751 to 775 of 809 React Jobs in the South East

Senior Frontend Engineer – Join a profitable FinTech Scale-Up 🚀 💰Up to £110,000 🏡Hybrid working – once a week onsite in London 💻React, TypeScript, API experience We’re partnered with a leading FinTech scale-up who are transforming how small businesses access finance to grow and scale. The business is backed by a strong track record and with an ambitious mission … B testing and tracking to measure the impact you’re making on the product and how this can shape future product decisions Build and develop code in TypeScript and React and continue to contribute to a high-performing codebase Work closely with Backend Engineers to shape and integrate APIs to ensure seamless data flow to their customers What are they … looking for: Good experience within Frontend development including React and TypeScript Knowledge and experience of working with APIs Experience of establishing and using monitoring and alerting across Frontend applications If this role sounds like a good match to what you’re looking for in your next role and you’re keen to find out more, please reach out to me More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer who enjoys autonomy and wants to build products from end-to-end? If so, read on... Senior Full Stack Engineer – We … found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They believe in building fast and iterating, working closely … Full Stack Engineer for them? The Senior Full Stack Engineer will have experience of building complex solutions in product-driven companies with good knowledge of some or all of React, Next.js and Typescript on AWS. You will need a product mindset, working closely with the product team and being comfortable making decisions on new products and features which will impact More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer who enjoys autonomy and wants to build products from end-to-end? If so, read on... Senior Full Stack Engineer – We … found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They believe in building fast and iterating, working closely … Full Stack Engineer for them? The Senior Full Stack Engineer will have experience of building complex solutions in product-driven companies with good knowledge of some or all of React, Next.js and Typescript on AWS. You will need a product mindset, working closely with the product team and being comfortable making decisions on new products and features which will impact More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer who enjoys autonomy and wants to build products from end-to-end? If so, read on... Senior Full Stack Engineer – We … found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They believe in building fast and iterating, working closely … Full Stack Engineer for them? The Senior Full Stack Engineer will have experience of building complex solutions in product-driven companies with good knowledge of some or all of React, Next.js and Typescript on AWS. You will need a product mindset, working closely with the product team and being comfortable making decisions on new products and features which will impact More ❯

Key Responsibilities: Develop and maintain core product features using PHP (Laravel) Support and integrate third-party tools such as HubSpot and Stripe Contribute to the ongoing transition towards a React/JavaScript front end Collaborate closely with internal teams and clients to understand requirements and deliver solutions Enhance system stability, scalability and performance through continuous improvement Key Skills & Experience: Strong … commercial experience with PHP and Laravel Familiarity with modern JavaScript frameworks (React experience a bonus, not essential) Experience working with APIs and third-party integrations Excellent communication skills and a proactive, problem-solving mindset Comfortable maintaining legacy systems while supporting technology modernisation A thoughtful, methodical and customer-focused approach to development If you’re looking for a role that combines More ❯

Key Responsibilities: Develop and maintain core product features using PHP (Laravel) Support and integrate third-party tools such as HubSpot and Stripe Contribute to the ongoing transition towards a React/JavaScript Front End Collaborate closely with internal teams and clients to understand requirements and deliver solutions Enhance system stability, scalability and performance through continuous improvement Key Skills & Experience: Strong … commercial experience with PHP and Laravel Familiarity with modern JavaScript frameworks (React experience a bonus, not essential) Experience working with APIs and third-party integrations Excellent communication skills and a proactive, problem-solving mindset Comfortable maintaining Legacy systems while supporting technology modernisation A thoughtful, methodical and customer-focused approach to development If you're looking for a role that combines More ❯

FRONT END ENGINEER (AI/ML START UP COMPANY) UP TO 75k LONDON - HYBRID (2 DAYS A WEEK) React, Javascript, Typescript, GraphQL, TDD, CSS, HTML A start-up company is hiring a Front-End Engineer to join their growing team to work on R&D projects in Machine Learning and Data Visualisation. They are looking for a front-end engineer … a test-driven development approach Supporting the Data Science & ML functions Establishing and promoting the use of best practices in the software engineering life cycle YOUR SKILLS & EXPERIENCE: Essential: React Typescript TDD HTML CSS Nice to have: Figma Experience in a start up or scale up. THE SALARY & BENEFITS Salary is a maximum of 75k. INTERVIEW PROCESS (3 STAGES More ❯

Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise … management, testing, and performance. You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested. 🔧 Tech Stack Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion State Management: Zustand Testing: Vitest Backend (light exposure): Node.js, Prisma, MySQL Infra: R2 Cloudfalre, AWS S3, Vercel Auth: NextAuth.js APIs: Facebook Marketing API, TikTok … safe continuous deployment Ship features end-to-end: idea → build → optimize for robust testing, speed and UX You Might Be a Fit If You... Have 5+ years building production React/Next.js apps Are skilled at state management in large, complex apps Believe testing is part of building, not an afterthought Care about performance, UX, and clean design systems Communicate More ❯

Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise … management, testing, and performance. You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested. 🔧 Tech Stack Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion State Management: Zustand Testing: Vitest Backend (light exposure): Node.js, Prisma, MySQL Infra: R2 Cloudfalre, AWS S3, Vercel Auth: NextAuth.js APIs: Facebook Marketing API, TikTok … safe continuous deployment Ship features end-to-end: idea → build → optimize for robust testing, speed and UX You Might Be a Fit If You... Have 5+ years building production React/Next.js apps Are skilled at state management in large, complex apps Believe testing is part of building, not an afterthought Care about performance, UX, and clean design systems Communicate More ❯

Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise … management, testing, and performance. You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested. 🔧 Tech Stack Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion State Management: Zustand Testing: Vitest Backend (light exposure): Node.js, Prisma, MySQL Infra: R2 Cloudfalre, AWS S3, Vercel Auth: NextAuth.js APIs: Facebook Marketing API, TikTok … safe continuous deployment Ship features end-to-end: idea → build → optimize for robust testing, speed and UX You Might Be a Fit If You... Have 5+ years building production React/Next.js apps Are skilled at state management in large, complex apps Believe testing is part of building, not an afterthought Care about performance, UX, and clean design systems Communicate More ❯

faster and smarter. Think: Python interpreter + visual UI + no-code workflows + GenAI. This role suits engineers with strong Python and frontend experience (Vue + TypeScript preferred, React is fine too), and a passion for building tools for developers. What you’ll do: Build core parts of their low-code UI and no-code workflow builder Shape backend … is highly desired Experience working with LLMs, RAGs, Langchain, OpenAI, Claude etc is beneficial Generative AI Product experience Production-grade Python skills Frontend experience with Vue + TypeScript , or React and a willingness to learn Vue Understanding of web performance, testing, REST APIs, OAuth Comfort working in fast-paced, ambiguous environments Bonus: experience with devtools, no-code/low-code More ❯

faster and smarter. Think: Python interpreter + visual UI + no-code workflows + GenAI. This role suits engineers with strong Python and frontend experience (Vue + TypeScript preferred, React is fine too), and a passion for building tools for developers. What you’ll do: Build core parts of their low-code UI and no-code workflow builder Shape backend … is highly desired Experience working with LLMs, RAGs, Langchain, OpenAI, Claude etc is beneficial Generative AI Product experience Production-grade Python skills Frontend experience with Vue + TypeScript , or React and a willingness to learn Vue Understanding of web performance, testing, REST APIs, OAuth Comfort working in fast-paced, ambiguous environments Bonus: experience with devtools, no-code/low-code More ❯

faster and smarter. Think: Python interpreter + visual UI + no-code workflows + GenAI. This role suits engineers with strong Python and frontend experience (Vue + TypeScript preferred, React is fine too), and a passion for building tools for developers. What you’ll do: Build core parts of their low-code UI and no-code workflow builder Shape backend … is highly desired Experience working with LLMs, RAGs, Langchain, OpenAI, Claude etc is beneficial Generative AI Product experience Production-grade Python skills Frontend experience with Vue + TypeScript , or React and a willingness to learn Vue Understanding of web performance, testing, REST APIs, OAuth Comfort working in fast-paced, ambiguous environments Bonus: experience with devtools, no-code/low-code More ❯

to focus on solving bigger problems, building better products, and delivering exceptional customer experiences. What You’ll Do Architect the platform: Define patterns, conventions, and tooling that keep the React + TypeScript codebase fast, modular, and maintainable. Evolve design systems: Lead on design tokens, accessibility standards, and Storybook workflows to drive consistency and speed in development. Scale data-driven UIs … code, and run architecture workshops to raise the overall engineering bar. Collaborate deeply: Partner with cross-functional teams to translate complex, ambiguous problems into elegant, scalable solutions. Tech Ecosystem React · TypeScript · Vite · Next.js · WebAssembly (DuckDB, WebGPU) · D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record More ❯

to focus on solving bigger problems, building better products, and delivering exceptional customer experiences. What You’ll Do Architect the platform: Define patterns, conventions, and tooling that keep the React + TypeScript codebase fast, modular, and maintainable. Evolve design systems: Lead on design tokens, accessibility standards, and Storybook workflows to drive consistency and speed in development. Scale data-driven UIs … code, and run architecture workshops to raise the overall engineering bar. Collaborate deeply: Partner with cross-functional teams to translate complex, ambiguous problems into elegant, scalable solutions. Tech Ecosystem React · TypeScript · Vite · Next.js · WebAssembly (DuckDB, WebGPU) · D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record More ❯

