Make yourself visible and let companies apply to you.
Role title
Roles
Full Stack Engineer Jobs in London
Trending Full Stack Engineer jobs in London
Get notified about new jobs that match this search?
Lead AI Developer (Python/Golang)
Sky
Multiple locations
Hybrid
Senior
Private salary
RECENTLY POSTED

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.

As a Senior Developer, you will design, build, and scale an AI Operations platform supporting Sky and NBCUniversal. You will focus on alert ingestion, correlation, and intelligent automation using full-stack development, machine learning, and Generative AI (GenAI).

What you’ll do

  • Design, build and maintain full-stack software solutions using Golang and Python, spanning services, APIs and automation components
  • Contribute to the architecture and evolution of Sky’s AI Operations platform, shaping intelligent automation and large-scale operational workflows
  • Develop and operate cloud-native systems on AWS, including automated testing frameworks, CI/CD pipelines and environment validation
  • Build reliable alerting, correlation and automation capabilities that support high-scale streaming and live service environments
  • Produce high-quality technical documentation, covering design decisions, configuration, deployment processes and operational runbooks
  • Collaborate closely with engineers, product teams and operational stakeholders to deliver robust, scalable and observable systems
  • Troubleshoot complex distributed systems, identifying root causes and driving continuous improvement across the platform
  • Mentor engineers through code reviews, design discussions and technical guidance, supporting a culture of engineering excellence

What you’ll bring

  • Strong experience in software engineering within cloud or platform environments, ideally with exposure to IaC, observability and automation tooling
  • Proficiency with Golang and/or Python, alongside experience building APIs, backend services and distributed systems
  • Solid understanding of data technologies such as MongoDB or Postgres, including schema design, optimisation and operational considerations
  • Experience applying AI, ML or algorithmic techniques within software platforms, automation pipelines or operational tooling
  • Strong knowledge of RESTful API design, integration patterns and modern automation approaches (including low-code/no-code tools)
  • Ability to create and maintain clear technical documentation and architectural artefacts, supporting knowledge-sharing and change management
  • A track record of solving complex engineering challenges, introducing innovative ideas and influencing technical direction within a team or platform

Team overview

You’ll join a globally distributed engineering team working across Sky and NBCUniversal platforms, supporting services used by millions of customers worldwide.

The team operates at the intersection of software engineering, platform reliability, and AI-assisted operations. We build systems that help engineering and operations teams detect issues earlier, respond faster, and continuously improve platform resilience and operational outcomes. Collaboration across regions, disciplines, and time zones is a core part of how we work.

Global Streaming Technology

Our team develops and supports market-leading video streaming services, underpinned by state-of-the-art engineering principles. We do this at huge scale: for over 50 million customers globally, spanning NBCUniversal Peacock in the US and Sky, NOW and SkyShowtime across Europe. No matter the device, the time or the place, we make sure that our diverse audiences can easily find and enjoy whatever they want to watch, choosing from the world’s best entertainment, news and sport.

The rewards

There’s one thing people can’t stop talking about when it comes to : the perks . Here’s a taster:

  • Sky Q, for the TV you love all in one place

  • The magic of Sky Glass at an exclusive rate

  • A generous pension package

  • Private healthcare

  • Discounted mobile and broadband

  • A wide range of 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

Osterley

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 are 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.

Leeds

Leeds is home to two Sky offices; our contact centre and digital tech hub at Whitehall, and our Central Square customer sales centre right at the heart of the city. Our modern spaces, with subsidised cafes and dedicated break-out spaces, provide a balance for our hybrid working teams. Need a break? You can blow off steam over a game of pool or table tennis, or stay fit with local gym discounts

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.

Contract Algo Trading Java Developer - eTrading, low latency, Java APIs, Multithreading, FIX
Scope AT Limited
London
Hybrid
Mid - Senior
Private salary
RECENTLY POSTED

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.

Senior Developer - Golang/Python
Sky
Multiple locations
Hybrid
Senior
Private salary
RECENTLY POSTED

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.

As a Senior Developer, you will design, build, and scale an AI Operations platform supporting Sky and NBCUniversal. You will focus on alert ingestion, correlation, and intelligent automation using full-stack development, machine learning, and Generative AI (GenAI).

What you’ll do

  • Design, build and maintain full-stack software solutions using Golang and Python, spanning services, APIs and automation components
  • Contribute to the architecture and evolution of Sky’s AI Operations platform, shaping intelligent automation and large-scale operational workflows
  • Develop and operate cloud-native systems on AWS, including automated testing frameworks, CI/CD pipelines and environment validation
  • Build reliable alerting, correlation and automation capabilities that support high-scale streaming and live service environments
  • Produce high-quality technical documentation, covering design decisions, configuration, deployment processes and operational runbooks
  • Collaborate closely with engineers, product teams and operational stakeholders to deliver robust, scalable and observable systems
  • Troubleshoot complex distributed systems, identifying root causes and driving continuous improvement across the platform
  • Mentor engineers through code reviews, design discussions and technical guidance, supporting a culture of engineering excellence

What you’ll bring

  • Strong experience in software engineering within cloud or platform environments, ideally with exposure to IaC, observability and automation tooling
  • Proficiency with Golang and/or Python, alongside experience building APIs, backend services and distributed systems
  • Solid understanding of data technologies such as MongoDB or Postgres, including schema design, optimisation and operational considerations
  • Experience applying AI, ML or algorithmic techniques within software platforms, automation pipelines or operational tooling
  • Strong knowledge of RESTful API design, integration patterns and modern automation approaches (including low-code/no-code tools)
  • Ability to create and maintain clear technical documentation and architectural artefacts, supporting knowledge-sharing and change management
  • A track record of solving complex engineering challenges, introducing innovative ideas and influencing technical direction within a team or platform

Team overview

You’ll join a globally distributed engineering team working across Sky and NBCUniversal platforms, supporting services used by millions of customers worldwide.

