AWS Jobs in London

£45,000 - £65,000 per annum GBP
Performance bonus, 28 days leave + bank holidays, Private Medical Insurance
Hybrid WORKING
Location: Central London, Greater London - United Kingdom Type: Permanent

Role: IAM Consultant

Location: London, Edinburgh or Glasgow (Hybrid)

Salary: £45,000 - £65,000 per annum + benefits

Clearance: Eligibility to undergo SC Clearance with the UK Government.

A market-leading global professional services firm is seeking an Identity and Access Management (IAM) Consultant to join their specialist security practice. Reporting into senior leadership, you will design and deliver comprehensive IAM architectures for complex client environments, focusing on identity governance, access control, and compliance.

About the Organisation

This organisation operates at the forefront of strategy, consulting, technology, and operations, applying deep industry expertise and innovative digital solutions to major business challenges. Renowned for thought leadership, inclusion, and a culture centred on stewardship, client value, and integrity, they support high-impact projects across public and private sectors. Teams collaborate globally to drive strategic security transformations.

Responsibilities

Design and implement identity and access governance (IAG) strategies, including architecture for identity management, authentication, and authorisation aligned to business and regulatory needs.
Lead development of IAG solutions such as RBAC, ABAC, privilege management, user provisioning workflows, and integrations with IT infrastructure.
Manage compliance and risk, including GDPR/SOX adherence, risk assessments, audit trails, and reporting for identity activities.
Collaborate with security, IT, and business stakeholders to gather requirements, provide technical leadership, and communicate solutions effectively.

Candidate Profile

Degree in Computer Science, IT, Cybersecurity or equivalent; certifications like CISSP, CISM, TOGAF advantageous.
Experience in IAM/security architecture, with hands-on design and implementation of IAG solutions in large-scale settings.
Expertise in IGA tools (e.g., SailPoint, Okta, Oracle Identity Governance), access models, federation, SSO, MFA, protocols (SAML, OAuth, OpenID Connect, LDAP), and cloud IAM (Azure AD, AWS IAM).
Strong analytical skills, cross-functional leadership, and ability to explain complex concepts to non-technical audiences. SC clearance eligible.

Benefits

Competitive package includes 25 days holiday, private medical insurance, and 3 extra days for charity work. Hybrid model with flexibility; mobility required for client sites.

How to Apply

If you are a IAM specialist looking for a consulting role with breadth, accountability and visible client impact, please apply with your CV. Given the clearance requirement, candidates must be SC clearable and able to provide the required UK address history.

Reference: AMC/JWH/ACLE1

#jawh

IP Network Architect

Flint UK Technology Services

Role Title: IP Network Architect
Location: Reading/Hybrid

Role Overview

The IP Design Specialist (Architect) plays a pivotal role in shaping the future of network design and strategy across a diverse portfolio of technologies including IP/MPLS networks, hybrid cloud platforms, and next-gen mobile infrastructure. This senior technical leader is responsible for high-level architectural direction, cross-domain integration, and setting design standards that support critical transformation and growth initiatives across the organisation.

Key Responsibilities

Lead strategic IP network architecture efforts across LAN/WAN, MPLS core, cloud networking, and virtualized network functions (VNF/CNF).
Develop and govern HLDs (High-Level Designs) ensuring alignment with enterprise architecture and business objectives.
Collaborate with CTO, Product, and Infrastructure teams to define architectural blueprints and long-term roadmaps.
Act as SME for critical technologies such as SDN, NFV, service chaining, and Cloud-native networking.
Guide and mentor designers and engineers in complex solution development and design best practices.
Define and enforce network design standards, patterns, and reusable components across the enterprise.
Evaluate emerging technologies and vendor solutions, supporting innovation and network evolution.
Lead cross-functional design assurance and technical steering groups.

Essential Skills & Qualifications

Senior-level expertise in service provider routing, large-scale MPLS, BGP, multitenant network design.
Strong experience architecting both traditional infrastructure and cloud-based (OpenStack, AWS, Azure) networking.
In-depth knowledge of modern network architectures, including microservices, API-driven platforms, and DevOps integration.
Experience in enterprise security and network segmentation best practices.
Familiarity with network automation and orchestration: Ansible, Python, Netconf/YANG, REST APIs.
Excellent strategic thinking, documentation, and stakeholder communication skills.

Desirable Certifications

CCIE/JNCIE/SRA or equivalent level of demonstrable experience.
TOGAF, AWS Solution Architect, or equivalent enterprise architecture certification is advantageous

AWS Solution Architect - Associate Manager

££70,000 - £78,000 GBP
Hybrid WORKING
Location: Central London, Greater London - United Kingdom Type: Permanent

AWS Solution Architect

Location: London (Hybrid)

Salary: Up to £78,000 + bonus + package

Clearance: Must be eligible for BPSS & SC (5 years UK residency required, sole UK nationality)

Company Overview
We’re supporting a leading global professional services organisation renowned for delivering large-scale digital, cloud, and transformation programmes across both public and private sectors.

The business combines deep industry expertise with cutting-edge technology to help clients modernise platforms, unlock data value, and deliver innovative, cloud-first solutions. With a strong culture of inclusion, continuous learning, and career development, they offer the opportunity to work on high-impact projects within a truly global network.

Role Overview
This is an exciting opportunity for an AWS Solution Architect to join a high-performing cloud team, working on complex, enterprise-scale transformation programmes.

You’ll play a key role in designing and delivering scalable, secure, and high-performing cloud solutions, with a particular focus on enabling modern applications and AI-driven workloads. The role spans the full lifecycle - from architecture and design through to implementation - working closely with cross-functional teams including developers, data scientists, and engineers.

You’ll act as both a technical leader and trusted advisor, helping clients maximise the value of cloud technologies while remaining hands-on in delivery.

Key Responsibilities

Designing and implementing scalable, secure, and high-performing AWS cloud solutions
Architecting and supporting cloud-native applications and modern infrastructure
Leading end-to-end cloud migration programmes from legacy environments
Optimising cloud cost, performance, and scalability (including GPU and serverless workloads)
Developing and maintaining cloud architecture standards, frameworks, and best practices
Implementing robust cloud security controls and ensuring compliance with industry standards
Collaborating with engineering, DevOps, and data teams to deploy applications and ML pipelines
Providing technical leadership and guidance across cloud-related initiatives
Evaluating and recommending new cloud services and capabilities

What They’re Looking For
Essential:

5+ years’ experience designing and delivering cloud solutions (AWS preferred)
Strong knowledge of core AWS services (EC2, S3, RDS, Lambda, API Gateway, VPC, IAM, Route 53)
Experience with Infrastructure as Code (Terraform or CloudFormation)
Proven experience leading cloud migration strategies and implementations
Strong understanding of cloud security and compliance frameworks (e.g. CIS, SOC2)
Experience with DevOps tooling (e.g. Git, Jenkins, Docker, Kubernetes)
Ability to work in fast-paced, client-facing environments

Desirable:

Multi-cloud experience (AWS, Azure, GCP)
Experience with hybrid cloud/on-prem integration
Exposure to AI/ML workloads and data-driven platforms
Background in large-scale consulting or transformation programmes

What’s on Offer

Competitive salary and performance-based bonus
Private medical insurance and generous pension
25 days annual leave + additional benefits
Access to industry-leading training and certifications
Opportunity to work on cutting-edge cloud and AI programmes
Clear career progression within a global organisation

Reference: AMC/TRO/AMC

Postcode: E1

#thro

Backend Java Engineer

Alexander Mann Solutions - Contingency

AMS is a global workforce solutions partner committed to creating inclusive, dynamic, and future-ready workplaces. We help organisations adapt, grow, and thrive in an ever-evolving world by building, shaping, and optimising diverse talent strategies.
Our Contingent Workforce Solutions (CWS) is one of our service offerings. Acting as an extension of their recruitment teams, we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed.

Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking.

On behalf of this organisation, AMS are looking for a Backend Java Engineer for a 6 month contract based in London (2 days per week) with remote working available (hybrid).

Purpose of the role:

Join one of the core cross functional mission teams to build and develop technology products.

What you’ll do:

Develop clean, elegant, and reusable code that is well tested and easy to maintain and extend.
Work with stakeholders across the business to drive the direction of the clients engineering and put the long-term interests of customers at the heart of key decisions.
Work collaboratively with the team to resolve technical issues.
Support and oversee junior engineers and act as a subject matter expert.

The skills you’ll need:

Solid practical and theoretical knowledge of Java software development.
Strong experience of Spring Boot / Micronaut.
An understanding of Kubernetes / Docker.
Excellent understanding of AWS (deployment / configuration)
Message-driven architectures / Kafka / event sourcing.
Experience working on a highly secure Application Success delivering within an agile environment.
Ability to act as a subject matter expert and communicate with clarity and empathy to both technical and non-technical audiences.
Understanding how to translate business objectives into data driven insights.

Next steps This client will only accept workers operating via an Umbrella or PAYE engagement model. If you are interested in applying for this position and meet the criteria outlined above, please click the link to apply and we will contact you with an update in due course. AMS, a Recruitment Process Outsourcing Company, may in the delivery of some of its services be deemed to operate as an Employment Agency or an Employment Business

Senior Principal AI Engineer

Overview We are seeking a Senior Principal AI Engineer to design, build, and deliver production‑grade AI solutions for complex client environments. This role blends hands‑on AI engineering, technical leadership, and client‑facing consulting, with a strong focus on scalable, secure, and responsible AI delivery. You will work closely with clients and internal teams to translate business problems into engineered AI solutions, covering the full lifecycle from data ingestion through to deployment, monitoring, and optimisation. Responsibilities AI Engineering & Delivery Design, develop, and deploy end‑to‑end AI/ML solutions, including classical ML and generative AI use cases. Build and maintain production‑ready AI pipelines (data ingestion, feature engineering, model training, evaluation, deployment, monitoring). Apply MLOps best practices, including CI/CD for models, versioning, automated retraining, monitoring, and rollback. Ensure AI solutions are scalable, secure, performant, and reliable in real‑world environments. Architecture & Technical Leadership Define AI solution architectures aligned to client needs, constraints, and long‑term sustainability. Set and uphold engineering standards for AI development, testing, deployment, and monitoring. Evaluate and introduce emerging AI technologies (e.g. GenAI, LLMs, vector databases) where they deliver clear value. Client Engagement Engage directly with clients to understand AI use cases, data readiness, risks, and success criteria. Lead technical workshops and solution design sessions with client stakeholders. Act as a trusted technical adviser, guiding AI feasibility, trade‑offs, and implementation strategy. Responsible AI & Governance Embed Responsible AI principles including explainability, bias mitigation, auditability, and data privacy. Ensure compliance with data protection regulations (e.g. GDPR) and industry standards. Team & Capability Development Mentor AI engineers and data scientists, providing technical guidance and code/model review. Contribute to internal accelerators, reusable components, and AI delivery playbooks. Essential skills Solid software engineering background (Python required; additional languages a plus). Ability to communicate complex technical concepts clearly to non‑technical stakeholders. Experience Strong experience as an AI Engineer, ML Engineer, or similar role delivering production AI systems. Experience with ML frameworks (e.g. PyTorch, TensorFlow, scikit‑learn). Proven experience with MLOps and deploying models into live environments. Cloud experience (Azure, AWS, or GCP). Benefits Collaborative working environment - we stand shoulder to shoulder with our clients and our peers through good times and challenges We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses Competitive company benefits Always working as one team, our people are not afraid to think big and challenge the status quo As a Disability Confident Committed Employer we have committed to: Ensure our recruitment process is inclusive and accessible Communicating and promoting vacancies Offering an interview to disabled people who meet the minimum criteria for the job Anticipating and providing reasonable adjustments as required Supporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work at least one activity that will make a difference for disabled people"We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age". We treat everyone fairly and equitably across the organisation, including providing any additional support and adjustments needed for everyone to thrive

DevOps Engineer

CBSbutler Holdings Limited trading as CBSbutler

DevOps Engineer Up to £730 per day inside ir35 Active SC clearance required London/ Hybrid - 2/3 days per week onsite We are seeking an experienced DevOps Engineer to support the design, deployment, and maintenance of secure, scalable infrastructure and applications within a cloud-based environment. This role requires strong expertise in infrastructure as code, CI/CD automation, and platform engineering within AWS. Key Responsibilities Develop and maintain infrastructure as code using Terraform and Terragrunt to deploy and update services in AWS.
Build and manage machine images and container images for third-party COTS tools, incorporating platform-specific enhancements such as log aggregation and PKI integration.
Design, implement, and maintain CI/CD pipelines to automate the build, test, and deployment of infrastructure and application components.
Troubleshoot and resolve issues across application and infrastructure layers, including support for Linux and Windows virtual machines and hosted applications.
Ensure adherence to engineering best practices, coding standards, and operational processes.
Contribute to maintaining high service quality, reliability, and system performance.Required Skills & Experience Proven experience working as a DevOps Engineer in cloud environments, particularly AWS.
Strong hands-on experience with Terraform and Terragrunt.
Experience building and managing CI/CD pipelines (e.g., Jenkins, GitLab CI, or similar).
Solid understanding of containerisation and image creation.
Experience supporting both Linux and Windows environments.
Knowledge of logging, monitoring, and security practices, including PKI.
Strong troubleshooting and problem-solving skills. If this DevOps Engineer role is of interest, apply now

Full Stack Engineer - Python/Rust & React - Selby Jennings

Full Stack Engineer - Python/Rust & React

We’re partnering with a well‑capitalised, globally active hedge fund to hire a Full Stack Engineer into a high‑impact portfolio systems team. This group builds and owns the firm’s core transaction and position ledger - critical infrastructure used daily by portfolio managers and trading teams across multiple asset classes.

This is a true full‑stack role: backend services, event‑driven architecture, and a React/TypeScript frontend, all in production and close to the investment workflow.

What You’ll Be Working On

Designing and owning high‑performance, multithreaded backend services in Python, C#, or Rust
Building event‑driven, service‑oriented systems using Kafka or Kinesis
Developing React/TypeScript UIs used directly by trading and operations teams
Deploying and operating cloud‑native, serverless infrastructure on AWS
Working across SQL Server, Postgres, and Snowflake for transaction data and analytics

What They’re Looking For

5-15 years of experience in a production, enterprise engineering environment, with recent experience in finance
Strong backend fundamentals in Python, C#, or Rust
Proven ability to work end‑to‑end across the stack, including React (mandatory) and TypeScript
Production exposure to cloud platforms (AWS or Azure)
Bachelor’s degree or higher in Computer Science, Engineering, or a STEM discipline from a strong academic institution

If you’re a full stack engineer, with experience in finance, looking for real ownership, technical depth, and direct impact on how capital is managed, this is well worth a conversation. Apply for more information.

