senior java full stack developer jobs in London

Maxwell Bond is seeking a Senior Full Stack Developer to join a fast-moving HealthTech team building a new customer-facing platform using C#/.NET, React and Azure. You'll own significant parts of the backend and frontend, contribute to architecture decisions, and ship deliverables with an API-first approach.You'll work in a remote-first environment with...

FTSE Russell (LSEG) is building next-generation distribution capabilities that deliver index data to the global financial community — across APIs, cloud platforms, and modern data delivery channels We’re looking for a hands‑on Senior Engineer to design and scale the systems that power this distribution — enabling reliable, secure, and...

Cato Networks is seeking a Senior Software Engineer to join the secured access engineering team. You will design and build user-facing, product-grade web security solutions that protect customers' online presence, alongside internal infrastructure platforms used across the company.You will take a leading role in designing complex architectures and delivering...

Arva AI is revolutionising financial crime intelligence with cutting-edge AI Agents. As a Senior Full-Stack Product Engineer, you will build and iterate on full-stack features of our AI-powered platform, including document fraud detection and web due diligence, and develop systems to automate testing and model improvements.You will work across front-end,...

Winton is seeking a Senior Full Stack Developer to deliver end-to-end post-trade and reporting software. You will collaborate directly with operations, fund accounting and senior management, owning solutions from requirements gathering to deployment.The role focuses on C#/.NET backend, Angular/TypeScript frontend, and data technologies (MSSQL, PostgreSQL) in...

Hayfin Capital Management LLP is hiring a Full-Stack Engineer to build our analytics workbench, enabling data-driven analysis and decision making across the business. You will own the in-house analytics platform, work across the full stack, and coordinate with an offshore vendor team to ensure timely delivery.The role emphasizes hands-on enterprise software...

Grid Dynamics in London is seeking a Senior Kotlin & TypeScript Developer to join a high-performing engineering team. This hands-on full-stack role focuses on trading technology, spanning Kotlin backend services and TypeScript/React frontend applications to support a sophisticated trade store platform.The ideal candidate enjoys working across the stack,...

Flok Health is seeking driven software engineers to join its in-person Cambridge team. You’ll build new features end-to-end (full-stack with frontend focus) and help scale consumer applications in a healthcare context.You’ll collaborate with product/UX, mentor junior teammates, and contribute to the technical roadmap while delivering reliable,...

Runna is hiring for a talented engineer to join the Train Team in London. You’ll work across frontend and backend, collaborating with modelling/AI teams to integrate features into Runna’s training platform for runners.The role focuses on building scalable, end-to-end experiences in a fast-paced environment. You’ll partner with founders and leadership,...

Treefera is hiring a Senior Full Stack Engineer to strengthen delivery capacity in Environmental Intelligence. You will build across UI, API and pipelines, combining Python with other languages as needed.You’ll work to turn ambiguous ideas into shipped software within existing platform constraints, while improving how the team builds, documents and scales....

Harvey Nash Group is seeking a highly experienced Senior Full Stack Engineer to design, develop and optimise front office applications in a world-class investment management environment. You will work closely with portfolio managers and product owners to deliver robust, scalable software.The role requires strong frontend and backend expertise, mentoring...

sees.ai is building autonomous drone technology to change how infrastructure is inspected and managed. We deliver large-scale autonomous inspection programmes for National Grid and other operators, backed by Boeing and with a founding team from Apple, CERN and McLaren F1.We solve hard problems in autonomy, aviation and regulation and now tackle scale with...

Broadridge is seeking a Senior Developer to join the AI Enablement Team in London. The role focuses on implementing and designing GenAI-enabled solutions across the organization, contributing to platform capabilities and cutting-edge AI projects.You will lead development, technical guidance, code reviews, testing, and cross-functional collaboration to...

A technology company based in the United Kingdom is seeking a talented Full Stack Software Engineer to build cutting-edge software solutions. This role involves developing and optimizing APIs, creating responsive frontends, and maintaining databases. The ideal candidate will have proven experience in API development and database management, along with a...

Welocity is seeking a Senior Full Stack Developer to join our London team. You will design, develop, and maintain scalable, high-quality software using Next.js, PostgreSQL, and AWS Lambda.You will lead projects, mentor junior developers, and collaborate across teams to deliver robust solutions. We value innovation and proactive problem-solving, with a focus...

Elsevier in the United Kingdom is seeking a software engineer to deliver secure, scalable software and cloud infrastructure in production. You will design, build, and deploy production-ready solutions in AWS, with CI/CD, monitoring, and incident response as part of a cross-functional Agile team.You will mentor colleagues, contribute to engineering standards,...

AtkinsRéalis Nuclear is seeking a Senior Full Stack Engineer to shape and develop XR products that connect field teams with project information, digital work packs, asset data and spatial models. You will balance hands-on development with technical leadership across web, cloud, APIs, and data workflows.You'll work with React, JavaScript, TypeScript,...

EngineersOfAI is seeking a Senior Engineer who will work on developing solutions for our banking platform, collaborating with diverse teams. The role offers flexible working, primarily based in London but open to candidates across the UK.As a full-stack engineer, you will contribute to various initiatives, with no formal qualifications required, just a...

LexisNexis Risk Solutions is seeking a senior software engineer to act as the technical anchor for a cross-functional Healthcare squad. You will balance hands-on work with architectural influence across Java/React applications and Python data pipelines, while mentoring peers and guiding delivery.You will shape design direction, review code, drive release...

# Senior Full Stack EngineerLondon, United Kingdom · HybridEngineering · Full-timeApply for this job## About the roleWe're building an advertising management platform that helps businesses optimise their social campaigns, with a focus on Meta (Facebook) ads and seamless bulk ad launching. This role is based in London.* Stack: Next.js, React, Tailwind CSS,...