The team operates at the intersection of software engineering, platform reliability, and AI-assisted operations. We build systems that help engineering and operations teams detect issues earlier, respond faster, and continuously improve platform resilience and operational outcomes. Collaboration across regions, disciplines, and time zones is a core part of how we work.

Global Streaming Technology

Our team develops and supports market-leading video streaming services, underpinned by state-of-the-art engineering principles. We do this at huge scale: for over 50 million customers globally, spanning NBCUniversal Peacock in the US and Sky, NOW and SkyShowtime across Europe. No matter the device, the time or the place, we make sure that our diverse audiences can easily find and enjoy whatever they want to watch, choosing from the world’s best entertainment, news and sport.

The rewards

There’s one thing people can’t stop talking about when it comes to : the perks . Here’s a taster:

  • Sky Q, for the TV you love all in one place

  • The magic of Sky Glass at an exclusive rate

  • A generous pension package

  • Private healthcare

  • Discounted mobile and broadband

  • A wide range of 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

Osterley

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 are 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.

Leeds

Leeds is home to two Sky offices; our contact centre and digital tech hub at Whitehall, and our Central Square customer sales centre right at the heart of the city. Our modern spaces, with subsidised cafes and dedicated break-out spaces, provide a balance for our hybrid working teams. Need a break? You can blow off steam over a game of pool or table tennis, or stay fit with local gym discounts

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.

Senior AI Programmer (Python/Golang)
Sky
Multiple locations
Hybrid
Senior
Private salary
RECENTLY POSTED

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.

As a Senior Developer, you will design, build, and scale an AI Operations platform supporting Sky and NBCUniversal. You will focus on alert ingestion, correlation, and intelligent automation using full-stack development, machine learning, and Generative AI (GenAI).

What you’ll do

  • Design, build and maintain full-stack software solutions using Golang and Python, spanning services, APIs and automation components
  • Contribute to the architecture and evolution of Sky’s AI Operations platform, shaping intelligent automation and large-scale operational workflows
  • Develop and operate cloud-native systems on AWS, including automated testing frameworks, CI/CD pipelines and environment validation
  • Build reliable alerting, correlation and automation capabilities that support high-scale streaming and live service environments
  • Produce high-quality technical documentation, covering design decisions, configuration, deployment processes and operational runbooks
  • Collaborate closely with engineers, product teams and operational stakeholders to deliver robust, scalable and observable systems
  • Troubleshoot complex distributed systems, identifying root causes and driving continuous improvement across the platform
  • Mentor engineers through code reviews, design discussions and technical guidance, supporting a culture of engineering excellence

What you’ll bring

  • Strong experience in software engineering within cloud or platform environments, ideally with exposure to IaC, observability and automation tooling
  • Proficiency with Golang and/or Python, alongside experience building APIs, backend services and distributed systems
  • Solid understanding of data technologies such as MongoDB or Postgres, including schema design, optimisation and operational considerations
  • Experience applying AI, ML or algorithmic techniques within software platforms, automation pipelines or operational tooling
  • Strong knowledge of RESTful API design, integration patterns and modern automation approaches (including low-code/no-code tools)
  • Ability to create and maintain clear technical documentation and architectural artefacts, supporting knowledge-sharing and change management
  • A track record of solving complex engineering challenges, introducing innovative ideas and influencing technical direction within a team or platform

Team overview

You’ll join a globally distributed engineering team working across Sky and NBCUniversal platforms, supporting services used by millions of customers worldwide.

The team operates at the intersection of software engineering, platform reliability, and AI-assisted operations. We build systems that help engineering and operations teams detect issues earlier, respond faster, and continuously improve platform resilience and operational outcomes. Collaboration across regions, disciplines, and time zones is a core part of how we work.

Global Streaming Technology

Our team develops and supports market-leading video streaming services, underpinned by state-of-the-art engineering principles. We do this at huge scale: for over 50 million customers globally, spanning NBCUniversal Peacock in the US and Sky, NOW and SkyShowtime across Europe. No matter the device, the time or the place, we make sure that our diverse audiences can easily find and enjoy whatever they want to watch, choosing from the world’s best entertainment, news and sport.

The rewards

There’s one thing people can’t stop talking about when it comes to : the perks . Here’s a taster:

  • Sky Q, for the TV you love all in one place

  • The magic of Sky Glass at an exclusive rate

  • A generous pension package

  • Private healthcare

  • Discounted mobile and broadband

  • A wide range of 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

Osterley

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 are 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.

Leeds

Leeds is home to two Sky offices; our contact centre and digital tech hub at Whitehall, and our Central Square customer sales centre right at the heart of the city. Our modern spaces, with subsidised cafes and dedicated break-out spaces, provide a balance for our hybrid working teams. Need a break? You can blow off steam over a game of pool or table tennis, or stay fit with local gym discounts

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.

Senior Growth Engineer - Hybrid, London
ALFA TECHNOLOGY RECRUITMENT LTD
London
Hybrid
Senior
£75,000
RECENTLY POSTED

Role Overview

I am supporting a high growth D2C supplement brand who are seeking a high-leverage Senior Growth Engineer to operate at the critical intersection of ecommerce and AI automation. This is a pivotal role designed for a technical ‘builder’ who can bridge the gap between commercial strategy and execution. Working directly with the ecommerce leadership, you will own the technical roadmap for growth, focusing on building, automating, and optimising the systems that drive our commercial performance and operational efficiency.

