full stack javascript engineer jobs in London

A leading recruitment agency is looking for a Full Stack Developer to join a global law firm's Engineering team. The ideal candidate will have strong skills in HTML5, CSS3, and RESTful APIs, and will thrive in an Agile environment. Key responsibilities include building scalable solutions and collaborating with UX designers. This full-time position offers an...

Dex is seeking a founding-team capable full-stack engineer to build a platform that answers security questions once, with Python on the backend and React on the frontend. You will own the data model and UI, and work directly with the founder and customers to ship value.You will tackle evolving, complex problems across large environments, delivering...

JPMorgan Chase is seeking a Full Stack Software Engineer to join the Corporate Sector - Data Center Services. You will contribute to building secure, scalable technologies, delivering AI-enabled features, and ensuring high-quality production code within an agile team.The role emphasizes frontend Angular with NGRX, backend NodeJS, and collaboration across...

Heidi in London is seeking a Senior Full-Stack Engineer to own end-to-end features from database to browser, including the React interface, Python services, and the underlying data model. You’ll ship SaaS features for clinicians, balancing frontend performance with robust backend design.You’ll build fast interfaces in React/TypeScript/Next.js, design...

Grid Dynamics is seeking a versatile engineer to join a high-performing team building workflow automation platforms for a global investment banking environment. You will design, develop and deploy Java-based services, REST APIs and React frontends, collaborating with traders and operations to solve real business problems.You will work across Java, Node.js,...

Steven.com is building the operating system for the creator economy, and its ITO team is hiring to build products from zero to production across the full stack. You will move between existing products, beta products scaling up, and moonshots, turning ambiguous problems into scalable technical solutions.You will prototype fast, run experiments, iterate on...

Infused Solutions is seeking a Senior Full-Stack Engineer to join an early-stage AI startup in London, working four days per week in the office. You’ll own features across the stack, influence architecture, and help shape the product as the company scales.You’ll work with a small, high-performing team, using TypeScript, Node.js and React, and you’ll...

Bauer Media Outdoor UK is hiring a software engineer to sunset legacy systems and build a new platform for client bidding and real-time data on advertising spaces. You will focus on BA work with some FE work, using React, NodeJS, Typescript, Kubernetes, AWS and more.You will contribute to design, implementation, testing and deployment, shaping features...

OverviewFull Stack Software Engineer – Early-Stage HealthTech/FinTech - London. Permanent | Competitive Salary + Equity | Seed-Stage Startup | AI, FinTech, Healthcare.We are representing a well-funded, early-stage startup redefining financial visibility in the healthcare sector. Backed by reputable investors and founded by experienced operators, the...

83zero Ltd in the United Kingdom is seeking a Senior Java Full Stack Engineer with strong backend and frontend experience, plus proven leadership and client-facing skills to deliver enterprise digital solutions.Design and build Java/Spring Boot microservices and React UIs, mentor teams, collaborate with clients and stakeholders, and drive REST APIs, cloud,...

Volition in Central London is seeking a Full-Stack Software Engineer to design, develop and continually improve production systems used by real-world clients. The role requires a solid full-stack background with modern practices and strong API design capabilities.The ideal candidate has 3–10 years of experience, hands-on work with Next.js, TypeScript,...

About the Role HTS Assist is Hopper's agentic AI assistant for travel, resolving flight changes, cancellations, refunds, and bookings over chat and voice for some of the world's largest travel brands. We're looking for a senior full stack engineer to anchor this product, owning the realtime and voice layer end to end while building across React/TypeScript...

throxy is building an ambitious AI-powered dialing and data platform in London. We’re seeking experienced fullstack engineers to own end-to-end systems, including frontend and backend work with TS/React (Next.js). A CS degree or equivalent and UK-based relocation with visa sponsorship are required.Join a small, senior team shipping core infrastructure that...

Starling Bank in London, UK seeks a Full Stack Engineer (ML Ops) to join our data-driven fintech team. Build scalable services, REST APIs, and frontend with React/Redux, leveraging Java and AWS in a hybrid setup.The role offers a base salary of £70K–£110K, permanent contract, and hybrid working up to 2 remote days per week. Visa sponsorship is not...

EPAM Systems, Inc. in the United Kingdom is seeking a Lead Python Full-Stack Engineer (AI Integration) in a hybrid role. You will drive architecture, lead backend and frontend development with Python and React/TypeScript, and integrate GenAI into production systems.You will ensure coding standards, robust testing, and CI/CD, while guiding Azure deployments...

IFS in London is seeking a seasoned software engineer to lead the design and rollout of scalable APIs and AI-enabled features across front-end and back-end. You will steer architectural decisions, uphold reliability, and drive DevOps practices within a lean shared service model.The role demands strong full-stack capabilities (React and Go or similar) and a...

Norton Rose Fulbright in London is building a new R&D capability focused on data-driven and AI-enabled products for legal services. The Frontend-led Full-Stack Product Engineer will own user-facing applications, turning complex workflows into clear experiences while building integrations and services.You will deploy and operate React/Next.js apps in Azure,...

Full Stack Python Developer | 12-Month Contract | London | Hybrid A 12-month contract opportunity for a Full Stack Python Developer to work on enterprise applications within a complex technology environment. The role combines backend engineering, front-end development, database management and Linux automation, with a strong focus on building scalable and...

We are looking for a mid-level full stack developer to join our product focussed team. The Role We are looking for a passionate full stack developer (2+ years of experience) to join our team. In this role you will get involved in both Frontend and Backend projects, from inception to delivery. It’s important to us that all our team members have buy‑in to...

Build intuitive user interfaces and APIs for Trovix products, working closely with our AI and product teams. You will work closely with a team of engineers, domain experts and regulated industry clients to deliver AI products that genuinely change how professionals work. This is not a research role - you will ship production features used daily by...