full stack javascript engineer jobs in London

A leading AI technology company in London is seeking a Senior Full-Stack Software Engineer to develop innovative AI applications for the public sector. This role requires at least 5 years of engineering experience, specifically with React and cloud technologies. The position involves close collaboration with clients, ensuring high-quality application...

Lindus Health is seeking a software engineer to help power the next generation of clinical trials from our London office. The role blends frontend (TypeScript/React), backend (Python/Node.js/Postgres), and infrastructure (AWS) in a fast-moving, VC-backed startup.You’ll join a small, cross-functional team, work on the Citrus trial delivery platform, and...

A healthcare technology company in Greater London is looking for a Senior Full Stack Software Engineer proficient in TypeScript, React, and NodeJS. This role involves developing new features, maintaining the existing platform, and leveraging a product mindset to enhance user experiences. The position offers competitive compensation ranging from £78K to...

Warden AI Ltd. is seeking a Full-stack Product Engineer to build and evolve the core AI assurance platform. You will work across frontend development and backend services to transform complex audit workflows into reliable software customers trust.You will join an existing team, report to the CTO, and collaborate with product, data, and customer-facing teams....

United States Digital Space LLC is hiring a frontend-focused engineer to transform dense transfer-pricing data into clear, actionable interfaces. You will own the product look, feel and interactions, collaborating with our CTO, Lead Engineer and tax team.Expect to ship end-to-end features, from frontend visuals to backend data handling, with a strong...

True Talent Solutions Partners is seeking a mid-senior full-stack engineer to join a product engineering team building AI-powered software for certification, inspection, and compliance workflows. You will collaborate with customers and founders to turn real-world challenges into production-ready systems in Shoreditch, London.The role emphasizes shipping...

Runna is building the #1 training platform for runners. We hire a talented full-stack engineer to join a cross-functional squad and help evolve features across the stack, collaborating closely with product, design and other engineers.The role follows a flexible hybrid model with ~3 days on-site in London, UK, offering strong compensation and Strava-backed...

Praktika.ai seeks a Senior Full-Stack Engineer to own every web-facing surface — onboarding flows, landing pages, customer portals, web app and internal tools. This full-cycle role lets you shape product direction, run experiments, ship features end-to-end, and measure impact on conversion, retention, and learner experience.You’ll collaborate with...

We are looking for a Full-Stack Engineer to build the Eigent desktop and web application. You will own the front-end architecture of our AI agent platform — a React/Electron app that lets users orchestrate, monitor, and interact with AI agents in real time.ResponsibilitiesArchitect and build features across the React/Electron desktop app and Next.js web...

Morela is seeking an Embedded Full Stack Engineer for a 6-month initial contract, Outside IR35, based in London with hybrid work. The role involves building Python back-end services and a React/TypeScript front end, embedded within a client team and responsible for secure deployments and ongoing delivery across a cloud-based platform.You will work on a...

Wondersphere, a London-based branding and digital studio, is seeking a Senior Full-stack Developer to own the technical direction of sophisticated websites and digital platforms. You will collaborate with strategy and design teams to translate complex requirements into robust, scalable solutions.You'll lead development alongside a freelance Technical...

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...

Southern Manufacturing & Electronics 2025 is seeking Forward Deployed Engineers to lead AI deployments in factory settings. This full-stack role spans engaging customers, scoping problems, deploying solutions and ensuring the system works in live environments.You will collaborate with backend, frontend and research teams to ship fixes, optimise imagery and...

Senior Software EngineerAbout TripadvisorThe Tripadvisor Group connects people to experiences worth sharing, and aims to be the world's most trusted source for travel and experiences. We leverage our brands, technology, and capabilities to connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for...

Harnham is seeking an Engineer to own software across front-end and back-end within an AI-first fintech environment. You will build customer-facing web applications and contribute to Kotlin/Spring backend services while integrating AI-driven workflows.Join a scale-up with Agile squads, delivering secure, scalable software and collaborating on APIs,...

Randstad Technologies Recruitment is seeking a hands-on Forward Deployed Engineer to join a fast-growing global team building an intelligent automation platform for enterprise finance operations (Contract-to-Cash). The role is remote (UK-based) on a 6-month initial contract, paying £60 per hour umbrella Inside IR35.You will bridge engineering and live...

Stantec Inc. is seeking a seasoned Senior Full Stack Developer to join our engineering team in the UK. You will balance robust Python backends with sophisticated frontends and AI-driven architectures.You will design and maintain scalable web apps, using Django or similar frameworks, and build dynamic interfaces with Angular, HTMX, and Alpine.js. A strong...

Job title: Full Stack Developer - Azure CloudContract: 12 monthsLocation: London - HybridStart Date: ASAPIR35: Inside IR35Sector: Public SectorWe are currently recruiting for an experienced Full Stack Developer to support a major Public Sector technology programme based in London.The successful candidate will work across the full application-development...

Full Stack Software DeveloperPermanentLocation: Home / London – 3 days a week onsiteSalary: £80,000 - £90,000 (+ benefits)Skills: JavaScript, React, Node.js, AWS, DV ClearanceWe are looking to recruit a DV Cleared Full Stack Developer for a leading technology consultancy. You will join an established engineering team delivering a secure, cloud-based...

We're putting together a talented team to build the #1 training platform for Runners We help everyday runners become outstanding by building an incredible app providing world‑class training, coaching and community for everyone, whether you're improving your 5k time or training for your first marathon. We’re growing extremely fast! In November 2023 we...