derivative products
• Derivatives Risk domain knowledge (Greeks and Scenarios)

Hybrid working - inside IR35 - initial 12 month contract

By applying to this job you are sending us your CV, which may contain personal information. Please refer to our Privacy Notice to understand how we process this information. In short, in order to supply you with work finding services, we will hold and process your personal data, and only with your express permission we will share this personal data with a client (or a third party working on behalf of the client) by email or by upload to the Client/third parties vendor management system. By giving us permission to send your CV to a client, this constitutes permission to share the personal data that would be necessary to consider your application, interview you (Phone/video/face to face) and if successful hire you.

Scope AT acts as an employment agency for Permanent Recruitment and an employment business for the supply of temporary workers. By applying for this job you accept the Terms and Conditions, Data Protection Policy, Privacy Notice and Disclaimers which can be found at our website.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech .

Join the Technology Application Strategy team, where we empower Citi’s global developer community to build better, faster, and with greater satisfaction. We are a dynamic and globally distributed team of passionate technologists across London, Belfast, and the US, dedicated to designing, building, and deploying cutting-edge productivity and tooling solutions.

Our mission is to revolutionise the developer experience at Citi, providing innovative tools and platforms that streamline workflows, enhance efficiency, and foster a culture of continuous improvement. If you thrive on solving complex problems and aspire to make a significant impact on how thousands of developers operate worldwide, you’ll find your challenge here.

Role Overview/What will you do:

• You will play a key role in developing tooling for the Citi developer community using a range of technologies including Java and SpringBoot microservices on Linux on OpenShift.
• You’ll build APIs to integrate with other systems across the bank using industry best practices.
• You will engage across the entire Software Development Lifecycle (SDLC), from initial design and architecture to development, testing, deployment, and ongoing support, ensuring the delivery of high-quality, impactful solutions.
• Act as a trusted consultant and partner to developers worldwide within Citi. You will provide expert guidance, facilitating their onboarding and maximizing their utilization of the innovative tools and platforms you help create.
• You will serve as a subject matter expert for both senior stakeholders and team members. You will role model engineering excellence and play your part in actively fostering a culture of continuous learning and openly sharing your knowledge and experience.

Key Skills and Experience

• You will be a highly motivated self-starter who is comfortable taking on new challenges with an open and inquisitive mind and a readiness to learn.
• You will be a competent Java developer who drives with tests and understands the importance of writing clean, testable code.
• You will have a strong understanding of core Java and have experience building apps using SpringBoot.
• You will have experience working with build tools such as Gradle.
• You will be comfortable working with Linux and be familiar with standard developer tooling, such as Git, BitBucket/GitHub, Jira, Confluence, etc.
• You will have a knowledge of build pipelines, CI/CD and the pathway to production.

Desirable Skills

• Working knowledge of app containerisation and deploying applications on cloud platforms (e.g. OpenShift, AWS, GCP) with Docker or Podman.
• Experience with relational databases such as Oracle.

What we’ll provide you:

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

Role Overview:
The Senior Java Full-Stack Engineer is an experienced, individual contributor position responsible for designing, developing, and implementing high-quality, end-to-end application systems and programs in coordination with the Technology team. The overall objective of this role is to drive application systems analysis, technical design, and programming across the full technology stack, leveraging modern technologies and AI-driven development practices.
Responsibilities:

• Actively participate in the entire software development lifecycle (SDLC), from requirements analysis and technical design to coding, testing, deployment, and maintenance of both front-end and back-end components.
• Design, develop, and maintain resilient and scalable back-end services and APIs using Java and a microservice-based architecture.
• Design, develop, and implement intuitive and responsive user interfaces with a strong focus on front-end technologies like React or Angular.
• Integrate AI-powered development tools (such as GitHub Copilot, Devin, or similar) into the software development lifecycle (SDLC) to enhance productivity, code quality, and innovation.
• Champion and enforce high standards for code quality, performance, and security through strong code review practices across the full stack.
• Review and analyze proposed technical solutions for projects, providing expert guidance on architecture and design for distributed systems.
• Contribute to the formulation of technical strategy and roadmaps for application development.
• Develop a comprehensive understanding of how different business areas integrate to accomplish firm-wide goals.
• Provide evaluative judgment based on the analysis of factual data in complex and unique situations, ensuring solutions are well-engineered and sound.
• Drive the delivery of end results on projects, ensuring high standards of quality and adherence to timelines.
• Ensure essential procedures are followed and contribute to defining and improving coding standards, design patterns, and development practices.
• Mentor junior engineers and lead by example in technical excellence and collaboration.
• Appropriately assess risk when making technical decisions, demonstrating particular consideration for the firm’s reputation and safeguarding Citigroup, its clients, and assets by driving compliance with applicable laws, rules, and regulations.

