19 of 19 Senior React Developer Jobs in London

Senior React Developer/Senior Front End Developer Join a focused application modernisation project, designing a secure, accessible React and TypeScript front end for an established enterprise platform while collaborating closely with an existing development team … handover. If you’ve also worked in the following roles, we’d also like to hear from you: Senior Frontend Engineer, React Engineer, Senior React Engineer, Senior Software Developer, Senior Software Engineer, Senior ...

Senior Frontend Developer (React & React Native) Senior Frontend Developer (React & React Native) Are you ready to take your React and React Native skills to the next level? All you need is: 7+ … years of experience as a Front-End Engineer; Strong proficiency in React 18+, including hooks, context, and modern patterns; Expert-level TypeScript experience with advanced types and strict configurations; Strong knowledge of state management tools (Redux, MobX, Zustand, etc.); Proven experience in building SPAs, PWAs, and working with RESTful ...

Senior Front-End Developer (React) – Equity Derivatives Technology – VP**Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business … section is about the candidate.*** Experience as a technical lead senior developer with front-end technology (JS, ideally React).* Extensive experience of system analysis and development of production-quality software applications.* Consistently clear and concise written and verbal communication.* Experience working with ...

BritAI Labs Limited, London, UK, is seeking a Senior React Developer to join our frontend team. You will work on web apps using React and TypeScript, plus Flutter-based mobile projects, with backend collaboration in Python/Django or FastAPI. Remote options ...

technologies Clear progression paths and mentorship Open Positions Explore our current openings and find the perfect role for your career. Senior React Developer Full-time London, UK/Remote 3+ years Join our frontend team to build cutting-edge web applications using React … automation and data analysis projects. Manage infrastructure, CI/CD pipelines, and ensure system reliability and security. Work across the entire stack, from frontend React applications to backend APIs and databases. Join our team in just 4 simple steps. We've streamlined our hiring process to be fast, fair ...

Senior Full Stack Developer TypeScript React API London, Greater London | £100k - £120k per year Senior Full Stack Engineer/Developer (TypeScript React API Rust) London onsite to £120k Opportunity for a Senior/… attractive area of London on a fulltime basis (Monday to Friday). About you: You have strong full stack software engineering skills: including TypeScript, React, backend services and APIs - ideally you’ll also have some knowledge of Rust You have experience shipping consumer facing products, ideally direct-to-consumer ...

Contract Senior Full Stack Developer – Java 21/React/AWS Contract Senior Full Stack Developer – Java 21/React/AWS We are looking for a Senior Full Stack Developer. The role … build a new Forms capability consisting of a Java 21/Spring Boot 3 backend service and a React/Vite/TanStack frontend portal, both deployed as containers on AWS EKS. The solution will reuse existing platform services for users, projects, project assignments, document storage/S3, Cognito ...

front office risk and valuation platform used in a fast paced, real time environment. The Role We are seeking a hands on Senior Developer to join a high impact technology team responsible for risk, valuation, and decision support systems. You will work across … live systems and participate in an on-call rota Work in a fast paced environment balancing quick deliveries with longer term enhancements Frontend: TypeScript, React Integration with pricing/computational services Requirements Solid knowledge of TypeScript and React Experience with relational databases (PostgreSQL preferred) Ability to work ...

Senior Developer to join their technology team in Greater London. This role requires expertise in TypeScript and React, where you will design and deliver features across UI and backend services. You will collaborate closely with stakeholders to refine requirements and support live systems. ...

## Senior Fullstack Developer — Java or Kotlin, React and TypeScriptApplylocations: London: Manchestertime type: Full timeposted on: Posted Todayjob requisition id: JR100892Founded in Switzerland in 1968, Zühlke is owned by its partners and located across Europe and Asia. We are a global transformation partner … wider JVM ecosystem, to develop reliable services, APIs and event-driven workflows. You will also contribute to modern web interfaces using technologies such as React and TypeScript.You will work in an increasingly AI-augmented engineering environment. We are looking for people who are curious about AI-augmented engineering ...

