676 to 700 of 761 React Jobs in London

certified by Welcome To The Jungle, it’s never been a more exciting time to join! Key Responsibilities: Develop, evolve, and maintain our core web application using Ruby, Rails, React, and TypeScript. Collaborate closely with product managers and other stakeholders to deeply understand business needs and translate them into technical solutions. Contribute actively to our technology roadmap and priorities, working … term strategic goals. Champion best practices in areas like system design, performance, security, and operational excellence. About you: 5+ years of professional experience building web applications using Ruby, Rails, React, and TypeScript. Strong backend development skills with a willingness to contribute across the full stack Proactive and self-driven, able to take ownership of tasks from conception to deployment. Excellent More ❯

certified by Welcome To The Jungle, it’s never been a more exciting time to join! Key Responsibilities: Develop, evolve, and maintain our core web application using Ruby, Rails, React, and TypeScript. Collaborate closely with product managers and other stakeholders to deeply understand business needs and translate them into technical solutions. Contribute actively to our technology roadmap and priorities, working … term strategic goals. Champion best practices in areas like system design, performance, security, and operational excellence. About you: 5+ years of professional experience building web applications using Ruby, Rails, React, and TypeScript. Strong backend development skills with a willingness to contribute across the full stack Proactive and self-driven, able to take ownership of tasks from conception to deployment. Excellent More ❯

certified by Welcome To The Jungle, it’s never been a more exciting time to join! Key Responsibilities: Develop, evolve, and maintain our core web application using Ruby, Rails, React, and TypeScript. Collaborate closely with product managers and other stakeholders to deeply understand business needs and translate them into technical solutions. Contribute actively to our technology roadmap and priorities, working … term strategic goals. Champion best practices in areas like system design, performance, security, and operational excellence. About you: 5+ years of professional experience building web applications using Ruby, Rails, React, and TypeScript. Strong backend development skills with a willingness to contribute across the full stack Proactive and self-driven, able to take ownership of tasks from conception to deployment. Excellent More ❯

Senior/Lead Hands on Full Stack Developer - React/Python London | Hybrid (3days in the office and 2 days from home) £110,000+ Equity | Full-Time | Start-up We're a high-growth start-up building a leading healthcare! Looking for a Full Stack developer who loves working across the stack - React on the front end, Python on the … back end. You'll: Build responsive UIs in React Develop APIs & services in Python (either Django/Flask/FastAPI) Own features end-to-end Help shape our tech stack You have: Strong React & Python skills API & database experience A proactive, problem-solving mindset Ideally start-up or scale-up experience Why us? Big impact from day one Technical ownership More ❯

Senior/Lead Hands on Full Stack Developer - React/Python London | Hybrid (3days in the office and 2 days from home) £110,000+ Equity | Full-Time | Start-up We're a high-growth start-up building a leading healthcare! Looking for a Full Stack developer who loves working across the stack - React on the front end, Python on the … back end. You'll: Build responsive UIs in React Develop APIs & services in Python (either Django/Flask/FastAPI) Own features end-to-end Help shape our tech stack You have: Strong React & Python skills API & database experience A proactive, problem-solving mindset Ideally start-up or scale-up experience Why us? Big impact from day one Technical ownership More ❯

define acceptance criteria Identify, reproduce, and report software defects with clarity and context Participate in release testing and ensure product stability before deployment Requirements Proven experience testing front-end (React/React Native) and back-end (Node.js/REST/GraphQL) systems Strong understanding of software QA methodologies, tools, and processes Experience writing automated tests with frameworks such as Playwright More ❯

define acceptance criteria Identify, reproduce, and report software defects with clarity and context Participate in release testing and ensure product stability before deployment Requirements Proven experience testing front-end (React/React Native) and back-end (Node.js/REST/GraphQL) systems Strong understanding of software QA methodologies, tools, and processes Experience writing automated tests with frameworks such as Playwright More ❯

system evolution, and ensure strategic tech integration. Enjoy flexible work, ongoing training, and a supportive, inclusive environment. Key Responsibilities: Design and develop modern, high-performance front-end applications using React and TypeScript, ensuring they meet the demanding needs of real-time trading environments. Plan and deliver solutions that align with business goals and support intricate trading workflows Build resilient and … gather requirements, provide technical guidance, and ensure that delivered solutions address real-world challenges faced by end users. Key Requirements: Demonstrated expertise in developing sophisticated front-end applications using React.js, JavaScript/TypeScript Proven experience building real-time trading or financial applications where high performance and low latency are essential for business success. Comprehensive understanding of front-end architecture principles More ❯

life - vouchers, rewards, and interactive user journeys. Each project offers full ownership, creative input, and the chance to deliver visible impact. Responsibilities Build performant, maintainable UIs using Next.js and React Collaborate with backend engineers and PMs to deliver end-to-end features Implement clean, reusable components and intuitive UX flows Support code reviews and ensure high-quality standards across projects … Deliver production-ready features with smooth handovers to permanent teams Skills & Experience Must-have: Next.js React JavaScript/TypeScript Nice-to-have: Experience building SSO-enabled applications Exposure to gamification or UX-driven products Familiarity with Django-based backends Soft Skills: Creative and detail-oriented approach to UI/UX Excellent stakeholder communication Delivery-focused mindset, comfortable working autonomously More ❯

Senior Software Engineer Node.js/AWS/React London (Hybrid, 3 days onsite) Are you the kind of Senior Software Engineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a Senior Software Engineer to join a small, but ambitious tech-for-good/IoT startup based … cleaner, more maintainable code What were looking for: Strong hands-on experience with Node.js backend software development Comfortable working across or picking up other tech as needed ie AWS, React etc (If you have experience with AWS & React, that is a bonus) Enthusiasm for writing clean, tested, production-ready code Experience (or interest) in data-heavy systems, IoT, or connected More ❯

the design and delivery of modern, Real Time trading systems. Key Requirements Candidates must demonstrate strong technical expertise in Real Time systems design and development, with advanced proficiency in React/TypeScript and solid Java skills. Experience & Skills Proven full stack development experience (React 70%/Java 30%) Advanced React and TypeScript skills, with experience in UI re-writes Strong More ❯

that help them identify, assess, manage, and mitigate risks effectively. Their platform offers software solutions that support enterprise risk management, compliance management, health and safety, and incident reporting. Stack: React, Node, Nextjs, AWS Responsibilites: Develop and maintain responsive web applications using React and Next.js for frontend development. Write scalable, reusable, and efficient TypeScript code for both frontend and backend. Build More ❯

that help them identify, assess, manage, and mitigate risks effectively. Their platform offers software solutions that support enterprise risk management, compliance management, health and safety, and incident reporting. Stack: React, Node, Nextjs, AWS Responsibilites: Develop and maintain responsive web applications using React and Next.js for frontend development. Write scalable, reusable, and efficient TypeScript code for both frontend and backend. Build More ❯

that help them identify, assess, manage, and mitigate risks effectively. Their platform offers software solutions that support enterprise risk management, compliance management, health and safety, and incident reporting. Stack: React, Node, Nextjs, AWS Responsibilites: Develop and maintain responsive web applications using React and Next.js for frontend development. Write scalable, reusable, and efficient TypeScript code for both frontend and backend. Build More ❯

that help them identify, assess, manage, and mitigate risks effectively. Their platform offers software solutions that support enterprise risk management, compliance management, health and safety, and incident reporting. Stack: React, Node, Nextjs, AWS Responsibilites: Develop and maintain responsive web applications using React and Next.js for frontend development. Write scalable, reusable, and efficient TypeScript code for both frontend and backend. Build More ❯

SR2 are currently looking for a Principal Software Engineer (Python/React) for a fast-growing start-up company in London. Location: Central London (2-3 days a week onsite). Salary: £100 - 120k. What we are looking for: Key skills: Python, React, TypeScript & AWS. Proven track record in a client-facing technical role, dealing with internal & external stakeholders. Ability More ❯

SR2 are currently looking for a Principal Software Engineer (Python/React) for a fast-growing start-up company in London. Location: Central London (2-3 days a week onsite). Salary: £100 - 120k. What we are looking for: Key skills: Python, React, TypeScript & AWS. Proven track record in a client-facing technical role, dealing with internal & external stakeholders. Ability More ❯

SR2 are currently looking for a Principal Software Engineer (Python/React) for a fast-growing start-up company in London. Location: Central London (2-3 days a week onsite). Salary: £100 - 120k. What we are looking for: Key skills: Python, React, TypeScript & AWS. Proven track record in a client-facing technical role, dealing with internal & external stakeholders. Ability More ❯

SR2 are currently looking for a Principal Software Engineer (Python/React) for a fast-growing start-up company in London. Location: Central London (2-3 days a week onsite). Salary: £100 - 120k. What we are looking for: Key skills: Python, React, TypeScript & AWS. Proven track record in a client-facing technical role, dealing with internal & external stakeholders. Ability More ❯

Join a leading international eCommerce organization committed to driving innovation through AI. We are looking for a Senior Frontend Developer to lead the modernization of our core systems, utilizing React and JavaScript to enhance performance and efficiency. Your expertise will be key in transforming our technology stack and implementing AI-powered solutions. About the Role: Play a pivotal role in … development workflows. Modernize critical systems and implement intelligent solutions that support business growth and efficiency. Key Responsibilities: Lead the migration of Legacy systems to a modern tech stack using React, JavaScript, and cloud platforms. Design and implement AI-driven solutions to improve code quality, automate tasks, and boost productivity. Collaborate with IT and product teams to redesign and enhance core … applications. Mentor junior developers, fostering a culture of continuous learning and innovation. Essential Skills: 5+ years of software development experience, including significant work in system modernization. Strong expertise in React and JavaScript. Familiarity with REST APIs and cloud infrastructure. Hands-on experience with AI-based developer tools (eg, GitHub Copilot, ChatGPT, Tabnine). Excellent leadership, communication, and collaboration skills. Passion More ❯

to life - vouchers, rewards, and interactive user journeys. Each project offers full ownership, creative input, and the chance to deliver visible impact. Responsibilities Build performant, maintainable UIs using and React Collaborate with backend engineers and PMs to deliver end-to-end features Implement clean, reusable components and intuitive UX flows Support code reviews and ensure high-quality standards across projects … Deliver production-ready features with smooth handovers to permanent teams Skills & Experience Must-have: React JavaScript/TypeScript Nice-to-have: Experience building SSO-enabled applications Exposure to gamification or UX-driven products Familiarity with Django-based backends Soft Skills: Creative and detail-oriented approach to UI/UX Excellent stakeholder communication Delivery-focused mindset, comfortable working autonomously 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 ❯