senior java full stack developer jobs in London

Humaans is seeking a skilled full‑stack engineer to help shape and deliver high‑quality SaaS features. You will work across backend and frontend in a fast-paced environment, collaborating closely with product managers and designers to launch customer‑facing improvements.You will contribute to architecture planning, write robust backend in...

DISCO is hiring a Senior Full Stack Engineer in London. You will lead design and implementation of scalable features, build secure APIs, and influence architecture alongside a small, high-impact team.The role requires deep Python/Django experience, REST API design, React.js expertise, and strong security sense. Hybrid work includes four days remote and one...

Hesta Health is hiring a Senior Full-Stack Engineer to own and evolve the core platform as we iterate toward product-market fit. You will work with founders, product, and clinical teams to ship features, strengthen foundations for scalable care pathways, and integrate AI capabilities that improve clinical operations.You will be a pragmatic builder who...

Jobtailor is seeking a senior software engineer to design, build and ship features end-to-end across web, mobile and backend. You will own meaningful product components and improve reliability while mentoring juniors and collaborating with PMs and designers.You’ll work with PHP or Go on the backend and TypeScript across the stack, applying strong software...

A leading HealthTech company in London seeks a Senior Full Stack Engineer to develop scalable, cloud-native products. The ideal candidate has over 5 years of experience with React, Typescript, Node.js, and AWS, working in data-sensitive environments. The role involves mentoring engineers and ensuring high engineering standards. Offers a salary up to £90k...

Robinhood in London is seeking a Senior Full-Stack Software Engineer to own end-to-end features across Prime surface, from backend services to frontend and backoffice screens. You will lead engineers through ambiguous problems, set the technical bar for resilience, and own work across settlement, onboarding, reporting, and operations tooling.This role...

A leading financial services firm in Greater London is looking for a Senior Lead Software Engineer to join an agile team dedicated to delivering high-quality technology products. This role requires expertise in full stack development, particularly in React and TypeScript, as well as experience in cloud environments. The ideal candidate will drive technical...

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of...

Preply is hiring a Senior II Full Stack Engineer to drive backend systems in Python/Django and frontend in React/Typescript. You will lead complex initiatives, mentor engineers, and partner with product, data, and UX to deliver measurable impact at scale.This is a remote, internationally oriented role with opportunities across 175 countries. You’ll...

Robinhood is hiring a Senior Full-Stack Software Engineer in London. You will own the design and end-to-end delivery of features across the Prime surface—from backend services to frontend and backoffice screens.You’ll mentor teammates and push for robust, fault-tolerant systems with strong design discipline. Based in our London office with in-person...

Senior Full-Stack Software Engineer, (Forward Deployed), GPSLondon, UKReady to Apply?Join the team shaping the future of AI at Scale.Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of:Creating custom AI applications that will impact...

Conveo is hiring a Senior Product Engineer who shapes product direction by starting from user problems and owning everything from concept to deployment. You will own the full stack, lead frontend architecture in React/TypeScript, and ship complete features end-to-end, including AI-powered capabilities built on LLM APIs.You will engage with customers weekly...

We power people’s progress. At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact. We’ve just reached unicorn status with a $150M...

Calyptus is looking for a Senior Full Stack Engineer in the UK to lead the technical architecture of their platform. Responsibilities include owning the full stack from React Native to Django API and managing the engineering team. Applicants should have 7+ years of experience, strong skills in React Native and Python/Django, and the ability to architect...

Fitch Ratings in London is seeking a Senior Software Engineer to lead and shape front-to-back applications within Ratings Technology. You will craft mission-critical full-stack solutions and influence architectural direction.The role emphasizes AI exploration, collaboration with product teams, and delivering high-quality user experiences at scale, with...

Fastbreak AI is seeking a Senior Full Stack Engineer to design and ship high-performance web apps using React/Next.js on the frontend and Node.js/Express on the backend. You’ll own architectural decisions, mentor peers, and partner with product managers to shape requirements end-to-end.You won’t just work from a queue; you’ll decide what to build, how,...

Senior Full-Stack Software Engineer, (Forward Deployed), GPSLondon, UKScale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of:Creating custom AI applications that will impact millions of citizensGenerating high-quality training data for...

Preply is seeking a Senior II Full-Stack Engineer (backend heavy) in London. You will work in a hybrid, engineering-focused environment to deliver scalable backend systems with Python/Django and frontend in React/TypeScript.The role emphasizes technical leadership, mentorship, and data-driven product development within a fast-growing EdTech platform that...

Conveo is seeking a Senior Product Engineer to own the full stack, from the interface to the cloud infrastructure. You’ll lead frontend architecture in React/TypeScript, design robust APIs, and deliver AI-powered features built on LLM APIs.You’ll work closely with customers, shape product direction, and report to the CTO. The role blends hands-on coding...

Harvey Nash Group is seeking a Senior Full-Stack Engineer in London to co-lead architecture and build data-driven products for sales, account management, and customer success teams. You will work with Python, TypeScript, AWS, and Terraform across web portals, document generation, and cloud apps processing billions of records.You'll mentor teammates,...