Qualifications:

• Proven Track Record: Extensive (6-10 years) and progressive hands-on experience in software engineering, with a demonstrated history of technical growth and tackling increasingly complex challenges in a full-stack capacity.
• Enterprise-Scale Experience: Verifiable experience in designing, building, and maintaining large-scale, distributed, and mission-critical applications. This includes a deep understanding of scalability, high availability, security, and observability.
• Full-Lifecycle Proficiency: Comprehensive experience across the entire software development lifecycle (SDLC), including requirements gathering, architectural design, implementation, testing strategies, and deployment pipelines.
• Essential: Strong proficiency in back-end development with Java, including experience with frameworks like Spring Boot.
• Essential: Proven experience designing, building, and operating applications based on a microservice architecture.
• Essential: Strong proficiency in front-end development with modern frameworks, specifically React or Angular.
• Essential: Demonstrated experience utilizing AI-powered development tools (e.g., GitHub Copilot) within the software development lifecycle.
• Essential: Deep understanding of strong engineering fundamentals, including data structures, algorithms, design patterns, and best practices.
• Nice to Have: Experience with data stores such as MongoDB or Elasticsearch.
• Nice to Have: Experience with Next.JS.
• Nice to Have: Familiarity with Specification-Driven Development methodologies.
• Technical Ownership: A strong sense of ownership and accountability, with a proven ability to drive technical projects to completion in a fast-paced, agile environment.
• Experience in the Financial Services industry is a plus.
• Excellent problem-solving skills and the ability to work with complex and ambiguous requirements.
• Consistently demonstrates clear and concise written and verbal communication.

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

£40000 - 60000 GBP

Hybrid WORKING

Location: Central London, Greater London - United Kingdom Type: Permanent

Site Reliability Engineer

Level: Mid-Senior

Location: Gloucester (Hybrid)

Function: Site Reliability Engineering / DevOps

Salary £40,000 - £65,000 (DOE) + bonus and benefits

About the Role

Our client operates at the sharp end of national security and digital intelligence, delivering mission-critical technology across highly sensitive environments. Their Gloucester-based team is scaling, driven by increasing demand from government and defence clients.

This is a Site Reliability Engineering role with real impact. You are not maintaining low-value ops processes. You are engineering reliability into systems that matter, using automation, tooling, and strong software principles to reduce manual intervention and improve performance at scale.

What You’ll Be Doing

• Supporting and improving critical services that underpin mission-facing applications
• Driving automation to eliminate repetitive operational work and reduce human intervention
• Instrumenting systems with monitoring and observability tooling, using data to improve reliability and performance
• Working closely with engineering teams to embed best practices in system design and architecture
• Diagnosing and resolving complex incidents across the full technology stack
• Contributing to a broader SRE / DevOps community, sharing knowledge and improving standards

Ideal Background

• Experience in software engineering, ideally with Java and web technologies (JavaScript, HTML)
• Strong understanding of cloud infrastructure (AWS, Azure, or OpenStack)
• Solid Linux and/or Windows command line experience (Bash, PowerShell)
• Exposure to distributed systems, microservices, and containerisation (Docker)
• Experience with monitoring and logging tools (e.g. ELK stack)
• Familiarity with databases such as Elasticsearch or MongoDB
• Experience with CI/CD or configuration management tools (Chef, Puppet)
• Proven ability to troubleshoot production issues across infrastructure and application layers
• Understanding of Agile environments and tooling (e.g. Jira)

What You’ll Receive

• £40,000 - £65,000 base salary depending on experience
• Hybrid working model with flexibility built in
• Opportunity to work on high-impact, secure programmes with real-world outcomes
• Access to complex engineering challenges not typically found in commercial environments
• Strong internal engineering culture with a focus on continuous improvement and innovation

Who Should Apply

• Engineers who want to move beyond traditional operations into true SRE
• Candidates who enjoy solving complex reliability and scalability challenges
• Individuals comfortable working in secure, high-trust environments
• People who value impact, ownership, and engineering depth over surface-level delivery

Clearance & Eligibility

Due to the nature of the work, candidates must be eligible for UK security clearance. This typically requires UK nationality or long-term residency.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
The Opportunity
This is your chance to build the foundational systems for ‘Citi Assist’, a Generative AI assistant that will reach every Citi employee globally. You’ll join us on the ground floor, becoming a core builder on a high-visibility platform that sets the standard for how a global bank adopts this technology safely and at scale.

Here’s what makes this role unique: we know that data is the key to building a successful, safe, and scalable generative AI assistant. The difference between a good AI product and a great one isn’t just the model-it’s the testing, evaluation, and feedback loops that make it better every day.
As a data-focused full-stack engineer, you’ll help us craft the tools and systems that let us understand how Assist is performing, where it’s succeeding, and where it needs to improve.

You’ll work across the stack, building everything from intuitive dashboards that surface insights to robust backend pipelines that process evaluation data at scale.

What You’ll Do

Build the tools that make Assist great. You’ll design and build the testing, evaluation, and feedback systems that help us understand how our AI assistant is performing in the real world. This means creating tools for both our team and our users to provide feedback, analyse interactions, and measure quality.
Work with data across the full stack. You’ll build data pipelines that collect and process evaluation metrics, create visualisations that surface insights to the team, and design APIs that power our testing infrastructure. You’ll be equally comfortable writing SQL queries as you are building React components.
Own your features end to end. You’ll take responsibility from conception to production. That means understanding the problem we’re trying to solve, designing the right solution, building it, and measuring whether it’s working. You’ll drive your work forward with autonomy while keeping the team aligned.
Build with safety and quality in mind. For us, building safe, sound, and compliant systems is non-negotiable. You’ll help us establish the data practices and evaluation frameworks that ensure Assist meets our high standards for quality, safety, and regulatory compliance.
Set the technical direction. As a VP-level engineer, we expect you to influence how we approach problems. You’ll mentor other engineers, contribute to architectural decisions, and help establish best practices for how we work with data across the platform.
Be a great teammate. We expect you to be a leader in our engineering culture. That means offering thoughtful code reviews, unblocking your peers, sharing what you learn, and helping raise the bar for the whole team. We succeed together.

Skills & Experience

• Strong experience building and deploying production applications across the full stack
• Proficiency in multiple languages, including Python and TypeScript/JavaScript (experience with Go or Java is a plus)
• Deep experience working with data-whether that’s building data pipelines, designing analytics systems, or creating data-driven products
• Experience building user-facing features with modern frontend frameworks like React, Vue, or Angular
• Strong SQL skills and experience with relational databases like Postgres
• Experience building backend services and APIs that handle data at scale
• Comfort with containerised environments and cloud infrastructure (we use OpenShift/Kubernetes)
• Strong understanding of CI/CD pipelines, testing frameworks, and automation
• Experience with data visualisation tools and techniques

What matters most to us

A data-driven mindset. You believe that good data and rigorous evaluation are essential to building great products. You know how to instrument systems to collect the right data and how to turn that data into actionable insights.
A solutions-first approach. You find the best path to solve the problem, whether that’s building new infrastructure, leveraging existing tools, or changing how we think about the problem entirely. You’re pragmatic about trade-offs.
Technical leadership. You have strong opinions, loosely held. You can articulate your technical vision and bring others along with you, but you’re also open to being wrong and learning from your peers.
A focus on impact. You understand that our goal is to deliver value to users and make Assist better every day. You know when to move fast and when to invest in building things properly.
Clear communication and ownership. You take initiative, communicate proactively, and take responsibility for outcomes. You don’t wait for permission, but you keep stakeholders informed.
A collaborative spirit. You thrive in team environments where you can learn from others and help them grow. You see mentoring and knowledge-sharing as part of your role.

Bonus points for

• Direct experience building evaluation or testing frameworks for AI/ML systems
• Experience with LLM evaluation techniques, prompt engineering, or AI safety concepts
• Experience with data pipeline tools like Apache Airflow, Dagster, or similar
• Experience with analytics platforms, experimentation frameworks, or A/B testing infrastructure
• Background in data science, analytics engineering, or similar data-focused roles
• Contributions to open-source projects in the data or AI space
• Experience working in highly regulated environments

Our Tech Stack
We work with Python, TypeScript, Go, and Java on the backend. Our frontend is built with TypeScript, React, and Next.js. We use Postgres for our database, run everything on Kubernetes (specifically Red Hat OpenShift), and our DevOps setup includes GitHub and CI/CD tools like Tekton and Harness.

Our Team and Mission
We’re the Common Platform Engineering team for GenAI, a central group in the Chief Technology Office. We’re a focused agile team that owns our work from idea to production.

Our culture is built on a shared belief in engineering craftsmanship, backed by leadership that actually understands what that means. We’re on a journey to prove what’s possible inside a large organisation, and that means navigating some legacy while building the future. This isn’t a role for someone who wants everything to be perfect on day one. It’s for an engineer who wants to help us get there, influencing how we solve problems and raising our collective bar.

We have a dual mission. First, we’re building ‘Citi Assist’, the GenAI digital assistant for our colleagues. Second, we’re providing the platforms and guidance that enable the entire organisation to adopt GenAI safely and effectively.

This is not a typical banking job. You’ll build foundational technology that has a direct, positive impact on hundreds of thousands of people. You’ll have the executive support to tackle big problems and real autonomy to shape our solutions. Most importantly, you’ll join a passionate, collaborative team where we all learn from each other and push each other to do our best work.

What we’ll provide you
This is a unique role that will put you in the position to be part of a new venture and actively drive change. Every day there will be new challenges that will help you develop new skills that can drive your career.
By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends

Visit ourGlobal Benefitspage to learn more.
Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Java (Kotlin) Developer (Agile, Test-Driven) - VP
Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Equities Tech
Equities Technology at Citi is undertaking a bold, multi-year transformation to build a best-in-class global platform across execution, prime, clearing and cross-product margining. We are re-engineering our technology estate to achieve world-leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post-trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise. As part of the team, you’ll collaborate closely with high-calibre engineers and deeply engaged business and product partners - working together to define and deliver the next generation of Equities technology at Citi.

Prime Brokerage Tech
Prime Brokerage Technology provides solutions that underpin the operations of our clients and traders that provide the foundation of our Prime Finance business. This is an area of great opportunity and is a major growth target for Citi - with technology providing the key to unlock this potential.