to focus on solving bigger problems, building better products, and delivering exceptional customer experiences. What You’ll Do Architect the platform: Define patterns, conventions, and tooling that keep the React + TypeScript codebase fast, modular, and maintainable. Evolve design systems: Lead on design tokens, accessibility standards, and Storybook workflows to drive consistency and speed in development. Scale data-driven UIs … code, and run architecture workshops to raise the overall engineering bar. Collaborate deeply: Partner with cross-functional teams to translate complex, ambiguous problems into elegant, scalable solutions. Tech Ecosystem React · TypeScript · Vite · Next.js · WebAssembly (DuckDB, WebGPU) · D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record More ❯

Job title: Senior Full Stack Developer (Typescript) Job type: Contract Contract Length : 6-12 months Rate : £500-600 per day (inside IR35) Role Location : London, UK (Hybrid - 1 day a week onsite) The company : A leading established household brand with More ❯

Job title: Senior Full Stack Developer (Typescript) Job type: Contract Contract Length : 6-12 months Rate : £500-600 per day (inside IR35) Role Location : London, UK (Hybrid - 1 day a week onsite) The company : A leading established household brand with More ❯

Job title: Senior Full Stack Developer (Typescript) Job type: Contract Contract Length : 6-12 months Rate : £500-600 per day (inside IR35) Role Location : London, UK (Hybrid - 1 day a week onsite) The company : A leading established household brand with More ❯

execution so they can be built rapidly and tested as MVPs Execution so they can be built rapidly and tested prototypes prior to deployment Track record with front-end (React, Unity, WebGL, Android, iOS, React), back-end (Kotlin, REST, AWS, PHP8/Symfony4, AWS/Azure), AI, ML, web Past experience as a hands-on software engineer, ideally on Back More ❯

execution so they can be built rapidly and tested as MVPs Execution so they can be built rapidly and tested prototypes prior to deployment Track record with front-end (React, Unity, WebGL, Android, iOS, React), back-end (Kotlin, REST, AWS, PHP8/Symfony4, AWS/Azure), AI, ML, web Past experience as a hands-on software engineer, ideally on Back More ❯

execution so they can be built rapidly and tested as MVPs Execution so they can be built rapidly and tested prototypes prior to deployment Track record with front-end (React, Unity, WebGL, Android, iOS, React), back-end (Kotlin, REST, AWS, PHP8/Symfony4, AWS/Azure), AI, ML, web Past experience as a hands-on software engineer, ideally on Back More ❯

for integrating AI tools into your workflow Clear reasoning and ability to justify design decisions Highly self-driven and capable of working with limited direction Bonus Points Experience with React Native, Swift, or web frameworks like React/Next.js Familiarity with backend frameworks or cloud platforms (e.g. Node, Supabase, Firebase) Interest in automation, developer tools, or system design An eye More ❯

An exciting opportunity for an experienced Full-Stack Engineer to help transform a major Fixed Income front-office technology landscape. You'll architect and deliver high-performance, real-time React applications that support trading workflows, working closely with stakeholders to shape a scalable, future-ready platform. Key Responsibilities: Design and develop modern, real-time React/Java applications for trading … requirements into cohesive system architectures Promote engineering excellence, modern development practices, and continuous improvement Contribute to platform modernisation, helping define long-term technology direction Key Requirements: Strong expertise in React, TypeScript, and modern web technologies Proven experience building real-time, event-driven systems (WebSockets, Web Workers, asynchronous data flow) Solid background in backend development, ideally with Java, REST APIs, and More ❯

Full Stack Engineer — Python, TypeScript, React Location: London (On-site, 5 days/week) Salary: £80,000 – £130,000 + Equity Our client is building a platform that brings AI into real-world operations by teaching models how specific companies operate. Growing in London and looking for product-focused engineers who want to work on complex systems and meaningful technology. … founders and senior engineers who previously built large-scale AI systems. Responsibilities: Build and iterate on a fast, scalable user-facing platform. Work across the stack with Python , TypeScript , React , and SQL . Collaborate with the core platform team on new features and infrastructure. Contribute to the design, architecture, and delivery of product-focused systems. Solve technically challenging problems for … novel technologies. Requirements: MUST HAVE: Full-stack experience in product or platform engineering. MUST HAVE: Strong proficiency in Python , TypeScript , React , and SQL . Bonus: familiarity with Rust or C , or a passion for learning new languages. MUST HAVE: Strong communication Interested in building real products, not research prototypes. We’re looking for product engineers. This is not an AI More ❯