Senior Full Stack Developer (Kotlin, React) - Banking - London Daily rate: £500 - £700 (inside IR35) Duration: 6 - 12 months Hybrid: 3 days per week in office Start: ASAP We're looking for a hands-on engineer who thrives in a collaborative XP environment ...

pick up themselves. Work alongside our London team, with direct access to the people building and supporting Jodie. What you'll own Ship accessible React and TypeScript features from customer problem to production. Make loading, empty, error and live-update states feel deliberate and dependable. Build reusable interface patterns … application responsive as it grows. Use product feedback, tests and performance measurements to improve real customer journeys. What you'll bring Experience owning production React applications with TypeScript. Sound judgement about state, server data, component boundaries and testing. Ability to work closely with design and backend engineers and explain ...

Responsibilities Design, develop, test, and maintain scalable services using C#/.NET (ASP.NET Core) and RESTful APIs. Build responsive, accessible user interfaces using React, TypeScript, HTML, and CSS.Implement secure authentication/authorisation (e.g., OAuth2/OIDC) and follow secure coding practices. Optimise performance, reliability, and observability (logging, metrics, tracing … experience in full stack development with C#/.NET and React. Strong knowledge of .NET Core, dependency injection, asynchronous programming, and API design. Strong React experience including state management and modern front-end tooling. Solid understanding of software design principles, patterns, and clean code practices. Experience with SQL databases ...

pick up themselves. Work alongside our London team, with direct access to the people building and supporting Jodie. What you'll own Own React Native and TypeScript features across iOS and Android. Make push notifications, deep links and authentication work reliably across app states. Handle poor connectivity, background behaviour … with care. Own release quality, crash investigation and app-store delivery with the wider engineering team. What you'll bring Experience shipping and maintaining React Native apps on both iOS and Android. A practical understanding of native build tooling, signing and release workflows. Experience debugging performance, lifecycle and network ...

about developing your career, while helping others along the way, come join the Broadridge team.We are excited to announce an opportunity for a Senior Full Stack Developer to join our organization as part of our AI Enablement Team.In this role, you will play ...

integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Senior Lead Software Engineer at JPMorganChase within the Equities Sales and Trading Technology, you are an integral part of an agile team that works … oversight Practical cloud native experience Experience in Computer Science, Computer Engineering, Mathematics, or a related technical field Preferred qualifications, capabilities, and skills Expertise in React 17+ and modern front‐end development practices Experience with AG Grid or similar advanced data grid libraries Proven ability to optimize web applications ...

integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Senior Lead Software Engineer at JPMorganChase within the Equities Sales and Trading Technology, you are an integral part of an agile team that works … with little to no oversightPractical cloud native experienceExperience in Computer Science, Computer Engineering, Mathematics, or a related technical fieldPreferred qualifications, capabilities, and skillsExpertise in React 17+ and modern front-end development practicesExperience with AG Grid or similar advanced data grid librariesProven ability to optimize web applications for performance ...

better. The work is a mixture of green-field and legacy projects (much like any other mature organisation) mostly using C#, SQL Server, Next.js, React & TypeScript, with a combination of monolithic and microservices architectures. Key Responsibilities We are looking for technically strong and organised senior developers … modern edge/serverless environments. Essential Skills/Experience We would like to meet someone who is Minimum 6 years of commercial experience of React/TypeScript Minimum 6 years of solid C# in a commercial environment Produces initial results rapidly and iterate based upon feedback. Knowledge of microservice ...

Tendable is a venture-backed health-tech company hiring a Full Stack Developer in London. The role combines strong frontend work with backend support in a cross-functional team, focusing on delivering robust, scalable healthcare software. … Hybrid work options include up to 3 days in the London office with remote or client visits as needed. Ideal candidates will have extensive React experience, REST API proficiency, and a solid grasp of PostgreSQL. #J-18808-Ljbffr ...