Responsibilities Include (but not limited to):

• Ownership and delivery on a variety of components (Java/Kotlin) within the Core Prime Brokerage platform. Hands-on Development.
• Provide technical leadership for an agile development team, championing best practices in Continuous Integration and Continuous Deployment (CI/CD). Foster a culture of quality through developer-led automated testing initiatives. Drive continuous improvement in SDLC, agile and DevOps processes using key performance indicators, including DORA metrics, to enhance team efficiency and software delivery.
• Lead design, planning and estimation discussions within the team and with partners from across the department along with business stakeholders.
• Conduct high-level system analysis and architecture design, ensuring alignment with business requirements, technical standards and the overall architecture blueprint.
• Facilitate requirement gathering and translate complex business needs into technical specifications.
• Oversee the creation and maintenance of project and technical documentation.
• Identify and mitigate risks throughout the SDLC, proposing solutions to complex problems.
• Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation.
• Oversee production support processes, collaborating with operations and business stakeholders. Analyze issue patterns to drive improvements. Guide documentation efforts, maintain on-call rotations and lead post-mortems. Lead efforts to resolve root-causes and enhance performance, scalability, and reliability.
• Provide technical leadership and serve as advisor or coach to mid-level developers, analysts and grads.

Technical Experience:

• Java & Test-Driven Development are essential.
• Experience in any number of additional technologies (listed below) is advantageous:
  • Kotlin
  • Cloud Technologies (Kubernetes, Open Shift)
  • Messaging Technologies (Kafka, Solace, TIBCO)
  • Database / Data Store / Data Query Technologies (SQL Server, Trino, Mongo, S3)
  • Observability Technologies (OpenTelemetry, Elastic Stack / ELK, Grafana)

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

What we’ll provide you
By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit our About Us | Culture, Values & Benefits page to learn more.
Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Junior Data Engineer - Public Sector Contract: Initial 7 months (extension possible) Rate: £310 per day, Inside IR35 Location: Remote with travel to Waterloo (2-3 days per month) Security Clearance: SC‑eligible (5 years UK residency required) I am working with a key consultancy delivering a major UK public sector programme and are looking for a Junior Data Engineer / Scientist to join a mixed delivery team building and operating secure, reliable data platforms that support critical public services.This role is designed for someone early in their data career who wants to develop strong engineering fundamentals in a real production environment. The role - a junior, generalist data engineering position. This is an engineering‑led role, not a specialist or senior position. The team is ideally looking for a generalist in their first few years within data engineering or data science, who is building breadth across data platforms, pipelines and operations. You'll focus on: Designing, building and maintaining data pipelines Supporting the operation of data lakes and data warehouses Implementing and improving ETL / ELT processes Using Python and SQL to transform, validate and move data Working with analysts and developers to turn data requirements into technical solutions Monitoring data quality, documenting data models and lineage, and resolving issues Automating data workflows and operational tasks Participating in Agile delivery, sprint work and collaboration Supporting incidents and helping improve platform reliability over time Working within public sector data governance, security and privacy standardsThis role offers exposure to how data platforms are built, operated and supported in a regulated environment - forming the foundations of a long‑term data engineering career. What this role is not To avoid misalignment, it's important to be clear about what this role is not focused on: ❌ Not a Data Analyst role ❌ Not a Power BI / dashboard developer role ❌ Not an insight, reporting or MI position ❌ Not a modelling, ML or research‑focused role ❌ Not an LLM, AI or advanced data science roleWhile you may work alongside analysts and data scientists, this role does not centre on: Building dashboards Producing insights or reports Statistical modelling Predictive or machine learning solutionsThe emphasis is on data engineering foundations and platform delivery. Ideal candidate profile This role is best suited to someone who: Is in their first few years of a data engineering or data science career Wants to build core engineering skills rather than specialise immediately Has hands‑on experience with SQL and Python Understands basic data modelling and ETL concepts Is comfortable learning through delivery in a production environment Is interested in how data platforms work end‑to‑end, including operations and support Is keen to grow within public sector data platforms Who this role is unlikely to suit This role is unlikely to be appropriate for candidates who: Are very senior data engineers or architects Have primarily worked in advanced ML, AI, or research‑focused roles Are specialised Power BI, reporting or MI developers Are looking for a role centred on analysis, insights or modelling Are seeking leadership, ownership of platform strategy, or advanced optimisation workApplications that demonstrate significant seniority or deep specialisation rather than junior‑to‑mid generalist experience may not be progressed. Required skills and experience Your CV should clearly demonstrate: A degree in a technical discipline (Computer Science, Data Science, Mathematics or similar) Hands‑on experience with SQL Experience using Python, Java or Bash Understanding of ETL processes and data modelling fundamentals Experience with version control (e.g. Git) Comfort working in Agile / DevOps environments Awareness of data security and privacy Eligibility for UK SC clearance Nice to have (but not essential) Exposure to AWS, Azure or GCP Familiarity with tools such as Airflow, dbt, Spark Awareness of CI/CD pipelines or containerisation Experience in public sector or regulated environments Important note for applicants This role is deliberately positioned as a junior, generalist data engineering role. Please ensure your CV clearly demonstrates hands‑on data engineering fundamentals, rather than senior leadership, advanced AI/ML work, or analytics‑only experience. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)