£45,000 - £70,000 GBP

Hybrid WORKING

Location: Leeds / London / Manchester , Central London, Greater London - United Kingdom Type: Permanent

Cloud Engineer

Location: Leeds / London / Manchester (Hybrid - minimum 3 days per week on-site)

Clearance: Must be eligible for UK Security Clearance (SC)

Type: Permanent

Salary: £45,000 - £70,000

About the Role of Cloud Engineer

Are you an experienced Cloud Engineer who thrives on solving complex technical challenges and wants to work with cutting-edge cloud technologies?

This is an exciting opportunity to join a highly skilled engineering team supporting critical national programmes that help keep the UK safe.

You will work as part of collaborative, autonomous DevOps teams, building cloud-native systems on AWS that directly support mission-critical capabilities.

Expect exposure to a wide range of projects, modern tooling, large-scale platforms, and the freedom to influence technology choices.

This role offers the chance to work across the full delivery lifecycle-designing, developing, deploying, and maintaining services-while being fully supported by a broad engineering community dedicated to continuous learning and innovation.

Key Responsibilities of the Cloud Engineer

Design, build, deploy and maintain applications and services on AWS
Contribute to technical decision-making and cloud architecture discussions
Develop solutions using AWS best practice, cloud-native tooling, and serverless technologies
Implement Infrastructure as Code (IaC) using tools such as CloudFormation, CDK or Terraform
Collaborate with end-users and stakeholders to deliver secure, scalable systems
Support CI/CD automation pipelines and modern DevOps workflows
Work within agile delivery teams (Scrum, Kanban, SAFe, etc.)
Continuously learn, experiment, and adopt new technologies

Essential Skills & Experience of the Cloud Engineer

Strong hands-on AWS expertise; comfortable acting as a subject matter expert
Proficiency with key AWS services (e.g., EC2, ECS, EKS, S3, Lambda, RDS, KMS, ELB, SNS, SQS, IAM)
Scripting experience (Shell, Bash or Python)
Coding experience in at least one AWS Lambda-compatible language
Experience with IaC tools (CloudFormation, CDK, Terraform)
Familiarity with version control systems (Git, Mercurial, Perforce)
Strong communication, problem-solving skills, and eagerness to learn
Experience working in Agile environments

Desirable Skills of the Cloud Engineer

AWS Associate certification (Solutions Architect, Developer, or DevOps)
Microservices and API design experience
Containerisation and orchestration (Docker, Kubernetes, ECS, EKS)
Knowledge of AWS monitoring, observability, and FinOps principles
CI/CD tooling experience (Jenkins, Bamboo, TeamCity, Bitbucket)
Automated testing frameworks
Working knowledge of Linux, networking, and firewalls

Security Clearance

Due to the nature of the work, candidates must be eligible and willing to obtain UK Security Clearance (SC).

You do not need to hold clearance to apply.

What’s on Offer for the Cloud Engineer

Hybrid working with flexible hours
25 days annual leave plus buy/sell options
Comprehensive benefits package including private medical & dental
Competitive pension scheme
Cycle-to-work and other lifestyle benefits
Annual bonus scheme
Dedicated Career Manager for progression and development
Access to extensive training platforms (e.g., online learning, certifications)
Supportive, inclusive engineering culture with strong diversity networks

Cloud DevOps Engineer

£80,000 - £100,000 GBP

Hybrid WORKING

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

Cloud DevOps Engineer

Location: Bristol / London (Hybrid - minimum 3 days per week on-site)

Employment Type: Permanent

Security Clearance: Eligibility for UK Security Clearance (SC) required

Salary: £80,000 - £100,000

About the Role of Cloud DevOps Engineer

Are you an experienced Cloud Engineer with a passion for AWS and a drive to solve complex technical challenges?

Join a specialist digital and intelligence organisation working at the forefront of national security, where you’ll engineer cloud-native solutions that directly support mission-critical capabilities.

In this role, you will work within empowered DevOps teams to design, build, deploy and maintain applications and services on AWS.

You’ll collaborate closely with end-users, experiment with new technologies, and influence architectural decisions.

This is a high-impact position where your work will contribute to the safety, resilience and digital advantage of the UK.

What You’ll Be Doing as a Cloud DevOps Engineer

Designing and delivering secure, scalable systems on AWS
Developing and maintaining applications using modern cloud-native services
Applying Infrastructure-as-Code (IaC) approaches using CloudFormation, CDK or Terraform
Writing clean, maintainable code in at least one Lambda-compatible language
Scripting automation tasks using Shell, Bash or Python
Supporting CI/CD pipelines and DevOps tooling to optimise delivery
Monitoring, troubleshooting and improving cloud operations and observability
Working in agile teams using Scrum, Kanban, SAFe or related frameworks
Collaborating with stakeholders to enhance system performance and reliability
Continuously learning and adapting to new tools, patterns and technologies

Essential Experience of the Cloud DevOps Engineer

Strong hands-on experience with AWS, ideally as a subject matter expert
Solid understanding of key AWS services (e.g., EC2, ECS, EKS, S3, Lambda, RDS, KMS, ELB, SNS, SQS, IAM)
Experience with IaC tooling (CloudFormation, CDK, Terraform)
Proficiency in scripting (Shell, Bash, Python)
Coding experience in at least one AWS Lambda-compatible language
Familiarity with version control systems (Git, Mercurial, Perforce)
Strong communication and problem-solving skills
Experience working within agile delivery environments

Desirable Experience of the Cloud DevOps Engineer

AWS Associate-level certification (Architect, Developer, DevOps)
Microservices and API design knowledge
Experience with Docker, Kubernetes, ECS, EKS
Understanding of monitoring, observability and FinOps in cloud environments
CI/CD experience (Jenkins, Bamboo, Bitbucket, TeamCity)
Automated testing frameworks
Linux, networking, routing and firewall knowledge

Security Requirements

Due to the nature of the work, applicants must be eligible to obtain UK Security Clearance (SC).

You do not need to already hold clearance to apply.

What You’ll Receive as a Cloud DevOps Engineer

Hybrid working with flexible hours
25 days annual leave plus options to buy, sell or carry over
Comprehensive benefits including private medical & dental care
Competitive pension scheme
Cycle-to-work and lifestyle benefits
Annual performance bonus
Dedicated Career Manager for progression and development
Access to high-quality training platforms and certification support
Inclusive, supportive culture with active diversity and wellbeing networks

AWS Solution Architect - Integration Specialist

££70,000 - £78,000 GBP

Onsite WORKING

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

AWS Solution Architect (Integration Specialist)

Location: London (Hybrid)

Salary: Up to £78,000 + 8-10% bonus

Clearance: Must be eligible for BPSS & SC (5 years UK residency required)

Company Overview

We’re supporting a leading global consulting organisation at the forefront of cloud, digital, and technology transformation. With a strong presence across public and private sector clients, the business delivers large-scale, high-impact programmes leveraging cutting-edge cloud technologies and modern engineering practices.

