senior java full stack developer jobs in London

IFS is seeking a Senior Full Stack Engineer to shape and deliver scalable, cloud-based Industrial AI solutions that create meaningful outcomes for customers and the business. You will provide technical leadership across front-end and back-end, influence architectural decisions, and help evolve the platform into a secure, observable product portfolio.You will...

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,...

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...

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,...

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,...

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,...

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...

# 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,...

A technology startup focused on fitness is looking for a Senior Full Stack Engineer to join their Growth Engineering team. This role involves architecting and building user journeys to enhance conversion rates, collaborating with various teams, and implementing tracking for user behavior insights. The ideal candidate will have strong TypeScript and...

Mowt is seeking a senior engineer to help build the next generation of our platform. You’ll own end-to-end development across Laravel, MySQL, React web, and React Native mobile, handling payment data at scale.You'll shape architecture, optimize data pipelines on AWS Lambda, and collaborate closely with design to deliver data-rich experiences using Tailwind...

Starling Bank is seeking a Full Stack Engineer (ML Ops) in London. Join a fast-moving fintech that values innovation, collaboration and ownership in a hybrid working setup.You will contribute across backend and frontend layers using Java, React and AWS, helping to build scalable services and data-driven features for a modern digital bank. Our team emphasizes...

Senior Full Stack C# Developer | Contract| Inside IR35 | LondonOur investment banking clients is seeking a Senior Full Stack Developer to join its Front Office FX technology team, building and enhancing business-critical systems used across London, New York and Singapore.This role sits within the FX Deal Capture team and is ideal for an experienced engineer...

Elastic is seeking a Senior Software Engineer for the Streams UI team to shape and enhance the user interface. You will work on Fleet for Elastic Agent in Kibana and on Streams for log data handling, ingesting, organizing, parsing, enriching, and setting retention.You’ll collaborate with engineers and designers to deliver intuitive UI components and ensure...

Full Stack Developer up to £90,000 Remote Pearson Carter are currently working with a successful and growing organisation who are investing heavily in their in-house technology team. They are looking to add a technically strong Full Stack Developer to their Web Development team, with a particular focus on modern Next.js and React applications. This is an...

RedRock Consulting Ltd seeks an experienced senior full-stack contractor to own end‑to‑end features across the stack. You will craft React/TypeScript front ends, design Python/FastAPI or Node.js back ends, and shape data with SQL/NoSQL stores while ensuring secure, well-tested code.You’ll ship via GitHub Actions CI/CD, run in containerised...