A boutique multi‑strategy investment firm is building a next‑generation real‑time data platform to support systematic and discretionary trading across multiple asset classes. They are hiring a VP‑level Market Data Engineer to take ownership of high‑performance data ingestion and live feed architecture. This is a hands‑on technical leadership role for someone who enjoys working close to the data, at scale, in a low‑latency environment. You will lead the engineering of real-time market data feeds, ingesting millions of messages per second and handling terabytes to petabytes of data from live sources. This platform underpins trading, analytics and research with a strong focus on low-latency, high-throughput and resilience. You'll work closely with trading, quant and platform teams to design and evolve a highly optimised market data stack. Areas Of Focus: 1. Real-time market data ingestion and processing at scale. 2. Low-latency Java systems (event-driven, high-throughput). 3. Bloomberg, TREP, Refinitiv etc feed integration. 4. Direct venue connectivity and market data normalisation. 5. Handling TB-PB scale datasets from continuous live feeds. 6. Data quality, sequencing, recovery and resiliency in real-time systems. What They're Looking For: 1. Strong hands-on background in Java building low-latency, high performance systems. 2. Experience in hedge fund, prop trading, or investment banking environments. 3. Deep expertise with market data feeds (Bloomberg, TREP, direct exchange feeds). 4. Proven experience processing millions of events per second in real time. 5. Solid understanding of data ingestion pipelines, streaming architectures, and fault tolerance. 6. Technical ownership, architecture and mentoring. Nice To Have: 1. KDB / Time Series Database 2. Python 3. Cloud/hybrid infrastructure exposure.

Our Investment Banking client is looking for an Algo trading Java developer to join the team to work on new initiatives and support for business critical algorithmic trading engines. The team provides innovative solutions for low touch, low latency trading, which includes FIX connectivity, low latency market connectivity, smart order routing, algorithmic trading and internal crossing.

The requirement is for a core Java developer. The team is working on a number of algorithmic engines that support benchmark algos, smart order routing and internal crossing.

The main responsibilities of this role include:

• Delivery of key functional changes to the ETT strategy engines
• Delivery of core framework-level changes
• Interaction with quantitative trading group/quantitative traders to capture core requirements
• In depth understanding of core Java API’s (collections, concurrency, NIO etc.)
• Have an understanding of and experience with multithreaded systems, working knowledge of the Java garbage collector, familiar with low latency I/O.
• Understanding of and experience with design patterns (Observer, Factory, Singleton etc.)
• Development practices - Must be able to use test driven development and be familiar with UML and OO design.
• Understanding of benchmark algo and/or smart routing strategies (VWAP, TWAP, Arrival Price etc.)
• Demonstrable experience of Front Office system design and architecture (algo trading plant and topology)
• Business Knowledge - Understanding of equities and/or derivatives markets.
• Knowledge of FIX (heartbeating, login, sequence numbers, message types etc.)

Initial 12 month contract, hybrid working, inside IR35 role

By applying to this job you are sending us your CV, which may contain personal information. Please refer to our Privacy Notice to understand how we process this information. In short, in order to supply you with work finding services, we will hold and process your personal data, and only with your express permission we will share this personal data with a client (or a third party working on behalf of the client) by email or by upload to the Client/third parties vendor management system. By giving us permission to send your CV to a client, this constitutes permission to share the personal data that would be necessary to consider your application, interview you (Phone/video/face to face) and if successful hire you.

Scope AT acts as an employment agency for Permanent Recruitment and an employment business for the supply of temporary workers. By applying for this job you accept the Terms and Conditions, Data Protection Policy, Privacy Notice and Disclaimers which can be found at our website.

About Us:

About Us: Solirius Reply delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses in order to provide a bespoke service, allowing us to truly understand our clients’ needs.

It is this close collaboration with our clients that has enabled us to grow rapidly in recent years and will drive our ambitious future growth plans. We currently have over 400 consultants working with a variety of key clients from both the public and private sectors such as the Ministry of Justice, Department for Education, FCDOS, UEFA, International Olympic Committee and Mercedes Benz; with plans to increase our client base further in the near future.

We operate as a flat organisation and believe in trusting and supporting our team to operate independently. We pride ourselves on being specialists at what we do, making the most of our consultants’ expertise in their fields, to provide a best-in-class service to our clients. All our consultants have the opportunity to work on a range of different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose

About You:

You are a motivated and adaptable professional with a strong analytical mindset and a passion for using technology to solve real-world problems. You enjoy working in collaborative, agile teams and take pride in delivering high-quality solutions that make a tangible impact. With strong communication skills and a consultative approach, you’re comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. You understand and align with Solirius Reply Values.

The Role:

We are looking for experienced Solution Architects to work on our projects with our public sector clients, helping to deliver Solirius’ services to the highest standard.

The role will involve working with multiple business stakeholders, helping them to design business solutions which will then be implemented by the delivery teams.

As a Solution Architect, you will be expected to operate with a high degree of autonomy, using your experience and judgement to resolve complex technical and architectural challenges in alignment with client needs. You will proactively manage escalations and take ownership of delivering effective, scalable, and secure solutions.

Successful candidates will also be expected to take an active role in practice development: developing new services to help with Solirius’ business development - creating and updating new architecture artefacts, liaising with the other Solirius practices to maintain practice profile and contributing to the development of more junior practice members.

In addition to technical leadership, you will play a key role in identifying and shaping new business opportunities, working closely with stakeholders across client organisations to understand strategic objectives and deliver value-driven outcomes.

You must be a strong and confident communicator, capable of influencing both technical and non-technical audiences. You will lead and mentor technical teams, build consensus across diverse stakeholder groups, and foster collaborative, cross-functional working environments.