The organisation is known for its strong investment in people, offering structured career progression, continuous learning, and exposure to complex, enterprise-level projects.

Role Overview

This is an exciting opportunity for an AWS Solution Architect (Integration Specialist) to join at Associate Manager level, working on innovative cloud transformation programmes.

The role is focused on designing and delivering modern, cloud-native integration solutions across complex enterprise environments. You’ll work across the full lifecycle - from architecture and design through to implementation - leveraging AWS services and best practices to build scalable, secure, and high-performing systems.

You’ll collaborate closely with clients and internal teams, helping shape architecture decisions while remaining hands-on with delivery.

Key responsibilities include:

Designing and implementing AWS-based integration solutions using serverless, microservices, and containerised architectures
Building scalable and resilient applications using services such as Lambda, API Gateway, and Kubernetes (EKS)
Developing and managing CI/CD pipelines and automation frameworks
Applying cloud security best practices, including IAM, encryption, and compliance controls
Designing event-driven architectures using SQS, SNS, and Step Functions
Producing high-quality architecture documentation and contributing to design governance
Collaborating with stakeholders to deliver robust, cloud-first solutions

What They’re Looking For

Essential:

Strong experience designing and delivering AWS-based integration solutions
Expertise in API design and security (API Gateway, OAuth2, JWT, OpenAPI)
Experience with event-driven architectures (SQS, SNS, Step Functions)
Strong understanding of cloud-native development frameworks (e.g. Flask, FastAPI)
Experience with Kubernetes (EKS) and containerised environments
Solid understanding of cloud security, IAM, and encryption principles
Experience with CI/CD and DevOps practices

Desirable:

Experience integrating enterprise platforms such as SAP, Salesforce, or Oracle ERP
Experience in large-scale consulting or transformation environments
Exposure to highly regulated or secure environments

Senior Data Engineer - Commodities & Energy Trading

£Up to £175,000 GBP

Competitive Bonus

Hybrid WORKING

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

Senior Data Engineer - Commodities & Energy Trading

London | Permanent | Hybrid Working

Our client is a global commodities and energy trading organisation operating an asset-light, highly diversified business model. The firm combines advanced analytics, proprietary technology, and robust risk management to support trading, optimisation, and risk-management decisions across energy and commodities markets.

As a Senior Data Engineer, you will join a highly technical Data, AI & Analytics function responsible for building the data platforms that underpin trading, quantitative research, predictive analytics, and machine-learning use cases. This is a hands-on role with ownership across data ingestion, transformation, storage, and distribution, working closely with Data Scientists, Traders, and technology teams.

You’ll have the opportunity to:

Build and maintain scalable data pipelines supporting trading and analytics use cases
Ingest structured and unstructured data from diverse internal and external sources
Support predictive analytics, systematic trading, and machine-learning workloads
Partner closely with Data Scientists and Trading teams to deliver high-quality datasets
Contribute to cloud-native data platforms using modern engineering practices
Drive improvements in data quality, performance, and self-service capabilities

Your Responsibilities

As a Senior Data Engineer, you will:

Design and implement data ingestion pipelines using ETL, streaming, scraping, and batch approaches
Clean, enrich, and transform datasets for analytical and operational consumption
Persist data across databases, warehouses, and data lakes
Distribute data internally via APIs, Python packages, and direct querying
Maintain and enhance production data pipelines and databases
Support post-processing automation, including analytics, models, and visualisation workflows
Enable Data Scientists through shared libraries, cloud resources, and documented data access
Maintain knowledge bases covering data sources, pipelines, and usage

Key Requirements

As a Senior Data Engineer, you should have:

Strong engineering background in Data Engineering, Computer Science, or similar
Experience working in commodities, energy trading, or financial markets environments
Advanced Python skills, including extensive use of Pandas
Experience with analytical or time-series databases (e.g. Redshift, ClickHouse)
Hands-on experience with Docker and containerised workloads
Experience with Git and modern DevOps practices
Practical experience deploying infrastructure on AWS using IaC (e.g. CDK, CloudFormation)
A proactive, ownership-driven mindset with strong problem-solving skills

You will gain exposure with:

Working as a Senior Data Engineer, you will gain exposure to:

Direct collaboration with Traders and quantitative teams
Cloud-native data platforms supporting real-time and batch processing
Big-data and distributed processing tools
AWS services such as S3, Lambda, Athena, EMR, Kinesis, and EC2
Advanced analytics, visualisation, and data-science workflows
Emerging technologies across AI and machine learning

Why Join?

Work on data platforms that directly support trading and optimisation decisions
Own data engineering solutions end-to-end in a high-impact environment
Operate in a technically deep, collaborative engineering culture
Competitive compensation with performance-linked bonus
Hybrid working model supporting flexibility and collaboration

Interested? Apply now.

FX Risk Lead Java Developer - Vice President - Citi

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
Citi’s Markets technology team is growing at lightning speed, and we’re looking for talented technologists to help build the future of global banking. Our teams are creating innovations used across the globe. As the world’s most global bank, Citi provides an opportunity to touch every corner of the globe and deal with incomparable trade volumes, scale and impact. We’re looking for new, innovative ways to push the boundaries of financial technology. Citi’s global technology team spans 84 countries, with almost 30,000 colleagues managing thousands of projects across the globe. Our team is young but rapidly growing. Join an environment with a laser focus on growth and progress and take your career to the next level through the power of Citi’s unmatched globality and vast expertise.

We are currently building FX Risk valuation platform for Citi. There is a set of old and new platforms that serve the Client’s FX business in multiple countries by providing the ability for real-time derivatives pricing, risk management and data analytics. Our platform is starting to replace a set of the existing risk applications with new generation ones with web-based UI, server-side computing and grid technology, distributed in-memory solutions. The new application is going to serve traders, sales and external clients. Solution is scalable to cover multiple locations and meet latency requirements. Team is growing fast and now we are looking for a strong and motivated FX Risk Lead Java Developer.

Key Responsibilities:

Design, develop, and maintain Java-based microservices for high-throughput application
Integrate and optimize Apache Ignite based solution: in memory data grid for FX trades processing
Implement real time data ingestion and processing pipelines using Apache Kafka / Solace messaging
Design and maintain robust Mongo DB / Oracle data models and queries for data persistence
Ensure application scalability and reliability in cloud-hosted Linux based environment
Collaborate with DevOps to containerize services and deploy using CI/CD pipelines
Conduct performance tuning, code reviews, and troubleshooting production issues
Document system architecture, design decisions, and development processes

What we want from you:

Strong hands-on experience with Core Java and multithreading in high load system
Practice with JVM performance optimization and memory profiling
Familiarity with distributed systems architecture and in-memory computing concepts
Proven experience with in-memory caching solution Apache Ignite in production environment
Solid experience with MongoDB (CRUD, indexing, performance tuning)
Deep SQL knowledge and query optimization in Oracle database
Solid understanding of messaging technologies Apache Kafka / Solace
Proficiency in working with Linux environment and scripting
Experience deploying and maintaining applications in cloud platforms (AWS, Azure, etc.)
Passion to write code using TDD and be ready for L3 support and production release activities
English B1

Qualifications:

Experience in systems analysis and programming of software applications
Experience in managing and implementing successful projects
Working knowledge of consulting/project management techniques/methods
Ability to work independently, multi-task, and take ownership of various parts of a project or initiative

Nice-to-Have:

Understanding business processes of investment banking area
Knowledge of FX Risk valuation and pricing procedures
Experience with FX trade processing

Education:

Bachelor’s degree/University degree or equivalent experience

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 ------------------------------------------------------
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Applications Development ------------------------------------------------------
Time Type:
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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.