Key Responsibilities

  • Ecommerce Optimisation:Develop and enhance our Shopify experience through custom Liquid development, CRO experiments, and advanced UX testing to drive conversion.
  • Technical Ecosystem Management:Lead the integration and optimisation of our tech stack, including Klaviyo, Recharge, and custom APIs, ensuring a seamless data flow across the customer journey.
  • AI & Automation:Architect and deploy Python-based scripts and AI workflows to automate manual processes, accelerate output, and improve business-wide efficiency.
  • Retention & Lifecycle:Build sophisticated retention automations and lifecycle flows that measurably increase Customer Lifetime Value (LTV).
  • Data Infrastructure:Enhance tracking, data visibility, and performance infrastructure to ensure all growth experiments are accurately measured and scalable.

Required Skills & Experience

  • 36 years of experience in a high-growth startup, D2C brand, or specialised ecommerce agency.
  • Expert-level proficiency in JavaScript, HTML, CSS, and Shopify/Liquid development.
  • Proven ability to write Python or similar scripting languages for automation and AI-driven workflows.
  • A ‘builder’ mindset with a bias for action you prefer shipping code to sitting in strategy meetings.
  • Strong commercial acumen with an understanding of unit economics and growth metrics.

Nice-to-Have Qualifications

  • Experience with headless e-commerce architectures.
  • Deep understanding of attribution modelling and advanced GA4 configurations.
  • Prior experience in a remote-first, fast-paced environment.
Full Stack Software Engineer
Vector Recruitment
London
Hybrid
Mid - Senior
£70,000 - £100,000
RECENTLY POSTED
+2

Full Stack Software Engineer (Platform & Cloud)
Location: London (Hybrid - 2 days onsite)
Salary: £70,000 £100,000k (DOE)
Contact: Adam Mayne (url removed) (phone number removed)

An exciting opportunity for a Full Stack Software Engineer to join a fast growing London technology design consultancy building next generation cloud and platform solutions for an array of different clients in industries, such as FinTech, HealthTech, GovTech and MedTech. The company develops next generation cloud native, highly scalable platforms, combining modern web technologies with cutting edge backend and infrastructure engineering.

As a Full Stack Software Engineer, you ll be involved not only in feature development but also in the evolution of the underlying platform and cloud architecture. This is a hands on role offering real ownership, technical influence, and the chance to work across product, platform, and cloud concerns in a high growth startup environment.

What you ll be doing as Full Stack Software Engineer

  • Designing, building, and maintaining front end user interfaces using Angular and modern web technologies
  • Developing and integrating API driven backend services and microservices with Go, and scalable frameworks as Kubernetes.
  • Contributing to the design and evolution of scalable, distributed systems running in the cloud
  • Working alongside platform and infrastructure engineers on containerised workloads, deployments, and system reliability
  • Debugging and resolving issues across the full stack, from UI through to backend and cloud services
  • Participating in code reviews, CI/CD pipelines, and continuous improvement of engineering standards
  • Collaborating closely with product, UX, and engineering teams to deliver robust, production ready solutions

What we re looking for in a Full Stack Software Engineer

  • At least 4 years+ experience as a Full Stack or Software Engineer
  • Strong experience with Angular or similar modern front end frameworks
  • Solid understanding of backend development, APIs, and system integration
  • Experience working with cloud platforms such as AWS or Azure
  • Skilled in Go Language.
  • Knowledge of Kubernetes and Docker
  • Experience with SQL or NoSQL databases (e.g. MS SQL, MySQL, Redis)
  • Familiarity with CI/CD pipelines, version control, and modern software delivery practices
  • Comfortable working in a fast paced startup environment, contributing across both product and platform concerns
  • A collaborative mindset with a willingness to learn and adapt
  • This position doesn t offer sponsorship and due to the nature of some of their clients we are looking for people who are able to obtain SC clearance.
Front-End Developer (React and React Native)
Foresters Financial
Bromley
Hybrid
Mid - Senior
Private salary
RECENTLY POSTED
+1