Your role will require innovative thinking, applying best practices and emerging technologies to solve complex business problems in creative and pragmatic ways.

Key Responsibilities:

• Design end-to-end solution architectures that meet business, technical, and security requirements.
• Translate business and technical requirements into scalable, secure, and cost-effective designs.
• Ensure alignment with enterprise architecture, technology strategy, and governance standards.
• Lead architecture reviews and technical design workshops with stakeholders and delivery teams.
• Support Agile delivery teams, defining MVP architecture and providing ongoing technical direction.
• Collaborate with stakeholders across business, product, and IT to gain buy-in and drive decisions.
• Define integration patterns, APIs, and data flows between systems and services.
• Contribute to DevOps, automation, and infrastructure-as-code practices for delivery at scale.
• Ensure security, compliance, and risk management are Embedded in the solution.
• Produce clear architectural documentation using standards like C4, Archimate, or cloud-native diagrams. Creating high-level Level Designs and relevant architecture artifacts.

Key Experience:

• Extensive experience in stakeholder engagement and senior-level communication, including C-suite.
• Proven experience in client-facing and/or consultancy environments.
• Demonstrated ability to translate complex business and functional requirements into scalable and resilient technology architectures.
• Strong track record in designing and delivering end-to-end data and application architectures in enterprise settings.
• Expertise in conceptual, logical, and physical architecture modelling.
• Deep understanding of large-scale, distributed systems and integration patterns.
• Ability to design solutions that meet both functional and non-functional requirements, including performance, scalability, security, and compliance.
• Broad experience with system security, operating systems, cloud infrastructure, and enterprise data management.

Key Skills:

• Advanced knowledge of cloud platforms: Microsoft 365, Azure, AWS, and Google Cloud Platform (GCP).
• Hands-on experience with programming languages such as Java, .NET, Python, or equivalent.
• Microservices architecture and containerization.
• RESTful API design and management.
• Agile and DevOps delivery methodologies.
• Expertise in data architecture and design (conceptual, logical, and physical).
• Familiarity with modern integration technologies and patterns (eg, event-driven, service mesh, API gateways).

What We Offer:

• Competitive salary
• 25 Days Annual Leave + Bank Holidays
• Flexibility to work from home
• 10 days allocated development training per year
• Generous discretionary bonus
• Statutory & Contributory pension
• Private healthcare cover
• Discounted gym membership
• Enhanced parental leave
• Paid fertility leave
• Cycle to Work and Electric Vehicle schemes
• Access to Employee Assistance Programme (EAP)
• Annual away days
• Monthly company socials

Equality & Diversity

Solirius Reply is an equal opportunities employer. We are committed to creating a work environment that supports, celebrates, encourages and respects all individuals and in which all processes are based on merit, competence and business needs. We do not discriminate on the basis of race, religion, gender, sexuality, age, disability, ethnicity, marital status or any other protected characteristics.

Should you require further assistance or require any reasonable adjustments be put in place to better support your application process, please do not hesitate to raise this with us

About Us:

Solirius Reply delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses in order to provide a bespoke service, allowing us to truly understand our clients’ needs.

It is this close collaboration with our clients that has enabled us to grow rapidly in recent years and will drive our ambitious future growth plans. We currently have over 400 consultants working with a variety of key clients from both the public and private sectors such as the Ministry of Justice, Department for Education, FCDOS, UEFA, International Olympic Committee and Mercedes Benz; with plans to increase our client base further in the near future.

We operate as a flat organisation and believe in trusting and supporting our team to operate independently. We pride ourselves on being specialists at what we do, making the most of our consultants’ expertise in their fields, to provide a best-in-class service to our clients. All our consultants have the opportunity to work on a range of different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose.

About You:

You are a motivated and adaptable professional with a strong analytical mindset and a passion for working with data to solve real-world problems. You enjoy working in collaborative, agile teams and take pride in delivering high-quality, data-driven solutions that make a tangible impact. With strong communication skills and a consultative approach, you’re comfortable engaging with clients, understanding their needs, and translating them into robust data architectures and platforms. You understand and align with Solirius Reply Values.

The Role:

We are looking for experienced Data Architects to work on our projects with our public sector clients, helping to deliver Solirius’ services to the highest standard.

The role will involve working with multiple business and technical stakeholders, helping them to design data solutions and architectures which will then be implemented by the delivery teams.

As a Data Architect, you will be expected to operate with a high degree of autonomy, using your experience and judgement to resolve complex data and architectural challenges in alignment with client needs. You will proactively manage escalations and take ownership of delivering effective, scalable, and secure data solutions.

Successful candidates will also be expected to take an active role in practice development: developing new data services to help with Solirius’ business development - creating and updating data architecture artefacts, liaising with other Solirius practices to maintain practice profile and contributing to the development of more junior practice members.

In addition to technical leadership, you will play a key role in identifying and shaping new business opportunities, working closely with stakeholders across client organisations to understand strategic objectives and deliver value-driven, data-led outcomes.

You must be a strong and confident communicator, capable of influencing both technical and non-technical audiences. You will lead and mentor technical teams, build consensus across diverse stakeholder groups, and foster collaborative, cross-functional working environments.