Lead Engineer - Kubernetes - London Stock Exchange Group

London Stock Exchange Group

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services - and our open-access model - we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder - which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE SUMMARY:

We are seeking a highly skilled and motivated Lead Technical Engineer with deep experience in Kubernetes and the CNCF landscape to join our growing team. In this role you will be a key contributor to the design, implementation and maintenance of our Kubernetes infrastructure, ensuring its scalability, reliability and security.

You will provide technical leadership and mentorship to other engineers, driving best practices and fostering a culture of continuous improvement. This is a hands-on role with significant opportunities to impact our technical strategy and influence the direction of our platform.

We are looking for a versatile engineering Lead/Principal with experience of building cloud platforms and leading software engineering teams that support critical applications at scale in cloud.

WHAT YOU’LL BE DOING:

Technical Leadership:

Lead the design, implementation, and maintenance of Kubernetes clusters and associated infrastructure components.
Provide technical guidance and mentorship to team members, fostering a culture of collaboration and continuous learning.
Drive innovation and best practices in cloud infrastructure design and implementation

Team Management:

Develops a team of Agile delivery leads, cloud engineers & consulting partners that design and build platform shared services and secure landing zones.
Ensures software engineering standards and modern SDLC practises are maintained.
Is required to be a technical authority for Kubernetes.
Understand security, risk and compliance frameworks, disaster recovery, high availability architectures, hardware, operating systems, and networking connectivity
Collaborates with internal teams (including Product Owners).
Provide solutions/guidance on Cloud budget management and optimisation.
Is responsible for the backlog of delivery for the Kubernetes container team.

Continuous Improvement:

Identify areas for improvement in existing processes, tools and workflows, and drive initiatives to enhance efficiency and reliability.
Stay current with industry trends and emerging technologies, evaluating their potential impact on our infrastructure.

Cross-Functional Collaboration:

Collaborate with cross-functional teams, including developers, DevOps engineers, and system administrators, to support their needs and align infrastructure initiatives with business goals.
Communicate effectively with stakeholders at all levels, providing updates on project status and key initiatives.

WHAT YOU’LL BRING:

3+ years of people management experience building strong teams and leading engineers.
Show a passion for people management and mentorship.
Hands on experience in software development methodologies and Agile based delivery.
proven experience with Cloud Native technologies on at least one of the major cloud services providers (AWS preferred).
Experience designing and delivering production cloud solutions at scale.
Degree in Computer Science, Engineering, or a related field (or equivalent experience).
Preferably have CKA, CKAD and CKS qualifications
Extensive experience designing, implementing, and managing Kubernetes-based cloud infrastructure.
Strong leadership and team management skills, with a consistent record of leading technical teams to success.
Deep understanding of cloud computing principles and technologies, with experience working with major cloud providers (AWS, Azure, GCP).
Proficiency in infrastructure as code tools and practices (Terraform etc.).
Excellent problem-solving and troubleshooting skills.
Strong communication and interpersonal skills, with the ability to effectively collaborate with application teams at all levels.

Career Stage:
Manager

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

AWS Solution Architect - London Stock Exchange Group

London Stock Exchange Group

This is an excellent opportunity to be one of the key people involved in governing digital and marketing platforms and roadmap across the organisation. As part of the Corporate Technology Architecture team, your role is to guide, advise, and recommend how our digital landscape evolves over the coming years and support the delivery teams offering outstanding solutions.

Role Overview:

We are looking for a seasoned AWS Solution Architect with over 10 years of experience in designing and delivering robust, scalable, and secure cloud solutions. The ideal candidate should have deep technical expertise across a broad range of AWS services, with a strong focus on data integration, serverless computing, enterprise search, and secure web hosting. This role is critical in shaping our cloud architecture strategy and ensuring alignment with business goals.

Key Responsibilities:

Solution Architecture and implement solutions using AWS Glue, Lambda, API Gateway, and Kafka for both real-time and batch data processing.
Design and deploy enterprise search platforms such as Elasticsearch to support scalable and efficient data discovery.
Lead the development and hosting of web applications on AWS, ensuring high availability, performance, and cost-efficiency.
Define and implement security architectures, including WAF (Web Application Firewall) policies and CDN caching strategies (e.g., CloudFront).
Collaborate with cross-functional teams to ensure cloud solutions meet security, compliance, and operational requirements.
Conduct architecture reviews, performance tuning, and cost optimisation exercises.
Document architectural decisions, patterns, and best practices.
Work with Business Stakeholders, Product Owners, Business Analysts to understand functional and non-functional requirements and interact with other cross-functional teams.
Contribute to Customer’s digital marketing strategies based on industry best practices.
Help project team to size & estimate project implementation and identify resources and skillset needed for delivery of solution.

Required Skills & Experience:

10+ years of experience in cloud architecture, with a strong focus on AWS.
Hands-on expertise with AWS Glue, Lambda, API Gateway, Kafka.
Experience with Elasticsearch or similar enterprise search technologies.
Proficiency in CloudFront, WAF, and other AWS security services.
Experience hosting and scaling websites using AWS (e.g., S3, EC2, ECS, Amplify).
Strong understanding of cloud security, IAM, and compliance frameworks.
Experience with CI/CD pipelines and Infrastructure as Code (e.g., CloudFormation, Terraform).
Excellent communication and stakeholder engagement skills.

Preferred Qualifications:

AWS Certified Solutions Architect - Professional (preferred but not mandatory).
Experience in enterprise-scale environments or regulated industries.
Familiarity with observability tools (e.g., CloudWatch, Datadog).

Personal skills and capabilities

Strong verbal and written communication skills, with the ability to communicate technical information to non-technical partners and to listen to identified concerns and adapt accordingly.
Ability to influence across multiple functions (technical and non-technical)
Quick Leader: Should understand the new implementation patterns and adapt.
A continuous desire and willingness to learn and develop your current knowledge and abilities.
Flexible in approach, adapting plans and strategies to help handle risks around ambiguity.
Problem solver with a strong intuition for business and proficient in current technological trends and business concepts

Career Stage:
Manager

London Stock Exchange Group (LSEG) Information:

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

AI Engineering Enablement Director - London Stock Exchange Group

London Stock Exchange Group

ABOUT US:

OUR PEOPLE:

ROLE PURPOSE:

Help bring our AI Capability Model to life by turning principles into practical, scalable ways of working. You will enable teams to build secure, responsible, resilient, and cost-effective AI solutions by creating clear guidance and reusable foundations, and by supporting lean, continuous assurance that helps teams deliver with confidence.

ROLE SUMMARY:
This role operates across the AI Governance , AI Engineering and our center of excellence supporting our business objectives with robust and manageable AI solutions.

WHAT YOU’LL BE DOING:

You will turn our AI architecture and governance principles into practical enablers for teams-creating the clarity, reusable foundations, and lean assurance needed to support high-quality delivery, steady velocity, and responsible growth across the organisation.