Front-End Developer (React and React Native) Competitive salary Bromley, Kent Fixed Term Contract (12 Months) We’re looking for an experienced Frontend Developer (React & React Native) to join our Digital Solutions team on a 12‑month fixed‑term contract. In this hands‑on role, you’ll play a key part in growing our digital platform, delivering intuitive omni‑channel services for our customers, and enhancing the workflows and systems that support our customer‑facing teams. You’ll be involved across the full development lifecycle from collaborating with the business to understand customer needs, through design and build, to testing and release. Strong React and React Native expertise, a passion for clean, scalable front‑end development, and a customer‑first mindset will be critical to your success. What you will do \* Design, build and maintain web applications using React \* Develop and support mobile applications using React Native \* Integrate applications using RESTful APIs \* Deploy applications and support releases into production \* Build responsive, accessible and well‑structured user interfaces using HTML, CSS and JavaScript \* Contribute to front‑end architecture and application design \* Collaborate with the business, architects and other multi‑skilled team members to gather requirements and shape solutions \* Take ownership of projects from concept through to delivery \* Estimate, prioritise and manage workloads effectively across the development lifecycle \* Ensure solutions meet both technical standards and business needs \* Stay up to date with emerging trends and best practices in web and mobile development \* Support and coach other team members where appropriate Working hours are 40 hours a week Monday to Friday. Start times are flexible from 8.30am to 9.30am. Hybrid working is available a minimum of 2 days per week working in the office. What we require \* Proven experience developing with React JS and React Native \* Strong experience with Redux Toolkit \* Solid understanding of modern JavaScript, HTML and CSS \* Experience building secure, customer‑facing front‑end applications \* Ability to work with web services that integrate with external systems \* Experience designing or working closely with APIs \* .NET / C# experience is desirable but not essential \* Confident communicator, able to work effectively with both technical and non‑technical stakeholders \* Excellent problem‑solving and analytical skills What we offer you \* Competitive salary \* Annual holiday allowance of 25 days holiday plus bank holidays \* Life Assurance (based on pensionable earnings) \* Generous contributory Pension scheme \* 1 days paid charitable workday \* Employee Assistance Programme About us Foresters Financial is not your typical financial services provider. Those who join our purpose-driven organisation enjoy a culture of collaboration, creativity, and mutual respect and are challenged to do their best to make a difference every day. We help everyday families achieve their financial goals and make a lasting difference in their lives and communities. What we do We help everyday families achieve their financial goals and make a lasting difference in their lives and communities. We will continue to do this by employing enthusiastic and talented Financial Advisers working across the country and equally talented people to be based at our Head Office in Bromley

Senior Developer
Tiro Partners
London
Hybrid
Senior
£500/day - £550/day
RECENTLY POSTED

Senior Software Engineer Java AI London 500- 600/day

About the Role

We are seeking an exceptional Senior Software Engineer with expertise in Java and AI to join our client, an established financial services brand, on a 6-month contract Outside IR35. This is a unique opportunity for a Senior Software Engineer to work at the cutting edge of AI-driven development.

The Opportunity

As a Senior Software Engineer, you’ll join a small, innovative team modernising and simplifying critical legacy services using cutting-edge AI tooling. You’ll demonstrate what’s possible when AI is deeply integrated throughout the software development lifecycle, working with the latest AI technologies including Claude Code, GitHub Copilot, MCP, LLMs.

Senior Software Engineer will:

  • Develop and maintain software applications using Java
  • Implement AI solutions to enhance software functionality and accelerate development workflows
  • Collaborate with cross-functional teams to define, design, and ship new features
  • Leverage AI technologies throughout the development lifecycle
  • Participate in code reviews and maintain code quality standards
  • Modernise legacy services using AI-first approaches

The ideal experience:

  • 6+ years of experience in software development
  • Strong background in Java programming and modern Java frameworks
  • Proven experience with AI technologies such as: Claude Code, GitHub Copilot, MCP (Model Context Protocol), LLM (Large Language Models)
  • Track record of implementing AI solutions in production environments
  • Experience working in financial services (desirable)
  • Strong collaboration and communication skills

What We Offer

  • 500- 600 per day (Outside IR35)
  • 6-month contract with potential for extension
  • Hybrid working in London

If you’re a Senior Software Engineer with strong Java expertise and proven experience implementing AI technologies, we want to hear from you.

Senior Software Developer
Tech4 Ltd
London
Hybrid
Senior
£64,000 - £70,000
RECENTLY POSTED

Senior Software Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world

Highly successful and fast growing organisation has an exciting opportunity for a Senior Software Developer (PYTHON/AWS/REACT).

They are looking for a talented individual who will design, implement, and maintain their publishing software, systems, and customer-facing digital products.

Requirements

  • Design and implement systems and software to meet requirements using appropriate tools and methods.
  • Promote the creation of high-quality code by commitment to practices such as test-driven development, pair programming and code review.
  • Be responsible for the technical development of all stages of software creation, including testing; ensure that implementation meets security, performance, and safety requirements.
  • Suggest improvements to the code base, development processes, tooling and working practices. Encourage innovation by identifying, evaluating and adoption of emerging technologies.
  • Assist with the design, implementation, and testing of APIs that adhere to the Open API specification

Knowledge & Skills for this job

  • Able to demonstrate commercial software development experience.
  • Practical experience in system design, development, testing and operational stability.
  • Deep knowledge and experience in Python and its ecosystem, patterns and pitfalls.
  • Experience applying continuous delivery, test driven development and pair programming.
  • Experience of working in an agile environment and an understanding of Scrum principles in particular.
  • Experience writing and consuming RESTful APIs in Python.
  • Experience with AWS services (Lambda, DynamoDB, ElasticSearch).
  • Experience with creating web application UIs using ReactJS and with TypeScript

The Directorate

This role will work closely with our Head of Engineering, Head of Data Science, QA Manager, Lead Software Developers, Software Developers and Chief Technology Officer.

The Team

As well as the above teams, you will be working across the organisation. We are welcoming someone who sees opportunities, is proactive and energetic wanting to make a difference to the way we wor

Excellent opportunity to positively impact patient safety whilst working on complex, challenging and career defining projects.

Basic salary £64,000 - 70,000 + excellent benefits

Hybrid role - between 4 - 8 days per month in the London office, the rest remote

Senior Python Developer
Tech4 Ltd
London
Hybrid
Senior
£64,000 - £70,000
RECENTLY POSTED

Senior Python Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world

Highly successful and fast growing organisation has an exciting opportunity for a Senior Software Developer (PYTHON/AWS/REACT).

They are looking for a talented individual who will design, implement, and maintain their publishing software, systems, and customer-facing digital products.

