226 to 249 of 249 React Jobs in the Thames Valley

Senior Full Stack Engineer | AI SaaS | Typescript/React/Node Senior Full Stack Engineer Up to £90,000 per annum + Equity d.o.e Required Skills: Typescript, React, Node AI-Powered SaaS for thriving sectors We’re working with a fast-growing SaaS company building AI-powered workflow automation tools for the investment and legal sectors. Their platform replaces slow … product, extend automation capabilities, and support new data-driven features. What you’ll be doing as a Senior Full Stack Engineer: Designing and building modern full stack systems using React, Node, and Typescript Developing scalable APIs and backend services to manage structured financial and legal data Building secure, performant interfaces that give users real-time visibility into complex workflows Collaborating … solutions Contributing to architectural discussions and mentoring across the engineering team What you’ll bring as a Senior Full Stack Engineer: Strong experience building production systems across the stack (React, Node, Typescript) Good understanding of system design, data modelling, and API architecture Experience with cloud infrastructure (AWS or similar) and relational databases A pragmatic, product-minded approach to building features More ❯

Frontend Engineer – React and Typescript – Hybrid 1-2 days onsite – 6-month initial contract We’re looking for a Front-End Engineer to join the DAX Ad Platform team, helping to build scalable, modular user interfaces within a modern React-based environment. You’ll play a key role in migrating features from a legacy platform to a new micro-frontend … maintainability across the product. What You’ll Do Contribute to the migration of legacy features into the new micro-frontend platform Build and maintain front-end features using a React + TypeScript stack Utilise and extend an internal component library to ensure consistency and scalability Implement complex form handling and validation using Formik and Yup Integrate with GraphQL APIs via … flows Collaborate cross-functionally with designers, product managers, and engineers to deliver cohesive and accessible UI experiences Write unit tests and contribute to automated testing strategies using Vite and React Testing Library Ideal Experience Strong proficiency in React and TypeScript Experience working with component libraries (Material UI or similar) Familiarity with GraphQL, Apollo Client, and Formik/Yup for form More ❯

top priorities Skilled at navigating uncertainty and shifting priorities while inspiring and motivating your team. Hands-on experience in at least one part of our stack is essential: Mobile: React Native, iOS/Android Web Frontend: React, TypeScript, Apollo, Tailwind Backend: TypeScript, Go, GraphQL, PostgreSQL, gRPC Hosting: GCP, AWS Above all, you bring strong commercial insight and a collaborative mindset More ❯

join a Global commodities Trading company to help lead This company has been growing their tech division steadily over the last 3 years and is looking to for a React & Typescript specialist to join their Centre of Excellence team. The company are based in central London and have a fantastic high performing working culture. They have been increasing their adoption … a Lead or Platform Engineer to unify and progress their approach. This is a fantastic opportunity to break into the commodities sector and take a position yourself as the React SME throughout the entire organisation. Core Responsibilities Own the component library and surround libraries Work closely with Design, Product and DevOps team Act as a React champion throughout the growing … Dev team, mentoring and upskilling Requirements Expertise in React 18+ and Typescript Previous experience in building and maintaining component libraries Ability to impact change and mentor/unify developers Some Experience working in trading, banking, or financial service (Desirable) Experience working within a platform team serving multiple product teams (Desirable) Package base salaries up to £150K with TC over £200K 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 ❯

Product Engineer - React & TypeScript, some Python - AI video editing🎬 - £90-110k We're helping a AI company in the entertainment space hire a front end leaning fullstack engineer. You'll be working with a talented cross-functional team to build polished, high-performance user interfaces for their generative AI product suite, that changes how video editing happens. The company … are around 100 people and have an established customer base, but big scope to scale. You'll work with React and TypeScript, with scope to influence technical decisions and contribute across the stack. If this sounds like you, please get in touch: Strong commercial experience with React and TypeScript Experience with backend/Python is a bonus Product engineering mindset More ❯

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 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 ❯

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 ❯

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 ❯

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 ❯

leader within the energy & trading sector, with a strong presence across oil & gas, renewables, power and carbon. They're in the market for a Senior Frontend Developer, with excellent React and TypeScript development skills, coupled with a strong background building and/or bootstrapping production component libraries & design systems. This is a unique opportunity where you will work closely with … development teams to understand their requirements and assist in developing & improving frontend solutions. Key Requirements: React TypeScript 5+ years of professional frontend experience having built or maintained production component library/design systems. Excellent communication. Bachelors or Masters degree. Compensation: This role is offering an incredibly competitive salary + extended benefits package. How to apply: Please apply through the link More ❯

I'm currently looking for a Senior React Developer to join a London Based Trading company as they continue to scale and grow their development team. This company has been growing substantially over the last 2 years and are expanding again with exciting projects lined up in their trading technology teams. The company are based in central London and have … best total comp packages in London. This is an in office position in central London, with some flexibility to 4 days a week after 3-6 months. Requirements Strong React skills Strong experience working in Typescript Some Experience working in trading, banking, or financial services is desirable Package base salaries up to £140K with TC over £200K 12% pension Private More ❯