A) Turn principles into adoptable practice (Enablement)

Translate high-level architecture and governance guidance into practical, reusable assets that support consistent, scalable delivery.
Contribute to defining enabling services that help teams deliver and operate AI solutions safely and reliably.
Develop and maintain a library of reference artefacts (templates, examples, checklists) that support effective adoption of recommended practices.
Lead and facilitate the AI engineering knowledge and community activities-curating content, running learning sessions, and integrating feedback into improved guidance.
Review and adapt industry best practices, working with internal experts to publish reusable patterns and architectural recommendations.

B) Make assurance practical, lean, and continuous (Controls)

Support and refine a streamlined, evidence-based assurance approach that provides clear visibility across AI initiatives and their lifecycle.
Promote and enable automation of key checks within delivery workflows to help teams meet governance expectations efficiently.
Collaborate with architecture, governance, risk, security, product, and finance teams to align standards and close enablement gaps.
Ensure engineering practices remain aligned with relevant risk and compliance frameworks through clear, auditable evidence.

C) Curate reference assets for speed and consistency

Develop and evolve technology and project reference materials that support consistent assessment of fit, risks, and operating considerations.
Define and maintain criteria for reusable or endorsed patterns to support clarity and consistency across teams.

D) Keep us connected to the market

Monitor emerging industry practices, standards, and partner activity to maintain an outside-in perspective.
Translate external insights into practical internal guidance and reusable artefacts for teams.

OUTCOMES YOU’LL DRIVE:

AI initiatives are focused, prioritised, and progress efficiently through a streamlined intake and assessment flow.
Solutions are secure, resilient, and well-governed, with risks managed early and proportionately.
Engineering teams adopt practical standards and reusable patterns, improving quality and delivery velocity.
AI systems are observable and reliable in production, with behaviour that remains stable over time.
AI resources are used efficiently and responsibly, supporting sustainable and cost-aware operation.
AI development reflects responsible and ethical principles, including fairness, transparency, and strong data stewardship.

WHAT YOU’LL BRING:

Significant experience in cloud engineering, DevOps, or software delivery (Azure, AWS, or GCP), with a track record of incremental, agile delivery.
Hands-on development capability, including practical experience with Python and modern AI frameworks (e.g., LangChain, Semantic Kernel, or similar) to build or support agents, chat interfaces, or retrieval-augmented solutions.
Experience applying software engineering fundamentals: writing tests, structuring user stories, managing iterative releases, and working with CI/CD pipelines.
Experience in AI/ML, software, or platform engineering, with exposure to automated testing and infrastructure-as-code or policy-as-code.
Working knowledge of AI observability (logs, metrics, traces, behavioural signals) and practical methods to evaluate or improve AI system behaviour.
Familiarity with AI risk and governance frameworks (e.g., NIST AI RMF or similar) and the ability to align engineering practices with evidence packs.
Experience creating or curating engineering enablement assets such as templates, patterns, playbooks, or reusable guidance.
Strong communication skills, able to explain complex concepts clearly and engage confidently with both technical and non-technical audiences.
Ability to collaborate across diverse domains-architecture, security, privacy, product, engineering, and FinOps-using an inclusive and outcome-focused approach.
Comfort facilitating knowledge-sharing sessions, clinics, or community forums.

Nice to have:

Experience contributing to governance or assurance processes, including lightweight control models, intake or assessment flows, or dashboard-based visibility.
Exposure to AI FinOps, such as cost-aware model selection, unit economics, or prompt-efficiency practices.
Experience with MLOps or AI delivery tooling, or with AI-specific observability systems.
Participation in industry communities or standards bodies, with the ability to translate external practice into internal adoption.
Experience facilitating workshops or engineering enablement events.
Familiarity with AI-specific challenges, such as explainability, drift, data lineage, or safe release practices.
Understanding of operational quality practices, such as retrieval wiring, guardrails, or policy-as-code patterns.

WAYS OF WORKING:

Operates with a bias toward automation, self-service, and continuous improvement, using data-driven decisions and a growth mindset.
Acts in a lean, risk-aware, and responsible way, ensuring trusted outcomes for the business, customers, and society.

Career Stage:
Director

London Stock Exchange Group (LSEG) Information:

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Backend Engineer - PostgreSQL, AWS, Python.

Role Overview

The Senior Backend Engineer designs, delivers, and supports this transport - tech customers cloud platforms, with a strong focus on high-performance PostgreSQL databases and resilient AWS-native backend systems. The role spans full lifecycle delivery, from requirements and design to implementation, testing, and ongoing support.

This may seem like a lot, within a big organisation it would often be two separate roles. But that’s part of the opportunity - instead of being stuck doing a narrow set of tasks you’re able to drive all aspects of a solution - so more rewarding and interesting.

Key Responsibilities

Core

PostgreSQL Architecture & Performance - Design, optimise, and maintain high-performance, reliable, and supportable PostgreSQL databases.
Advanced SQL - Develop and refine complex, performant SQL and database objects.
Backend Engineering - Build and enhance backend services (primarily Python), ensuring strong coding, testing, and documentation practices.
AWS Delivery - Create and evolve solutions using RDS Aurora, Lambda, API Gateway, SNS/SQS, DynamoDB, and other serverless components.
Reliability & Observability - Build robust, resilient systems aligned with best-practice operations.
Infrastructure as Code - Implement automated deployments using Git, Bitbucket, and CloudFormation.
End-to-End Delivery - Own technical delivery from discovery to production rollout and support.

Additional

Collaborate directly with customers to translate requirements into technical solutions.
Take ownership of components, identifying risks and opportunities for improvement.
Work effectively across teams (frontend, operations, security).
Maintain high engineering standards and documentation.
Support incident investigation, root cause analysis, and preventative fixes.

Key Experience

5+ years’ hands-on development delivering production systems.
Deep PostgreSQL design, optimisation, and performance tuning expertise.
Strong AWS experience, including RDS Aurora and serverless architectures.
Proficiency in at least one backend language (preferably Python).
Experience with Git, automated deployments, and IaC (CloudFormation).
Collaboration across distributed/offshore teams.
Working knowledge of frontend technologies (React is a plus).
Proven track record across full delivery lifecycles.

Key Behaviours

Proactive & independent, taking ownership of solutions.
Analytical, balancing performance, reliability, and maintainability.
Customer-focused, translating needs into effective designs.
Clear communicator, to technical and non-technical audiences.
Collaborative, contributing positively to team outcomes.
Results-driven, delivering high-quality, production-ready systems.

Technical Architect - Data Platforms

Description

We are seeking an experienced Technical Architect to support the design and evolution of large-scale, cloud-based data platforms across, working across our portfolio of clients.

The Technical Architect will play a key role in shaping solution design patterns, ensuring alignment with established standards, and supporting a strategic transition and migrations across/to/from AWS & Azure.