Requirements

  • Design and implement systems and software to meet requirements using appropriate tools and methods.
  • Promote the creation of high-quality code by commitment to practices such as test-driven development, pair programming and code review.
  • Be responsible for the technical development of all stages of software creation, including testing; ensure that implementation meets security, performance, and safety requirements.
  • Suggest improvements to the code base, development processes, tooling and working practices. Encourage innovation by identifying, evaluating and adoption of emerging technologies.
  • Assist with the design, implementation, and testing of APIs that adhere to the Open API specification

Knowledge & Skills for this job

  • Able to demonstrate commercial software development experience.
  • Practical experience in system design, development, testing and operational stability.
  • Deep knowledge and experience in Python and its ecosystem, patterns and pitfalls.
  • Experience applying continuous delivery, test driven development and pair programming.
  • Experience of working in an agile environment and an understanding of Scrum principles in particular.
  • Experience writing and consuming RESTful APIs in Python.
  • Experience with AWS services (Lambda, DynamoDB, ElasticSearch).
  • Experience with creating web application UIs using ReactJS and with TypeScript

The Directorate

This role will work closely with our Head of Engineering, Head of Data Science, QA Manager, Lead Software Developers, Software Developers and Chief Technology Officer.

The Team

As well as the above teams, you will be working across the organisation. We are welcoming someone who sees opportunities, is proactive and energetic wanting to make a difference to the way we wor

Excellent opportunity to positively impact patient safety whilst working on complex, challenging and career defining projects.

Basic salary £64,000 - 70,000 + excellent benefits

Hybrid role - between 4 - 8 days per month in the London office, the rest remote

Senior Full Stack Engineer
RSMB
London
Hybrid
Senior
£85,000
RECENTLY POSTED

RSMB is seeking an experienced and highly capable Senior Full Stack Engineer to play a central role in the design, development, and evolution of our expanding product suite, including Barb Ads Hub, NMO XCM, and our Data Fusion platform. You will join the team based in London (Hybrid 2 days per week in the office). Youwill join us on a full-time, permanent basis, and in return, you will receive a competitive salary of up to £85,000 per annum, based on experience.

RSMB is a leading company specialising in media measurement solutions. We work with a wide range of clients delivering both long-term contracts like Barb (UK TV audience measurement) and RAJAR (Radio audience measurement), and ad hoc projects. We are proud that we have been a Barb TV audience measurement contractor since 1989 and a RAJAR contractor since 2007. Our team of around 50 people are based in Central London, and we are currently operating hybrid working: splitting the week between home and office working.

The Senior Full Stack Engineer role:

This role sits within the Development team in the Technology department and is critical to delivering scalable, high-performance, data-driven products. You will work across the full stack, contributing to backend services, APIs, and frontend applications, while collaborating closely with data science, product, and external partners to deliver robust, user-focused solutions. RSMB has been a specialist in data science and audience measurement for almost 40 years, best known for developing industry-standard methodologies and measurement solutions. We are now building on that heritage through a growing suite of platforms designed to connect datasets, power advanced analytics, and deliver actionable insights across organisations. With around 50 staff and a hybrid setup in Central London, we combine deep technical expertise with a collaborative, product-focused mindset.

Key responsibilities as our Senior Full Stack Engineer will include:

Full Stack Development & System Design

  • Designing and building scalable, maintainable, and high-performance applications across backend and frontend layers.
  • Developing backend services using Python and SQL, with integration into Azure-based infrastructure and Snowflake data platforms.
  • Building intuitive, performant front-end interfaces using React and modern JavaScript/TypeScript frameworks.
  • Contributing to architecture decisions across multiple products, ensuring consistency, scalability, and long-term maintainability.
  • Designing and developing APIs for internal and external consumption.

Data Platform & Product Engineering

  • Working on data-intensive products, including Data Fusion and analytics platforms, handling large-scale datasets and complex transformations.
  • Collaborating with data scientists to productionise models, pipelines, and analytical workflows.
  • Designing data models, pipelines, and query strategies to support performant analytics and reporting use cases.
  • Ensuring data quality, integrity, and observability across systems.

Delivery & Engineering Excellence

  • Taking ownership of features from design through to deployment and ongoing iteration.
  • Working within agile development processes, contributing to sprint planning, estimation, and continuous improvement.
  • Writing clean, well-tested, and maintainable code, with strong emphasis on automated testing and CI/CD practices.
  • Contributing to engineering standards, code reviews, and best practices across the Development team.

Cross-functional Collaboration

  • Working closely with Product Managers, Data Scientists, QA, and Technical Leadership to deliver high-quality products.
  • Collaborating with external partners, clients, and industry stakeholders where required.
  • Translating complex data and technical requirements into scalable engineering solutions.

AI-Enabled Development Practices

  • Effectively integrating AI-assisted development tools (e.g., code generation, testing, debugging, documentation) into day-to-day workflows.
  • Applying critical judgement to ensure correctness, security, and maintainability of AI-assisted outputs.
  • Continuously evaluating emerging AI tools and practices to improve engineering efficiency and quality

What we are looking for in our Senior Full Stack Engineer:

  • Proven experience (typically 5 10+ years) in full stack software engineering, ideally within data heavy, analytics, or SaaS environments
  • Strong backend development experience with Python and SQL (relational and/or analytical databases).
  • Experience working with cloud platforms, particularly Azure.
  • Experience working with modern data platforms such as Snowflake (or similar analytical warehouses).
  • Experience with .NET is desirable.
  • Strong frontend development experience using React and modern JavaScript/TypeScript.
  • Experience designing and building APIs and distributed systems.
  • Solid understanding of data engineering concepts, including data modelling, ETL/ELT pipelines, and performance optimisation.
  • Experience with CI/CD, containerised systems, and modern deployment workflows.
  • Familiarity with working alongside data science teams and deploying data-driven products.
  • Experience working in agile environments (Scrum/Kanban) with strong ownership of delivery.
  • Strong problem-solving skills and ability to work with complex, data-rich systems.
  • Excellent communication skills and ability to collaborate across technical and non-technical stakeholders.

