full-stack web developer jobs in London

We are working with a global financial services company that is rebuilding its international payments platform, operating within the Corporate Payments division. This organisation offers an exciting opportunity to contribute to cutting-edge financial technology in a dynamic environment. The Role - Own features end-to-end, from API and service...

Job OverviewRoleAI Full Stack Engineer (AI & ML Engineer)LocationFenchurch Street, LondonDurationOct 12, 2026 - Dec 15, 2026 (9 Weeks, 2 Days)Hours40 hours/weekRate291 PAYE / 388 UmbrellaCore Technical StackProgramming & APIs: Python, RESTful API development, JSON Schema, Pydantic.AI & LLMs: Gemini, OpenAI, Claude.Frameworks & Orchestration: Google ADK,...

Fin, now part of Salesforce, is on a mission to help businesses provide perfect customer experiences. Our AI Agent Fin is the highest-performing AI Customer Agent on the market today, enabling businesses to deliver impeccable, always-on customer support across the customer journey, from service, to sales, to ecommerce. Powered by our own AI models, Fin...

For an international organization in Geneva, Switzerland, we are urgently looking for a Full REMOTE Java Developer with +5 years of experience. As a Java XML Developer, you will develop new and expand existing web-based functionalities, in a manner that is compatible with the existing IT Platform and ensures Portal compliance. During the corona crisis,...

Elliott Moss Consulting Pte. Ltd. is seeking a highly motivated Full Stack Developer to join the Agile development team and deliver end-to-end cloud-native solutions. The candidate should design, develop, deploy, and support scalable applications using Node.js and React.js.Responsibilities include containerized deployments with Docker and AWS ECS (Fargate),...

WALT Labs in Greater London seeks a capable Full Stack Developer to build and ship the Companion product suite — an AI-powered automation and intelligence platform.You will implement Companion modules, AI agents, automation workflows, MCP server integrations, and ensure production-grade code with tests and security.Reporting to the VP of Product, you’ll...

Job Description Full Stack Engineer London N1 – Full Time – Hybrid – Salary Dependent on Experience Ready to revolutionize global logistics? Join Reelables and help us transform how the world tracks packages. We’re pioneering paper-thin smart shipping labels using Bluetooth and 5G to track millions of packages globally — and we’re building the...

About usEncord is the universal data layer for AI that helps 300+ AI teams train and run models on the right data. Our platform indexes, curates, annotates, and evaluates data across the full AI lifecycle, from development through production.Trusted by Woven by Toyota, AXA, UiPath, Zipline, and more. We're an ambitious team of 100+ working at the frontier of...

Senior Full Stack Software Engineer £100,000–£110,000 + benefits UK-based | Hybrid – London 2 days per week Certus Recruitment is working with an ambitious UK fintech building a regulated stablecoin and digital payments platform. We are looking for a Senior Software Engineer to join at an early stage and help build the application, financial...

Deerfoot Recruitment Solutions in the City of London seeks a skilled software professional to develop and maintain bespoke C#/.NET applications, with strong SQL Server/Oracle experience and front-end knowledge in JavaScript/React.You will work on greenfield projects in a fast-paced, collaborative team that values clear communication, code quality, and...

At the company, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in...

About UsTicket Tailor is committed to empowering a diverse range of event creators through simple and affordable ticketing. But that's not all, we're also on a mission to make sure that every single ticket sold has a positive impact on all stakeholders, our team, our planet and the communities we operate in. We call this "Growth on Purpose" and are proud to...

Description Hybrid: 2 days per week in our Tower Bridge office (Tuesdays and Thursdays) Uswitch At Uswitch, our goal is to be the UK’s favourite way to choose and manage home-life essentials - from broadband and mobiles to energy and insurance. As we continue to grow and expand our services, we are looking for talented individuals who share our passion for...

Senior Full Stack Engineer TryHackMe is a fast‑growing online cybersecurity training platform that makes learning and teaching cybersecurity easier through gamified exercises and challenges. With over 5 million community members, we’re expanding as an AI‑first company. Your role will involve everything from maintaining the current code base to...

The role This company builds an AI data-integration and analysis platform. They automate document processing and natural-language data retrieval for enterprise customers. Think highly sensitive financial environments, where SOC 2, ISO 27001, and GDPR are non-negotiable. They've secured significant funding from leading investors and are scaling rapidly....

Overview At Pairwise, we are a team of engineers, operators, and builders focused on enabling the next generation of technical talent to do their best work. We partner with leading technology companies to deliver high-performance engineering solutions across embedded systems, networking, semiconductors, and software. Our teams have contributed to some of the...

Are you passionate about driving innovative solutions in web development?Do you thrive on transforming complex requirements into seamless, user-friendly applications?About Team:Our dynamic Agile team is at the forefront of developing cutting-edge technology for the future of peer review in scientific discovery. We are creating an innovative peer review...

Humanoid is the first AI and robotics company in the UK, creating the world’s most advanced, reliable, commercially scalable, and safe humanoid robots. Our first humanoid robot HMND 01, is a next-gen labour automation unit, providing highly efficient services across various use cases, starting with industrial applications. We are looking for a...

At Improbable, we build and scale ambitious AI and Web3 ventures shaping the next generation of the internet. The Somnia Foundation, backed by Improbable, specialises in building and operating high-performance decentralised technology. Its EVM L1, launched in 2025, has been benchmarked as the fastest on the planet: at over 1 million ERC-20 transactions per...

About Volter Volter is a top-tier climate VC-backed B2B energy tech platform building the products that make clean, renewable power simple for businesses everywhere. The energy transition is a huge and vital opportunity, but it's currently too difficult for commercial & industrial companies to achieve. Historically, the energy industry has been too opaque,...