full stack javascript engineer jobs in London

La Fosse Associates is seeking a Senior Full Stack Software Engineer to own a production SaaS platform and help shape product strategy in a London hybrid setting. You will design and scale full-stack apps using TypeScript, React, Next.js, Go and Python on AWS, while building AI-powered features and AI tooling for enterprise customers.The role focuses on...

Lendable is seeking a full-stack Python engineer to join the Central Operations team. You will own web applications and automations across Cards, Loans and Motor, shipping features used daily by Ops teams at scale.Ideal candidates have strong Python web experience (FastAPI/Django/Flask), JS/TS with React, and interest in Generative AI. Hybrid work model with...

Perci Health, the UK’s largest virtual cancer clinic, seeks a Senior Full-Stack Engineer to advance a live platform used by patients. You will help shift how the platform is built, embracing AI-assisted coding, reuse over rewrite, and a strong focus on safety, testing, and regulatory compliance.This is a remote-first, high-impact engineering role. You will...

Burendo is recruiting an experienced Full Stack Engineer to operate and improve production systems, delivering small changes, incident response, and ongoing platform reliability improvements. You will join an L2/L3 managed service team supporting critical applications across multiple technologies and clouds, with on-call duties and technical...

Alto Software Group is seeking a software engineer for a 12-month maternity cover, working 2 days per week in our London HQ. The role involves shaping a dual-stack architecture (C#, TypeScript) with AI-enabled development and AWS services.You’ll collaborate with product teams to design and deliver features end-to-end, balancing speed and quality in a...

A tech recruitment firm based in London is seeking a Senior Full Stack Engineer with experience in Python and modern frontend frameworks like React and TypeScript. In this hybrid role, the engineer will design backend systems, create scalable frontend architecture, and integrate complex systems. The ideal candidate is a strong communicator who enjoys...

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...

Python Full Stack Product Engineer | Elite Start-UpBuild great products. Solve interesting problems. Make an impact.An ambitious start-up is looking for an exceptional Python Full Stack Engineer to join a small, highly talented team. You’ll help shape and develop an exciting product using Python, TypeScript and React, with the opportunity to take...

Sreeyam Soft Pvt Ltd is searching for a Senior Full Stack Developer to lead the development of their flagship enterprise client platform, catering to FTSE 250 customers. The role requires 5+ years of experience and a proven record in software engineering and product delivery.The ideal candidate will mentor a team of engineers and work collaboratively with...

A leading recruitment agency is seeking a Senior Full Stack Engineer for a 12-month remote contract. The ideal candidate has at least 4 years of experience in Python and Flask, along with a strong grasp of SQL databases. Responsibilities include architecting backend services and building responsive front-end interfaces. This role involves mentoring junior...

IFS is seeking a senior software engineer to design, build, and own scalable cloud-native systems. You will work across the stack, shaping API-first architectures and AI-enabled features that drive sustainability initiatives and ESG data capabilities.You will lead technical discussions, mentor engineers, and partner with Product, Design, AI, and Platform...

Spotify is seeking a Senior Fullstack Engineer to join Groove, a platform that enables planning, collaboration, and execution across the company. You will build end-to-end features across frontend and backend, using React, TypeScript, Java, GraphQL, PostgreSQL, and Google Kubernetes Engine (GKE).You will work with product managers and designers to translate...

TechTree is seeking a Founding Engineer to build end-to-end features in London, joining an in-office team shaping an AI-driven recruitment platform. You’ll own major components from concept to production and collaborate directly with the founders.You’ll work across frontend, backend, and infrastructure, taking ownership in a fast-paced startup....

Core ResponsibilitiesLead the design, architecture, and implementation of scalable APIs, services, and accessibility-first user interfacesDeliver AI-native features across both front-end and back-end, spanning carbon accounting, ESG data collection, and sustainability planning capabilitiesDrive the evolution of the platform into modular, event-driven,...

Conveo.ai is building an AI research platform used by global brands. We seek a Senior Product Engineer who owns the full stack from interface to infrastructure, shaping product direction with technical impact.You’ll lead frontend architecture in React/TypeScript, design robust APIs, and ship complete features including AI-powered capabilities on AWS/GCP,...

BNY is seeking a Senior Associate, Full-Stack Engineer in London. In this role, you will design and maintain backend services while collaborating on frontend development. Key responsibilities include delivering secure, scalable systems and contributing to performance enhancements.Required qualifications include proficiency in Java, knowledge of...

Trovix AI Ltd in London seeks a talented software engineer to build intuitive user interfaces and production-grade APIs for our AI-driven products, collaborating closely with our AI and product teams and regulated industry clients.You will join a small, fast-moving team delivering features used daily by law firms, insurers and financial services firms, with...

Fantastic opportunity to join a world class Investment Management business. Send your CV for more info! We are seeking a highly experienced Senior Full Stack Engineer to contribute to the design, development and optimisation of front office applications. This role works closely with the front office, as such the role will require collaborating directly with...

Fnality is building the future of financial market infrastructure – creating regulated, blockchain-based payment systems to power tomorrow’s wholesale banking ecosystem. Backed by leading global banks and operating at the intersection of technology, finance, and regulation, we are powering the future of finance, together. There are no precedents for what...

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount...