301 to 325 of 374 React Jobs in London

Senior Software Engineer (Node + React)£85,000 + 10% Bonus + BenefitsLondon, Hybrid (2 days per week in the office) The Opportunity Our client are hiring three Senior Software Engineers to join a growing engineering function that builds technology powering large-scale advertising and media platforms. This … clearly articulate how and why they solve problems. What They're Looking For Experience Ideally 5+ years of commercial experience Experience with NodeJs and ReactJs Industry is open (financial services experience may not be the best fit) Mindset Self-starter who can take ownership Comfortable leading solutions without formal authority ...

improving conversion across sign-up, onboarding, or monetisation flows Is details oriented with an eye for design and UX. Has worked with CSS/React animations before and is comfortable with larger experiments and projects. A deep, intuitive understanding of consumer psychology and why certain words or layouts get customers … multivariate tests and correlative analyses; you know the difference between statistical significance and practical significance Proficient in our stack (or close to it): TypeScript, React, Next.js, TailwindCSS, ShadCN, React Query, serverless functions Knowledge of the B2B SaaS growth and experimentation stack: feature flagging, CRM integrations, event tracking, segmentation tools ...

Full Stack Developer (React/Java)Location: Central LondonContract Length: 12 months IT product team is looking to hire a lead developer with over 10 years experience delivering enterprise level front office e-trading applications. A proven track record delivering low latency, performance, highly intuitive software for front office trading … Worked on low latency software for traders and sales people* Mix of risk platforms as well as sales platforms etc* Languages - JavaScript/typescript * React essential + redux would be desirable* Backend Java ...

Java Script Works is looking for a skilled Senior/Lead Engineer with expertise in React (Next.js), React Native, and TypeScript to drive their cross-platform mobile application and technology ecosystem. The ideal candidate will identify and resolve architectural and performance issues, ensuring optimal functionality. This full-time position ...

Tilbury is seeking a Senior Software Engineer for a 12-month FTC maternity cover. You will design and develop mobile-first web applications using React and TypeScript, and build scalable backend services with Java and Spring Boot. This role emphasizes cross-functional collaboration within SCRUM teams and includes mentorship opportunities ...

London, United Kingdom. The role involves contributing to the rebuild and refinement of our core platform and writing clean, scalable code using TypeScript, React, and SQL. The ideal candidate will collaborate cross-functionally and design complex data models for performance. This full-time position offers competitive compensation. #J-18808-Ljbffr ...

London. The ideal candidate should demonstrate strong written and verbal communication skills and effectively collaborate across diverse functional teams. Experience with Python, Django, and React is a plus. This position offers competitive compensation and is located in Greater London. Visa sponsorship is not provided. #J-18808-Ljbffr ...

Software Engineer based in London, United Kingdom. The ideal candidate should have strong knowledge of ASP.NET Core and experience with frontend frameworks such as React and Vue.js. This full-time position offers a competitive compensation package. Please note that visa sponsorship is not provided. Join our team to work ...

code alongside leading a squad of seven. Qualifications Proven track record of successfully taking products to production. Full Stack modern programming expertise including React, Typescript, Node.js, React Native, and cloud development (AWS). Understanding of domain-driven design and best practices in architecture, software, security, and data management. Experience ...

applications for performance, scalability, and security. - Contribute to the evolution of front-end and back-end systems using modern web technologies such as React, Node.js, and TypeScript. What You Will Bring: - Strong proficiency in HTML, CSS, and JavaScript, with a solid grasp of best practices. - Proven experience with Node.js … modern frameworks like React and TypeScript. - Familiarity with WebGL and libraries such as three.js or react-three-fiber. - A solid understanding of back-end development concepts, including APIs and authentication. - A strong eye for UI/UX design, with experience in wireframing and prototyping being a bonus. This role ...

Senior Software Engineer (In-Car Payments) London, United Kingdom Posted 11 months ago Tech Stack Payments React Go JavaScript PHP Python TypeScript Requirements Highly skilled and proficient coding in PHP, with strong skills in adjacent areas such as TypeScript, React, JavaScript, or Python. A desire and willingness to learn other ...

people every day. You'll take ownership of frontend features end-to-end from scoping and building to shipping and iterating using technologies like React, TypeScript and Next.js. Contribute to technical discussions and help shape the direction of features within your team Participate in the technical exploration and prototyping … into tangible software Build and maintain a strong network outside of your immediate team and across the organisation Strong frontend development experience, ideally with React or Vue applications Good understanding of JavaScript (ES6+) and modern JS tooling/frameworks such as Next.js, Redux Saga, Reselect and TypeScript Demonstrable experience with ...

people every day. You'll take ownership of frontend features end-to-end from scoping and building to shipping and iterating using technologies like React, TypeScript and Next.js. Contribute to technical discussions and help shape the direction of features within your team Participate in the technical exploration and prototyping … into tangible software Build and maintain a strong network outside of your immediate team and across the organisation Strong frontend development experience, ideally with React or Vue applications Good understanding of JavaScript (ES6+) and modern JS tooling/frameworks such as Next.js, Redux Saga, Reselect and TypeScript Demonstrable experience with ...

field types, validation rules – and can be trusted to operate on it correctly. You'd be doing full-stack product work in TypeScript and React: MCP tools and integrations, agent orchestration, system prompts, evals to make the whole thing more reliable. Engineers on this team own their domain and work … closely with product on what gets built next. Responsibilities Deliver full‐stack product work: design and build React interfaces in Dashboards, APIs, and backend services. Develop MCP tools and integrations that extend what the agent can do. Implement agent loops – the orchestration logic that decides what the agent does ...

frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases. As a Senior Product Engineer, Full Stack, you will play a key role … suited to someone who enjoys pace, autonomy, and being trusted to deliver. What you will be doing Building customer-facing products from scratch using React, TypeScript, and modern frontend tooling Owning frontend quality, user experience, and engineering standards Contributing across the stack, including backend integrations, APIs, product logic, and Python ...

field types, validation rules - and can be trusted to operate on it correctly. You'd be doing full-stack product work in TypeScript and React: MCP tools and integrations, agent orchestration, system prompts, evals to make the whole thing more reliable. Engineers on this team own their domain and work … closely with product on what gets built next. What you'd be doing: Full-stack product work: React interfaces in Dashboards, APIs, backend services. MCP tools and integrations that extend what the agent can do. Agent loops: the orchestration logic that decides what the agent does, in what order ...

firm in London is looking for an Applications Developer who can work across the full stack: ASP.NET MVC, SharePoint (on-prem and Online), SQL, React, Power Platform, and everything in between. You'll be shaping how technology gets used across a complex, high-stakes environment working directly with senior stakeholders … this is worth reading. What you'll be doing Designing and building custom ASP.NET MVC web applications and SharePoint solutions Building front-ends using React, Angular, jQuery, and Bootstrap Developing and optimising SQL databases performance, integrity, scalability Using Power Platform (PowerApps, Power Automate) to streamline business workflows Producing reporting solutions ...

frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases. As a Senior Product Engineer, Full Stack, you will play a key role … suited to someone who enjoys pace, autonomy, and being trusted to deliver. What you will be doing Building customer-facing products from scratch using React, TypeScript, and modern frontend tooling Owning frontend quality, user experience, and engineering standards Contributing across the stack, including backend integrations, APIs, product logic, and Python ...

design system – define the visual language, build reusable primitives, and maintain the libraries that power every interface. Ship pixel‐perfect UI in React, with real ownership of theming, performance and motion. Make performance a feature – instrument Core Web Vitals, set bundle budgets, optimise hydration patterns and chase performance where … every engineer can contribute to the front end at your level. The split is roughly 70–80% front end, 20–30% back end (Node, React‐router, SvelteKit) — enough to remove performance bottlenecks without being a full‐stack role. Who you’ll work with You’ll report directly to the technical ...

skilled Pricing Services and Risk Viewer UI Developer to join our dynamic team. This senior software development position requires excellent C# and TypeScript/React skills, a strong knowledge of pricing models, quant libraries and risk analytics for both vanilla and exotic FX derivatives. The successful candidate will collaborate closely … continuous improvement of coding standards, testing frameworks, and development practices. Required Skills & Qualifications: substantial experience in software development. Highly experienced in C#, TypeScript/React, and Quant Library integration. Solid understanding of mathematics as applied to derivatives risk and pricing. Excellent written and verbal communication skills in English. Experience working ...

pivotal in both frontend and backend development, crafting responsive and scalable web applications. Key Responsibilities • Develop high-quality, scalable applications using Node.js, TypeScript, and React • Optimise data flow between databases and applications • Manage and optimise AWS cloud infrastructure • Collaborate with cross-functional teams to integrate new features and technologies • Mentor … related field • 6+ years of proven experience in an engineering role, with strong backend expertise in Typescript and Node and front capability in React • Proficiency in SQL, Redux, cloud services (AWS or GCP), RESTful API design and GraphQL • Strong analytical skills with the ability to design, optimise, and troubleshoot complex ...

flexibility to work from home twice a week (Mondays and Fridays). About you: You have strong full stack experience with Python, Django, TypeScript, React and FastAPIs You have experience of working on large scale systems with complex data You have experience of making architectural and technical decisions … Loan Hybrid working with Mondays and Fridays WFH Apply now to find out more about this Python Developer/Technical Lead (Python Django TypeScript React FastAPI) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. ...

Senior Frontend Product Engineer 💰 £100,000 - £130,000 + meaningful equity 📍 London | Hybrid (2 days in the office) 💻 TypeScript, React, Next.js, Node.js, AWS, K8 Company I'm working with one of the most interesting AI startups I've come across this year. They're building a new generation of automation … path towards a future Tech Lead position, in as little as 3 months. You'll be a good fit if you... Have strong TypeScript, React and Next.js experience Frontend heavy, but comfortable across the stack Have built 0 - 1 and helped scale a product from early traction into growth Good ...

assistant — Cursor, Copilot, etc. — and willing to learn Claude Code fast) Solid understanding of HTML, CSS, JavaScript and modern static site frameworks ( Astro preferred; React/Next.js experience is a plus) Working knowledge of technical SEO : schema markup, page speed (Core Web Vitals), crawlability, internal linking, meta optimisation Comfort with … did. Include links to 2–3 live sites you've built or worked on (Astro or static sites preferred). Answer this: "A React single-page-app site ranks badly because Google sees an empty HTML shell. What's your fix?" — a short, practical answer is fine. Put the word ...

assistant — Cursor, Copilot, etc. — and willing to learn Claude Code fast) Solid understanding of HTML, CSS, JavaScript and modern static site frameworks ( Astro preferred; React/Next.js experience is a plus) Working knowledge of technical SEO : schema markup, page speed (Core Web Vitals), crawlability, internal linking, meta optimisation Comfort with … did. Include links to 2–3 live sites you've built or worked on (Astro or static sites preferred). Answer this: "A React single-page-app site ranks badly because Google sees an empty HTML shell. What's your fix?" — a short, practical answer is fine. Put the word ...