What you ll get in return as our Senior Full Stack Engineer:

  • A central role in building industry-leading platforms such as Barb Ads Hub, NMO XCM, and Data Fusion.
  • Opportunity to work on complex, high-impact data and analytics products used across the media ecosystem.
  • Exposure to cutting-edge work in data integration, analytics, and measurement.
  • Hybrid working model (2 days per week in our Central London office).
  • A collaborative environment with strong engineering and data science expertise.
  • 25 days holiday rising to 30, private medical insurance, pension, season ticket loan and more.

Ready to help shape the next generation of RSMB s product portfolio?

If you feel you have the skills and experience to become a Senior Full Stack Engineer in this exciting role, then please click apply now We’d love to hear from you!

Please note that applicants must have the right to work in the UK. We are not accepting unsolicited agency applications for this role.

Product Engineer - Claude Code
Michael Page
London
Remote or hybrid
Mid - Senior
£100,000 - £120,000
RECENTLY POSTED

Our client is a Start-Up and is looking to hire a Product Engineer working with Claude Code. This is their first Engineering hire and you will own the AI Agent chain for the Platform Build. This role can be done mostly remote with odd travel to Central London.

Client Details

Our client is a Start-Up and is looking to hire a Product Engineer working with Claude Code. This is their first Engineering hire and you will own the AI Agent chain for the Platform Build. This role can be done mostly remote with odd travel to Central London.

Description

  • Design and develop new product features and functionalities in line with business objectives using Claude Code.
  • Participate in Product decisions - help shape what gets built, in what order and why
  • Own the translation of product intent into effective briefs that the factory can execute against.
  • Ensure all products meet technical and quality standards before release.
  • Analyse and troubleshoot product issues, implementing solutions to improve performance.
  • Define and maintain the target technical architecture for the platform, ensuring every Claude Code output aligns with it.
  • Continuously review architecture decisions as the codebase evolves
  • Own the documentation of the Product.
  • Guide Claude Code through effective prompting: precise context injection, constraint specification, and decomposition of complex work.
  • Know when to reject a plan entirely vs refine it vs let it run.
  • Review all code outputs for correctness, security, performance, and adherence to conventions.
  • Catch AI-specific failure patterns: hallucinated dependencies, plausible-but-wrong logic, over-engineering, pattern mimicry without understanding.
  • Monitor chain performance. When is fails, fix the chain.

Profile

Must haves:

  • Software Engineer background
  • Worked with Claude Code, Cursor or Devin
  • Strong communication skills

Nice to haves:

  • Start up experience

Job Offer

  • Benefits package to follow
Software Engineering Manager
Coburg Banks Limited
Multiple locations
Hybrid
Senior - Leader
Private salary
RECENTLY POSTED

Role: Software Engineering ManagerLocation: Peterborough Hybrid - 2 days per weekSalary: Competitive salary, plus bonus, car allowance, excellent pension, healthcare

This is a new role within this multinational organisation that fully embraces and actively encourages the adoption the latest tech.
We are looking for an experienced software engineering manager, development manager or lead developer that is as happy leading a small team as much as coding and leading projects.
This is a hands-on role, so we are looking for coding skills in JavaScript and a good grasp of Azure.
You will have a keen interest in AI technologies and how to incorporate them in business systems and applications.

What are we looking for:

  • Development team management and leadership experience, planning, sprints, mentoring, support etc
  • Has worked within a Microsoft Azure Development role (Web Apps, Functions, Databases)
  • Decent knowledge of Microsoft 365 products, SharePoint, Teams, Office, Administration
  • Web development skills, HTML, CSS, JavaScript, React, REST APIs, Node.
  • Any AI, LLM & chatbot exposure would be very welcome
  • Experience of working within Source Control & Agile Practices (Azure DevOps)
  • Able to implement IT Security best practices and improvements.
  • Commutable to Peterborough - two days per week on site.

This is a great opportunity to join and lead a fantastic team that are providing highly innovative and unique solutions to a global business using the latest technologies.Coburg Banks Limited is acting as an Employment Agency in relation to this vacancy.

Java Software Engineer
Sanderson Recruitment
London
Remote or hybrid
Mid - Senior
£510/day
RECENTLY POSTED
+7

Java Developer - multiple roles

£510/day Inside IR-35

6 month contract

Active SC required

Remote with occasional travel to London for client meetings only - expensable

We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. You’ll work in multidisciplinary teams delivering secure, reliable and scalable systems. The role is hands-on and focused on building high quality software using modern engineering practices.

What you’ll do

You’ll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You’ll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. You’ll contribute to CI/CD pipelines, ensure non-functional requirements are met and collaborate with colleagues across engineering, analysis and design.

Essential experience

  • Java and Spring Boot
  • Building and maintaining microservice based systems
  • Postgres or other relational SQL databases
  • Test-driven development (JUnit, Mockito or similar)
  • Docker and containerisation
  • CI/CD pipelines (Jenkins or similar)
  • Working in agile, multi-disciplinary teams

Desirable experience

  • Kafka
  • Liquibase or similar migration tooling
  • Swagger/OpenAPI
  • Gradle
  • React
  • TypeScript

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.