Key Responsibilities

Define and evolve technical architecture patterns for data ingestion, processing, and access.
Design scalable, resilient, and cost-efficient data solutions within a Hub and Spoke model.
Support the design of new data ingestion pipelines (batch and Real Time).
Ensure alignment with organisational architectural standards and governance frameworks.
Contribute to target architecture roadmaps.
Provide architectural guidance across:
- Data ingestion (Kafka, APIs, SFTP)
- Data processing (PySpark, EMR, Glue)
- Storage (S3 and data lake patterns)
Collaborate with DevOps, Data Engineers, and Testers to ensure cohesive delivery.
Promote engineering best practices, including CI/CD, infrastructure as code, and observability.
Ensure robust handling of schema evolution and upstream data changes.
Support onboarding of new data sources and services into the platform.
Ensure solutions meet requirements for:
- Data quality and consistency
- Performance and scalability
- Security and compliance
Work within defined data modelling ownership boundaries where applicable.
Support cloud strategy evolution.
Avoid platform lock-in and ensure portable, future-proof designs.
Contribute to technical decision-making for future platform direction.
Work in blended, cross-functional teams.
Provide technical leadership and mentoring to delivery teams.
Ensure effective knowledge transfer and capability uplift.

Required Skills & Experience

Strong experience designing modern cloud-based data platforms.
Hands-on architectural experience with:
- AWS (essential): S3, EMR, Glue
- Kafka/event streaming architectures
- Python & PySpark-based data processing
Experience designing data ingestion pipelines (batch and Real Time).
Proficiency in Infrastructure as Code (Terraform).
Experience with GitHub-based workflows and CI/CD pipelines.
Experience with data lake and lakehouse architectures.
Strong understanding of:
- Data ingestion patterns
- Data transformation and curation layers
- Data access and productisation
Ability to design for large-scale datasets.
Experience supporting cloud migrations
Knowledge and experience with Azure & Microsoft Fabric & Databricks would be beneficial
Familiarity with event-driven and streaming-first architectures at scale.
Strong stakeholder engagement and cross-team collaboration skills.
Ability to operate effectively within existing governance and standards.
Pragmatic decision-making balancing delivery pace and technical quality.
Clear communicator able to translate complex architecture into actionable guidance.
Experience working in large, complex enterprise environments.

This role will require the ability to obtain and hold UK SC Clearance

Senior Software Engineer, CalcGraphs - Vice President - Citi

Job Overview
Team Overview
XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs.

Our team owns multiple Java Spring Boot Services that execute, partition, and track quantitative risk graphs/trades in a distributed environment. These graphs can fail due to their complexity and our system must adapt quickly to these failures to provide a seamless experience for clients.
XiP Compute Services are deployed onto OpenShift and Amazon’s Elastic Kubernetes Service (EKS). An important initiative in 2025 will be onboarding Google’s Kubernetes Engine to further expand our coverage. Our system scales on-demand, and we can run up to tens of thousands of replicas of our services across all asset classes.

Role Overview
We are seeking a Senior Engineer to fill the role of ‘Applications Development Technology Lead Analyst’ on the XiNG large scale distributed calculation platform ( XiP ).

In this role you will design, build, and maintain the calculation engine at the heart of the XiP platform. This engine is responsible for c. 0.5 billion risk & suitability calculations at Citi every day. A single customer run compresses 17 million minutes of compute into a single 90-minute execution.

Run on hundreds of thousands of pods across the entire XiP platform every day this calculation engine is both highly performant and rapidly changing to support new scenarios, technologies, and infrastructure.

As an engineer working on the calculation engine. You will work closely with software engineers, DevOps, and our customers to ensure reliable, secure, and scalable operations of our platform.

Responsibilities:

Take part of the shared responsibility for the long-term strategic direction of the XiP Calculation Engine:

Apply your experience and skills to develop the future versions of the calculation engine. This means making it faster, utilizing resources better, and scale to even greater sizes. This means adding new features without impacting performance of the platform in undesirable manner, small changes multiplied by millions of calculations have a high cost . This means solving hard problems like transferring small amounts of data to a huge number of machines.

Serve as advisor or coach to team members, allocating and overseeing work:

Mentor and guide mid-level developers, providing technical advice, code reviews, and career development support. Allocate tasks based on skill sets and project priorities, ensuring balanced workloads and timely delivery. Foster a collaborative and growth-oriented team environment, encouraging best practices and continuous learning.

Implement changes and improvements to Citi’s Risk Calculation Engine, including analyzing and designing improvements to the distribution mechanisms of the engine which regularly parallelizes 250,000 hours of compute into a single 90-minute execution:

Lead the design, development, and implementation of enhancements to the Risk Calculation Engine, focusing on optimizing its distribution mechanisms. Analyze current parallelization strategies and identify opportunities to further improve efficiency, scalability, and throughput.

Operationally support the optimization of Risk calculations by examining and providing SME level insight into the distributed execution of extremely large calculations:

Monitor and analyze the distributed execution of large-scale risk calculations, identifying performance bottlenecks and inefficiencies. Provide subject matter expertise to guide operational improvements, leveraging deep technical knowledge to recommend and implement optimizations that enhance calculation speed and resource utilization .

Plan, coordinate, and execute strategic changes to the engine to reach the next scaling milestone:

Develop and manage strategic initiatives aimed at scaling the Risk Calculation Engine to meet future business demands. Coordinate with stakeholders to ensure that all scaling efforts are aligned with customer needs.

Provide specialized customer support to optimize and improve large, distributed calculations.

Act as a primary point of contact for clients to address issues and optimize inefficiencies that arise during distributed workload execution.

Qualifications:

Multiple years professional software development experience with Java.
Solid experience with Java frameworks (e.g., Spring, Spring Boot , Quarkus ).
Experience designing, building, and maintaining large-scale, distributed systems.
Experience with RESTful API design and implementation.
Strong understanding of object-oriented programming and design patterns.
Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus.
Exposure to cloud platforms (e.g., AWS, Azure, GCP) and containerization (e.g., Docker, Kubernetes) is desirable.
Experience with unit testing, integration testing, and test automation frameworks (e.g., JUnit, Mockito).
Experience working in Agile/Scrum development environments.
Practical experience with Python for scripting, automation, or data processing tasks.
Experience with CI/CD pipelines and DevOps practices is a plus.

Education:

Bachelor’s or Master’s degree in Computer Science , Engineering, or a related field.

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.

Head of Azure Platform Security - Huxley

We have a current opportunity for a Head of Azure Platform Security on a permanent basis. The position will be based in London. For further information about this position please apply. Requirements - Hands-on Azure cloud security architecture and implementation - Defender for Cloud, Policy-as-Code, RBAC, PIM, private endpoints, and secure landing zone design; AWS security experience also considered - Network security engineering: firewall policy design and lifecycle management, micro-segmentation, NSG/UDR/NVA architecture, hub-spoke topology, and perimeter defence for hybrid environments - WAF design, deployment, and operational tuning - Cloudflare, Azure Application Gateway, or equivalent; custom rule authoring and false-positive management at production scale - Network flow log analysis and intrusion detection engineering - building detection logic for lateral movement, beaconing, anomalous egress, and C2 patterns - SIEM engineering: detection rule authoring (KQL, SPL, or equivalent), log pipeline design, alert correlation, triage workflow - you write the rules, not just read the dashboard - Endpoint and desktop security: EDR deployment and tuning (Defender for Endpoint, CrowdStrike), Intune/Jamf device management, privileged access workstations, JIT/JEA models - API and application security: threat modelling (STRIDE/PASTA), OAuth 2.0/OIDC implementation review, secrets management (Key Vault, HashiCorp Vault), and secure SDLC integration - PKI, certificate lifecycle automation, identity federation, and SSO across hybrid cloud and on-premises environments - Security automation and IaC: Python, PowerShell, Terraform, Bicep, or Sentinel analytics rules - you codify controls, you do not document them - MITRE ATT&CK coverage mapping; threat hunting, adversary emulation, and proactive gap analysis against realistic TTPs - Cloud infrastructure - Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets management Nice to Have o Financial services, trading, or capital markets - operational security in a regulated, high-availability, zero-downtime-tolerance environment o Zero-trust architecture: BeyondCorp, Zscaler, or equivalent; conditional access policy design and implementation o DDoS mitigation, BGP security, and network resilience engineering for latency-sensitive financial infrastructure o ISO 27001, SOC 2, DORA, or equivalent - hands-on implementation, not just audit participation o Red team, adversarial simulation, or penetration testing programme design - experience on both sides of the exercise To find out more about Huxley, please visit www.huxley.com Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales

Developer, Short Terrm Trading Technology - PIMCO

We are a leading global asset management firm with over 3,000 employees across 20 offices in 15 countries; we help millions of investors around the world pursue their financial goals.

We hire critical thinkers. People who thrive in a collaborative culture like ours where we solve real problems while building the future of finance.

You

Are excited to be part of a vibrant engineering community that values diversity, hard work, and continuous learning.
Love solving complex real-world business problems.
Recognize that cross-functional collaboration is a core component of success for the team.
Believe there are multiple ways to solve most technical problems and are willing to debate the trade-offs.
Have become a stronger engineer by making mistakes and learning from them.
Are a doer, someone who wants to grow their career and gain experience across technologies and business functions.

Continuously invest in a high-performance and inclusive culture, in which a diversity of backgrounds, experiences and viewpoints are celebrated and valued.
Encourage career mobility, so you can benefit from learning different functions and technologies, and we gain the benefits of your experience across teams.
Run technology pro bono programs that help the non-profit community and give our engineering community opportunities to volunteer and participate.
Offer education reimbursements and ongoing training in technology, communication, and diversity & inclusion.
Embrace knowledge sharing through lunch-and-learns, demos, and technical forums.
Consider our people to be our greatest asset-we will help you learn what PIMCO Technology has to offer so you can participate in activities that benefit your career while delivering impactful technology solutions.

Description

We are looking to hire a Java Back-End Developer to join our Short-Term Desk Technology team. This role focuses on building the next generation of trading and cash management systems used across our Short Term, Cash, and Collateral desks.

You will work on modernizing existing platforms, developing new cloud native services, and contributing to our broader migration toward AWS. The role offers close collaboration with front office stakeholders and ownership across the full software lifecycle.

Core Engineering

Design, build, and maintain high quality, scalable microservices using Java 21 and modern frameworks.
Develop new functionality while evolving existing components with clean, maintainable, well tested code.
Apply TDD, good CI/CD practices, and strong engineering standards.

Cloud & Platform Modernization

Contribute to our cloud migration initiatives by building containerized, cloud ready services.
Work with AWS services (e.g., Lambda, EKS, RDS, S3, MSK) to help move workloads off legacy environments.
Participate in improving observability through metrics, tracing, and logging.

AI & Automation

Use applied AI tooling (e.g., GitHub Copilot, MCP servers, and LLMs) to accelerate development, improve testing quality, and streamline operational automation.
Identify and implement opportunities for intelligent automation within systems (e.g., anomaly detection, documentation generation, automated runbooks).

Business Collaboration

Work directly with portfolio managers, traders, and operations teams to deliver high impact solutions.
Understand front office workflows and translate them into robust, performant technical designs

Required Qualifications

3- 5 years of strong experience with Java (preferably Java 17+; ideally Java 21) and back-end development
Familiarity with microservices, REST APIs, and event driven architectures.
Some exposure to AWS or cloud native engineering concepts (containers, CI/CD, infrastructure as code).
Interest or experience in using AI tools to boost productivity (code generation, test creation, documentation, etc.).
A proactive mindset, eagerness to learn, and ability to work in a fast-moving front office environment.
Strong communication skills and desire to partner closely with business users.

Why Join us?

Work on high visibility trading systems critical to PIMCO’s Short Term Desk.
Gain hands on experience with modern Java, cloud engineering, and applied AI.
Collaborate with a talented global engineering team and front office partners.
Opportunity to take real ownership - from design and implementation through to production.

Equal Employment Opportunity and Affirmative Action Statement

PIMCO recruits and hires qualified candidates without regard to race, national origin, ancestry, religion (including religious dress and grooming practices), sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), sexual orientation, gender (including gender identity and expression), age, military or veteran status, disability (physical or mental), any factor prohibited by law, and as such affirms in policy and practice to support and promote the concept of equal employment opportunity and affirmative action, in accordance with all applicable federal, state, provincial and municipal laws. The company also prohibits discrimination on other basis such as medical condition, or marital status under applicable laws.

Applicants with Disabilities

PIMCO is an Equal Employment Opportunity/Affirmative Action employer. We provide reasonable accommodation for qualified individuals with disabilities, including veterans, in job application procedures. If you have any difficulty using our online system due to a disability and you would like to request an accommodation, you may contact us at 949-720-7744 and leave a message. This is a dedicated line designed exclusively to assist job seekers with disabilities to apply online. Only messages left for this purpose will be considered. A response to your request may take up to two business days.

Delivery Manager - Mainframe Modernisation

Contract Initial 6 months Inside IR35 £500 per day

We’re looking for a hands-on Delivery Manager to support a large-scale mainframe modernisation and exit programme, targeting full decommissioning by late 2029 / early 2030.

This is a delivery-focused role suited to someone confident managing stakeholders, joining the dots across complex technical landscapes, and driving progress across multiple teams.

The Role

You’ll support a major programme to modernise and retire a legacy mainframe estate spanning supply chain, logistics, finance and people systems. The work includes accelerating existing decommissioning plans, standing up new refactoring workstreams, and helping the business safely exit the mainframe.

What You’ll Be Doing

Managing delivery across integration and batch-heavy workstreams
Driving stakeholder engagement across engineering, architecture and business teams
Coordinating inter-team dependencies and unblocking issues
Tracking delivery, risks and issues using Jira
Supporting investigation into legacy applications, historic data usage and batch processes
Helping shape the transition from mainframe to cloud-based platforms (e.g. AWS microservices / SAAS)

What We’re Looking For

Proven experience as a Delivery Manager in complex, legacy or transformation environments
Strong stakeholder management and communication skills
Comfortable working across multiple teams and domains
A technical enough background to understand the landscape and challenge constructively (not language-specific)
A deep-dive mindset for investigating historic issues and dependencies
A hands-on performer, not a purely coaching delivery lead

Programme Context

Several applications identified for decommissioning (mainly housekeeping)
Several applications already decommissioned but with data still in use
Other systems at varying stages (awaiting strategic decisions, re-implementation, or unknown)
The mainframe currently limits speed of change and AI adoption

Contract Details

Initial 6 months contract with extensions likely focused on discovery and shaping
Inside IR35
£500 per day - via Umbrella
Start required within 6 weeks
On-site workshops as required in London and occasionally Coventry (typically 1-2 days per week, flexible otherwise)

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

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