full stack javascript engineer jobs in London

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...

Harnham - Data and Analytics Recruitment is seeking a Senior Full Stack Engineer to join a hybrid London-based team. You will build AI agents, develop prototypes, and modernise legacy systems, delivering measurable results across the data platforms.You’ll work with Python, TypeScript, and SQL in a fast-paced environment, collaborating with senior...

Oho Group in London is seeking a skilled Full-Stack + Agentic AI Engineer to join a growing startup. You will own systems end-to-end, from backend services to frontend features, and directly influence real-world infrastructure.With 3+ years in full-stack and agentic AI, you will work with founders to ship production-grade software, contributing to...

Descrial is hiring Full-Stack Engineers to build end-to-end software for confidential financial data. You will work with TypeScript/React on the frontend, Python on the backend (FastAPI or Django) and PostgreSQL on AWS.This cohort spans nine engineers across full-stack, front-end and back-end roles in King’s Cross, London. You’ll own features from schema...

Voop is building the world's first safe mobile platform. As a Fullstack Engineer, you’ll develop and scale our platform across web and mobile, collaborating with Nick Pasha-Gubbins (Co-Founder & CTO) and the engineering team on architecture and features for Voop for Care, Schools, and Parents.You will work with modern stack: Typescript, React, React...

Morgansholding is looking for an experienced full-stack engineer to build and own the web platforms behind Morgan’s Grocer in the UK. You’ll ship the online storefront, APIs, and internal tools, focusing on performance and reliability for high-traffic shopping and delivery.You’ll work across frontend (React/Next.js/Vue) and backend (Node.js, Python,...

BigHand is seeking a Full-Stack Engineer to design and ship Matter Pricing products post-acquisition. You will work on features end-to-end, balancing UI/UX with robust backend services and agentic AI capabilities.The role demands at least 3 years of commercial experience, strong TS/React skills, and a STEM background. You will operate in a hybrid setup with...

Project Global Limited is seeking a Senior Software Developer with Active SC Clearance to join our client’s team in the UK. The role is hybrid with office attendance 1-2 days per week in London, Newcastle, Leeds, Manchester, Blackpool or Sheffield, and remote work within the UK.The contract is 12 months and day rate is competitive. You will work in a...

Miller Maxwell Ltd. is seeking a Full Stack QA Engineer to join a front-to-back trading software team. You will work across manual and automation testing, shaping test strategies and owning quality across the full lifecycle of complex trading workflows.This role requires strong hands-on testing, automation expertise with Playwright and TypeScript, and the...

ScienceMachine in London is seeking a Senior Full Stack Engineer to join the founding team, owning both product and infrastructure development. You will work across frontend interfaces used by scientists, API design, and deployment pipelines in a fast-moving environment.You will design and build robust backend services with Python, manage Terraform-driven...

Belitsoft is seeking a Senior .NET Engineer in Greater London. The role involves writing modular and scalable code, ensuring code quality, and collaborating with a diverse team. Candidates should have strong proficiency in PHP (Laravel), React, and experience with PostgreSQL and Docker, along with the ability to deploy solutions to AWS. This position fosters...

Capgemini is hiring a Senior Full Stack Engineer with a focus on AI/ML to lead by example and deliver high-quality software. The role blends hands-on development with stakeholder partnership and setting engineering standards.The position emphasizes frontend ReactJS/TypeScript, strong backend API design, DevOps, and practical AI feature integration. It offers...

Unibuddy is seeking a mid-level software engineer to work across the full stack on the Unibuddy platform, including web, native, and backend components. You will contribute to Chat, Assistant, and Intelligence products to help students and universities engage effectively.You will work with a modern stack (NestJS, Typescript, Python, GraphQL, MongoDB, AWS)...

Creditstar Group is a rapidly growing international consumer finance company seeking a Full Stack Engineer. You will participate in product and platform development, collaborating with the revolving credit product team to build features, frameworks, and scalable backend systems as part of a fully remote team.Ideal candidates have extensive PHP experience,...

A cutting-edge technology company based in the UK is seeking a Senior / Lead Fullstack Engineer to create innovative systems within global enterprises. In this role, you will be designing production-grade systems that handle complex, unstructured data, while taking full ownership of your projects. If you thrive in a high-pressure environment and want to...

HCLTech is seeking a Senior Java Engineer to strengthen its RMS Trade Processing platform. You will design and deliver scalable full-stack solutions using Java, Spring Boot, Angular, and React, contributing across backend and frontend components in a business-critical system.The role requires 8+ years of enterprise software experience, expertise in RESTful...

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...

Mountain Warehouse is seeking technically strong senior developers to join our development teams across Web Development, Customer Experience & Service, and Buyers & Merchandising. The role involves working on a mix of internal services and public-facing apps using C#, SQL Server, Next.js, React & TypeScript, with monoliths and microservices in cloud,...

SmartChoice International GCC in London is seeking Forward Deployed Engineers to own features end-to-end, working directly with customers to translate complex workflows into scalable software solutions.You will build across the full stack, including frontend, backend, data models and AI/model layers, and ship production software quickly while iterating on...

Neo4j in London is seeking a software engineer with deep frontend expertise to join our Graph Engine team. React will be your core strength, but this is a genuinely full-stack role spanning backend, cloud, and connectivity.You'll guide the UI's technical direction, collaborate with engineers across the stack, and mentor others as you contribute from frontend...