Developer Experience (DevEx) Engineer
Lorien
London
In office
Mid - Senior
Private salary
RECENTLY POSTED
TECH-AGNOSTIC ROLE

Location: London

We’re looking for a DevEx Engineer to boost the productivity, efficiency and overall experience of our engineering teams. You’ll design tools, enhance workflows and champion best practices to ensure developers can build, test and ship software faster and more reliably.

What you’ll be doing

  • Building internal tools, services and libraries to streamline developer workflows
  • Optimising CI/CD pipelines for speed, reliability and simplicity
  • Identifying engineering pain points and automating manual processes
  • Improving developer documentation, onboarding guides and internal wikis
  • Championing best practices in testing, code quality and deployment
  • Monitoring build times, test reliability and other developer feedback loops
  • Supporting internal development and test environments
  • Promoting a developer-first culture across engineering and product

What we’re looking for

Top skills (in order of priority):

  1. Background in software engineering/DevOps/platform engineering
  2. Strong programming skills (any modern language)
  3. Experience with CI/CD tooling

Essential:

  • Familiarity with containers/orchestration (Docker/Kubernetes)
  • Excellent communication and collaboration skills
  • Experience improving developer workflows or engineering processes

Nice to have:

  • Experience with developer portals or internal platforms
  • Observability tooling knowledge
  • Infrastructure-as-Code experience
  • Experience improving DX in monorepos or microservices environments

Why join?

  • Shape engineering excellence across the organisation
  • Drive real improvements to developer speed, quality and satisfaction
  • Work closely with high-performing product and engineering teams

Want to make a measurable impact on how developers build and deliver software? Apply now.

Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.

Senior Solutions Developer (MS Power Platforms)
PHOENIX COMMUNITY HOUSING
London
In office
Senior
£66,590
RECENTLY POSTED

Phoenix Community Housing is looking for a hands-on Solutions Developer to develop and maintain complex solutions that digitise, automate, and enable the integration of existing processes in line with our business needs. We are looking for someone who can transform business requirements into the best possible business solutions. Someone who can build end-to-end workflows, including integration with other MS services and third-party solutions. Are you able to design and build-out data structures, able to translate the operational requirements into robust solutions? Technically, you should be competent in writing, deciphering and manipulating code including JSON and PowerFX. Python and JavaScript would be advantageous here. If you have in-depth understanding of APIs in tandem with Power Automate – able to create dataflows and custom connectors – then this could be a role that would suit your ability, and we would love to hear from you. The application deadline for the role is Noon on Thursday7 May with interviews scheduled in person on Friday, 15 May. About Phoenix Community Housing Phoenix is a housing organisation with a difference. We’re led by our residents, with a tenant as our Chair and with residents as the largest group on our Board. Some housing associations talk about resident involvement. We live and breathe it every day. We believe this is our core strength and it’s helped us achieve a wide range of accolades and awards.  We’re based in south Lewisham, London, and are proud to be building new homes in our area. We’ve grown as a housing association, taking on the management of 1,500 more homes in late 2021 to bring our total number of homes to around 7,800. Our new Corporate Plan will help us deliver on our vision of ‘together building a better future for our Phoenix Community’, supported by strategies to refresh our approach to resident involvement, customer service, sustainability and ensuring that all residents can enjoy good quality, safe and affordable homes. Our big ambitions apply to our staff too. We are pleased to offer a generous benefits package, including our wellbeing programme, comprehensive learning and development and a culture of employee involvement.  If you think you’re the right person to help us make the next stage of our journey, then we’d love to hear from you. We strongly believe in a work-life balance so we’d be pleased to talk about part-time flexible working and job-sharing options. Phoenix is committed to safeguarding and promoting the welfare of vulnerable groups, and we expect all staff and volunteers to share this commitment. 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.

Analyst Developer – Leading Alternative Investment Business - Python/React/Azure
Finshore Partners
London
Hybrid
Mid - Senior
Private salary

Analyst Developer – Leading Alternative Investment Business - Python/React/Azure Join a Multi-Asset Investment Platform Driving Technology Transformation A highly respected alternative investment business is seeking an Analyst Developer to join its Investment Technology team. The firm manages a large, diversified multi-asset portfolio spanning public and private markets, including equities, real estate, credit, private equity, venture capital, and alternative strategies. The business operates a hybrid investment model, combining internal portfolio management (including derivatives-based strategies and direct investments) with external manager allocations. This provides a uniquely broad investment landscape and close interaction between technology and front office teams. As part of a major transformation programme, the firm is building a modern, cloud-native investment technology stack to support all asset classes and business functions. This role offers the opportunity to play a key part in shaping that platform. The Role This is a hybrid Analyst Developer position, combining hands-on software engineering with business-facing analysis. You will work directly with investment, operations, and finance teams to design and deliver solutions that support portfolio management, risk, and data workflows. The role suits someone who enjoys translating complex investment requirements into scalable technical solutions—and wants genuine front office exposure. Key Responsibilities 1. Develop, enhance, and support business-critical investment systems 2. Build in-house applications and integrate vendor platforms 3. Partner with front office and business teams to gather and define requirements 4. Design and implement scalable, cloud-based solutions 5. Develop event-driven systems and ETL/data workflows 6. Own testing processes including test plans, test cases, and UAT 7. Document systems, processes, and target operating models 8. Collaborate with senior technology leadership on architecture and delivery 9. Contribute to large-scale investment platform transformation initiatives Technology Environment 1. Python (core backend development) 2. React (front-end development) 3. Cloud & Data Platforms (e.g. Microsoft Fabric, Snowflake or similar) 4. Event-driven architectures & ETL pipelines 5. CI/CD and modern DevOps practices Your Profile Essential: 1. 3–4+ years’ experience in Python development 2. Strong front-end experience with React 3. Experience with event-driven architectures and data pipelines 4. Exposure to cloud platforms and modern software design 5. Experience with CI/CD and release processes 6. Strong understanding of investment workflows and systems 7. Prior experience working with front office stakeholders (buy-side preferred) 8. Ability to gather and translate complex business requirements (e.g. risk, valuation, TAA, forecasting) 9. Strong documentation and process modelling capability Desirable: 1. Agile delivery experience 2. Experience with Microsoft Fabric 3. CFA / CQF / CAIA (or interest in pursuing) Why Apply? 1. Direct exposure to front office investment teams 2. Work across a broad, multi-asset investment platform 3. Opportunity to shape a next-generation technology stack 4. High ownership and visibility across projects 5. Collaborative, flat environment with strong technical leadership Working Environment & Benefits 1. Hybrid working 2. Competitive salary and benefits package 3. Strong work-life balance and flexible culture Interested? Apply now for a confidential discussion