Purpose driven Python, React, Typescript Software Engineer – Solving Humanity’s Most Urgent Challenges London based A pioneering early-stage investment firm is backing entrepreneurs solving humanity’s most urgent challenges — from synthetic biology and clean energy to AI safety, healthcare, and space. The team believes we’re entering a new economic renaissance where technology and science can bend the arc … rapidly across multiple domains — expect to work on something new every few weeks. Push the boundaries of how a modern fund operates through creative engineering. Tech Stack Python, TypeScript, React, Next.js — with a deep embrace of AI tooling and automation. Curiosity about new technologies is essential. Ideal Profile Startup DNA: Experience in fast-moving environments, ideally as a founding engineer More ❯

React Developer – Fixed Income eTrading We are seeking experienced React Developers to join the Fixed Income eTrading technology team at a global investment bank. This position is part of a high-profile, multi-year transformation initiative aimed at modernising and scaling a next-generation electronic trading platform. The role is to help build cutting edge frontend systems for Fixed Income … trade execution. Collaborate with traders, quants, and back-end engineers to deliver seamless UI experiences. Contribute to architectural decisions and front-end performance tuning. Required Skills & Experience Expertise in React.js and modern JavaScript (ES6+) Proven experience delivering front-end applications in electronic trading environments Strong understanding of performance optimisation and low-latency UI design Experience with real-time data technologies More ❯

for experienced engineers who want to combine hands-on development with mentoring and leadership. The Role As a Senior Frontend Developer, you’ll: Build and maintain scalable applications with React, TypeScript, Tailwind, Cypress Mentor a core group of developers and support a wider engineering team Drive technical best practices and ensure high-quality, user-focused products Play a key role … in shaping product delivery and technical direction About You We’re looking for developers who: Have strong commercial experience with React and TypeScript Enjoy mentoring, coaching, and supporting other developers Want stability in a permanent role and the chance to make a long-term impact Thrive in collaborative, fast-paced environments Why Join? With multiple openings, this is a great More ❯

function, and ensure delivery of a product that leads globally. Your role will span: Technical Leadership (c.30%) – guiding architecture decisions, reviewing technical solutions, and ensuring best practices across NodeJS, React, GCP, AWS, Flutter, Swift, and Kotlin. Team & Delivery Leadership – leading, scaling, and mentoring a growing engineering team, building an empowering, high-performance culture. Product & Commercial Focus – collaborating with product and … architecture and design (not expected to code in production daily, but able to get into the detail where required). Experience across modern web and mobile stacks – ideally NodeJS, React, Flutter, Swift, Kotlin, GCP/AWS. Demonstrated ability to deliver complex product roadmaps on time and at scale. Commercial and product-minded – able to connect technology decisions with business value. More ❯

opportunity to shape design and engineering from the ground up You'll be the bridge between design and code. Taking high-impact ideas from concept to production using Figma, React and TypeScript . You'll define visual language, build smooth user experiences and help scale products used by thousands. What you'll do Own front-end design and development across … web products Create world-class UI/UX in Figma and implement directly in React/TypeScript Work with product and AI engineers to prototype and ship new features fast Contribute to brand, component library, and overall product experience You'll need Strong design eye and proven ability with Figma Solid experience building front ends in React + Typescript Understanding More ❯

Senior Frontend (React/Vue) Developer - Contract - Airline Transformation A global airline is urgently seeking Frontend developers to support a large-scale transformation aimed at modernising their IT Suite across all business layers. Your primary responsibility will be to accelerate the migration of their front-end from Vue to React in applications that support their crew operations. You will work … who is tasked with leading the adoption of advanced analytical solutions. Rate: 700 Inside Location: Heathrow Airport, London Hybrid: Flexible Duration: 3months Requirements: Extensive experience building comprehensive UI using React and Vue (6years +) Deep understanding of modern front-end development best practices and architecture Experience with component-based architecture and design systems Experience working with diverse stakeholders such as More ❯

Staff Product Engineer | B-Corp Start-Up | Net-Zero Carbon Up to £125,000 plus stock London – Hybrid (2 days a week in the office) Typescript, Node, React, GraphQL & GCP Staff Product Engineer – We are working with an amazing Carbon Neutral, B-Corp certified start-up to find them a Staff Product Engineer to join their purposely small, experienced engineering … wider business to innovate and produce new ideas. Driving design discussions to solve real world problems and deliver on business goals. The tech stack is predominantly Typescript, Node and React on GCP, Kubernetes, GraphQL with some Rust although they are open to engineers from any background. You should apply if: You’re excited to build sustainable, net-zero products to … a chat. Staff Product Engineer | B-Corp Start-Up | Net-Zero Carbon Up to £125,000 plus stock London – Hybrid (2 days a week in the office) Typescript, Node, React, GraphQL & GCP More ❯

Product Engineer (React.js/Native, UI/UX) - 2/3 days a week in London numi is partnered with a technology company on a mission to make supply chains transparent and sustainable. They use earth observation and environmental monitoring to create a global data asset that will radically change how supply chain risk is managed. Our partner is a … Champion the UX: Translate complex geospatial and supply chain data into elegant and actionable visualizations. Build the Platform: Develop a scalable, responsive, and high-performance front-end application using React JS/Native . Collaborate: Work closely with the CEO and CTO to define the product roadmap. Who We're Looking For You are a seasoned product builder with a … track record of shipping high-quality, user-facing applications. You have deep experience building high-performance web map UIs with large cloud-native geospatial datasets. Must Have: Mastery of React JS/Native and its ecosystem , and specific experience with cloud-native geospatial data. Nice to Have: Proficiency with AI-powered development tools , and experience or interest in supply chain More ❯