9 of 9 Senior React Developer Jobs in London

Senior React Native Developer - Contract (Outside IR35) 2.5 months | UK | Starting late September 2026 hedgehog lab is looking for a senior React Native contractor to join us for an immediate mobile app build, starting at the end of September. … mobile app used by millions of people every month. This is a hands on delivery role from day one. You will own React Native feature work and ship to a tight timeline, so we need someone who can drop in and be productive without a long ramp-up. What ...

## 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 ...

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 … service reliability, maintainability, performance and security. Proven experience writing effective automated tests. Practical experience with relational databases. Experience with modern frontend development, ideally using React and TypeScript. Familiarity with CI/CD practices and supporting software in production. Experience working collaboratively in an agile, product-focused engineering team. Curiosity ...

technical direction.Key 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 … Extensive commercial 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, ORM tooling ...

McGregor Recruitment is seeking a Senior UI Developer to join a major financial services technology programme in London, working on a high-performance Single Dealer Platform supporting electronic trading. Based in the City … London, this 12-month contract role focuses on front-end development and real-time interfaces. You will lead UI development, build scalable interfaces with React and RxJS, collaborate with Product, UX and Backend teams, and mentor UI engineers while integrating with Java #J-18808-Ljbffr ...

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 the company within the Equities Sales and Trading Technology, you are an integral part of an agile team that … 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 ...

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 the company within the Equities Sales and Trading Technology, you are an integral part of an agile team that … 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 ...

Summary City of London, England We are looking for a senior, experienced software engineer to assist with the development and maintenance of our in-house corporate network management utilities and applications. The candidate must be comfortable using the Linux command line interface. Previous experience with network devices ...