Productivity and Tooling Java Developer - Assistant Vice President - Citi
Citi
London
Hybrid
Mid - Senior
Private salary
+3

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.

Senior Java Engineer - Full Stack, Vice President - Citi
Citi
London
Hybrid
Senior
Private salary

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.

Full-Stack Senior Software Engineer, GenAI Data Products and Platform (VP) - Citi
Citi
London
Hybrid
Leader
Private salary
+6

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.

Senior Software Engineer
Hyre AI Limited
London
Hybrid
Senior
£75,000 - £95,000

Senior Software Engineer | Start-up | Fintech | London About the Company Hyre AI is partnering with a fast-growing, well-funded fintech startup building critical infrastructure for modern payment systems. This is a business focused on one of the most pressing challenges in financial services today: helping institutions better understand and assess transactions in real time, reducing fraud, preventing scams, and enabling safer, faster payments without adding friction for genuine users. Their platform sits at the intersection of data, intelligence, and decisioning; combining real-time analysis, multiple data sources, and adaptive systems to bring greater clarity to complex payment journeys. They’ve already gained strong traction with major financial institutions and are now scaling both product and engineering. As part of that growth, they’re hiring a Senior Software Engineer to join a high-calibre team working across backend systems, infrastructure, and product. About the Role As a Software Engineer, you’ll play a key role in building and scaling the core systems behind the platform. This is not a narrow feature delivery role. You’ll be working on backend services, APIs, and infrastructure that power real-time decision-making systems in a high-stakes environment. The work spans backend engineering, cloud infrastructure, and product development; ideal for someone who enjoys solving complex problems with real-world impact. You’ll be working on \* Building and maintaining high-performance backend services using Python \* Developing and integrating APIs that support real-time transaction analysis \* Contributing to scalable cloud infrastructure using GCP and Terraform \* Collaborating with front-end engineers to deliver user-facing features (TypeScript, React) \* Optimising data storage and query performance across SQL-based systems \* Improving system reliability, performance, and observability \* Working closely with product and engineering teams to ship meaningful features quickly This is the kind of role where you’ll gain strong ownership and exposure to both product and system design. Required Skills \* 4+ years of professional experience in software engineering \* Strong experience with Python, particularly in backend development \* Experience with TypeScript and/or React is beneficial \* Familiarity with cloud platforms (ideally GCP) and infrastructure as code (Terraform) \* Solid understanding of relational databases and SQL \* A proactive, problem-solving mindset and ability to work in fast-moving environments \* Curiosity, ownership, and a desire to build scalable, well-engineered systems Nice to Have \* Experience within fintech, payments, or data-heavy environments \* Exposure to microservices architecture and containerisation (Docker/Kubernetes) \* Experience with CI/CD pipelines and testing frameworks \* Awareness of security best practices in modern software development Compensation package \* Equity options \* Hybrid working (London-based, 3+ days in office) \* The opportunity to work closely with a high-performing, early-stage team Why Join This is a chance to work on a genuinely important problem with real-world impact. You’ll be joining a company tackling the growing complexity of modern payments; helping financial institutions better detect risk, reduce fraud, and build more intelligent transaction systems. If you’re looking to deepen your technical skills, work closely with experienced founders, and contribute to a product at an early and high-growth stage, this is a strong opportunity

Frequently asked questions
London offers a wide range of Full Stack Engineer positions across various industries, including finance, tech startups, healthcare, and e-commerce. Roles vary from entry-level to senior positions, often requiring experience with popular front-end and back-end technologies.
Commonly required skills include proficiency in JavaScript frameworks like React or Angular, back-end technologies such as Node.js, Python, or Java, experience with databases like SQL or NoSQL, and knowledge of cloud platforms such as AWS or Azure.
You can create a profile on our platform, upload your CV, and search for Full Stack Engineer roles in London using our filters. Once you find suitable jobs, you can apply directly through the job board with a single click.
Yes, many employers in London offer remote or hybrid working options for Full Stack Engineers. You can filter your job search by location or work type to find roles that suit your preferences.
Salaries for Full Stack Engineers in London vary based on experience and company size but generally range from £45,000 to £90,000 per year. Senior or specialized roles can offer higher compensation.