Your role will require innovative thinking, applying best practices and emerging data technologies to solve complex business problems in creative and pragmatic ways.

Key Responsibilities:

• Design end-to-end data architectures that meet business, technical, and security requirements.
• Translate business and analytical requirements into scalable, secure, and cost-effective data platforms.
• Ensure alignment with enterprise data architecture, data strategy, and governance standards.
• Lead data architecture reviews and technical design workshops with stakeholders and delivery teams.
• Support Agile delivery teams, defining MVP data architecture and providing ongoing technical direction.
• Collaborate with stakeholders across business, product, and IT to gain buy-in and drive data-driven decisions.
• Define data models, data flows, metadata standards, and integration patterns.
• Contribute to data engineering, automation, and infrastructure-as-code practices for delivery at scale.
• Ensure data security, privacy, compliance, and risk management are Embedded in the solution.
• Produce clear data architecture documentation using standards such as conceptual, logical and physical models, C4, Archimate, and cloud-native diagrams, including high-level designs and relevant data artefacts.

Key Experience:

• Extensive experience in stakeholder engagement and senior-level communication, including C-suite.
• Proven experience in client-facing and/or consultancy environments.
• Demonstrated ability to translate complex business and analytical requirements into scalable and resilient data architectures.
• Strong track record in designing and delivering end-to-end data platforms in enterprise settings.
• Expertise in conceptual, logical, and physical data modelling.
• Deep understanding of data platforms, data integration, and analytics architectures.
• Ability to design solutions that meet both functional and non-functional requirements, including performance, scalability, security, and compliance.
• Broad experience with data governance, data quality, master data management, and regulatory requirements.

Key Skills:

• Advanced knowledge of cloud data platforms: Azure, AWS, and Google Cloud Platform (GCP).
• Strong experience with data warehousing, data lakes, and lakehouse architectures.
• Hands-on experience with SQL and at least one programming language such as Python, Scala, or Java.
• ETL/ELT design and data pipeline orchestration.
• Streaming and event-driven data architectures.
• Agile and DevOps delivery methodologies applied to data platforms (DataOps).
• Expertise in data architecture and modelling (conceptual, logical, and physical).
• Familiarity with modern integration technologies and patterns (eg, API-driven, event streaming, service mesh).

What We Offer:

• Competitive Salary
• 25 Days Annual Leave + Bank Holidays
• Flexibility to work from home
• 10 days allocated for development training per year
• Generous Discretionary Bonus
• Statutory & Contributory Pension
• Private Healthcare Cover
• Discounted Gym Membership
• Enhanced Parental Leave
• Paid Fertility Leave
• Cycle to Work and Electric Vehicle schemes
• Access to Employee Assistance Programme (EAP)
• Annual Away Days
• Monthly Company Socials

Equality & Diversity:

Solirius Reply is an equal opportunity employer. We are committed to creating a work environment that supports, celebrates, encourages and respects all individuals and in which all processes are based on merit, competence and business needs. We do not discriminate on the basis of race, religion, gender, sexuality, age, disability, ethnicity, marital status or any other protected characteristics.

Should you require further assistance or require any reasonable adjustments be put in place to better support your application process, please do not hesitate to raise this with us.

GCP Data Engineer (BigQuery / Dataflow)Salary: Up to £85,000 + Bonus + BenefitsLocation: London - Hybrid (3 days per week onsite)Working Hours: 40 hours per week - Full timeJob Type: Permanent

A globally established organisation is seeking an experienced GCP Data Engineer to help build modern, scalable cloud data platforms within a complex enterprise environment.

This GCP Data Engineer role will focus on designing data architectures on Google Cloud Platform, building high-performance pipelines, and enabling reliable, secure and governed data solutions that support business growth and decision-making.

Responsibilities for the GCP Data Engineer:

• Design and build scalable data pipelines, ETL/ELT workflows and cloud data architectures on GCP
• Develop solutions using services such as BigQuery, Dataflow, Spanner and Cloud Storage
• Build and maintain code using Python, Java or Scala for data transformation and processing
• Optimise data pipelines, queries and workloads for performance and scalability
• Implement data quality, validation and governance controls
• Collaborate with cross-functional teams to deliver end-to-end data solutions
• Ensure alignment with security, privacy and compliance standards
• Troubleshoot issues across pipelines and processing workflows
• Maintain documentation across data flows, platforms and architectures

Essential Skills for the GCP Data Engineer:

• Strong experience as a Data Engineer within GCP environments
• Hands-on experience with BigQuery, Dataflow and Spanner
• Strong programming capability in Python, Java or Scala
• Experience with Apache Beam / Dataflow and distributed processing frameworks
• Experience designing and managing ETL / ELT pipelines
• Solid understanding of data modelling and database design
• Experience with workflow orchestration tools such as Apache Airflow
• Strong understanding of data governance, security and scalability

Desirable Skills for the GCP Data Engineer:

• Experience with Pub/Sub, Cloud Composer or Cloud Data Fusion
• Exposure to CI/CD, DevOps and Infrastructure as Code
• Experience with real-time streaming architectures
• Knowledge of modern data governance frameworks

If you are an experienced GCP Data Engineer looking to build enterprise-scale data platforms using modern Google Cloud technologies, this role offers strong exposure to complex delivery and cloud transformation.

GCP, Data Engineer, GCP Data Engineer

£75000 GBP

Hybrid WORKING

Location: Central London, Greater London - United Kingdom Type: Permanent

Senior Cyber Operations Analyst

Location: London (hybrid)

Salary: Up to £75,000 + on-call compensation

We are seeking an accomplished Senior Cyber Operations Analyst to join a high-performing Blue Team operating at the forefront of modern security operations. This is a technical role suited to an experienced analyst with strong engineering instincts, hands-on coding capabilities, and a deep understanding of incident response, detection engineering, and adversary tradecraft.

This position includes approximately one week per month of on-call availability for high-priority incident response. Additional compensation is provided, and frequency may vary by client.

We are looking for a senior analyst who brings curiosity, technical depth, and a proactive mindset. This role is ideal for someone who has likely grown from an engineering background and can write scripts (Python, Bash) to automate, enhance, and refine detection and response workflows. Experience with Splunk, SIEM operations, cloud endpoints, networks, and detection engineering will be highly advantageous.

NOTE: Candidates for this role must be eligible for UK SC Clearance.

Key Responsibilities

• Develop, maintain, and optimise detection content (primarily within Splunk SIEM) to identify threats across cloud, endpoint, and network environments.
• Collaborate across security functions to identify gaps in logging, alerting, and detection coverage aligned to business risk.
• Improve SecOps processes by recommending enhanced logging, identifying trends, and driving operational optimisation.
• Conduct security monitoring, alert triage, and continuous improvement of detection rules (core hours 9:00-17:30 on rotation).
• Lead and support incident response investigations, ensuring high-quality documentation and escalation.
• Mentor and support junior analysts, providing guidance, coaching, and technical oversight.
• Serve as a technical SME on client engagements; present findings and recommendations to senior stakeholders.
• Participate in alert testing, readiness exercises, and incident response tabletop sessions.
• Stay current on emerging threat intelligence, attacker techniques, and relevant research.

Required Experience & Attributes

• 3+ years experience as a Cyber Security Operations Analyst
• Familiarity with threat intelligence frameworks and methodologies
• Detection engineering and alert development expertise.
• Strong scripting or programming skills (Python, Bash, C/C++, Java).
• Solid grounding in cybersecurity fundamentals: network security, cloud security, cryptography, forensics.
• Understanding of common network protocols and attacker abuse patterns.
• Awareness of current APT groups and their TTPs.
• Knowledge of analysis techniques for Windows and/or Linux environments.

If you are a technically driven senior analyst ready to advance a modern Blue Team capability, apply today.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Technical Lead in EMEA for Trading (Securities Lending) - SVP

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Equities Tech
Equities Technology at Citi is undertaking a bold, multi-year transformation to build a best-in-class global platform across execution, prime, clearing and cross-product margining. We are re-engineering our technology estate to achieve world-leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post-trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise. As part of the team, you’ll collaborate closely with high-calibre engineers and deeply engaged business and product partners - working together to define and deliver the next generation of Equities technology at Citi.

What We do / The Team

The Equity Finance Technology team are seeking a technical lead position as a highly skilled engineer for the Trading platform, located in London. This role requires strong expertise in Java, messaging frameworks, caching and low latency systems to build business solutions through agile delivery. The successful candidate will be required to lead a team of developers locally to execute on an aggressive business agenda.

Responsibilities:

• Develop platform vision and strategy to support Prime Growth, working closely with the global technology leads.
• Deliver on an aggressive agenda whilst providing technical oversight of a team of developers locally
• Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
• Ensure change is managed with appropriate controls, documentation, and approvals including implementation of new and revised regulatory reporting requirements
• Solve the highest-impact, highest-profile problems with significant business impact through in-depth evaluation of complex business processes, system processes and industry standards
• Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
• Utilise advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
• Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
• Contribute to technical direction and strategic decisions as a technical expert in all development and implementation phases, providing in-depth and sophisticated analyses to define problems and develop innovative solutions
• Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
• Serve as adviser or coach to mid-level developers and analysts, allocating work as necessary
• Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm’s reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgement regarding personal behaviour, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Key Skills and Experience required

• Extensive relevant experience in Applications Development and previous leadership of developers
• Awareness of building event based systems with low latency trading requirements
• Experience in Equity Finance / Securities Lending
• Comprehensive experience with all phases of Software Development Life Cycle, including Agile delivery
• Demonstrated ability to work under pressure managing multiple activities and changing priorities
• Proven interpersonal, management and prioritization skills
• Ability to adjust priorities quickly as circumstances dictate
• Excellent interpersonal and communication skills with the ability to manage stakeholder expectations
• Flexibility to work with a global team, across geographies and time zones

Technical Skills

• Technical skills in Java, Kafka, Distributed Caching, SQL, Git
• Experience in performing QA, TDD and BDD practices
• Experience with building containerised solutions that horizontally scale
• Exposure to AI solutions to accelerate development
• Proven ability to work in high pressure environment
• Strong problem-solving skills and ability to think strategically

Any Beneficial / Nice to have skills and experience:

• React and full stack development
• Knowledge of Prime Services is a plus

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

What we’ll provide you
By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit our About Us | Culture, Values & Benefits page to learn more.
Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.