201 to 225 of 251 React Jobs in the Thames Valley

join a forward-thinking company producing award-winning software used by leading businesses across the globe. The successful Senior Frond Developer will need to have extensive commercial experience using ReactJS and should be comfortable working to their own initiative but also happy to mentor and offer guidance to the more junior members of an already successful team. This is predominantly … functional system. Develop software verification plans and follow quality assurance procedures. Document and maintain software functionality. Mentor junior developers Follow a specific build and deployment process. Skills required: Extensive ReactJS experience Be familiar with Agile development practices, including Continuous Integration and 5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 … comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior staff Code reviews and technical guidance. Degree level education in an engineering/software in beneficial Good understanding of asynchronous request handling, partial page updates. If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson on or More ❯

join a forward-thinking company producing award-winning software used by leading businesses across the globe. The successful Senior Frond Developer will need to have extensive commercial experience using ReactJS and should be comfortable working to their own initiative but also happy to mentor and offer guidance to the more junior members of an already successful team. This is predominantly … functional system. Develop software verification plans and follow quality assurance procedures. Document and maintain software functionality. Mentor junior developers Follow a specific build and deployment process. Skills required: Extensive ReactJS experience Be familiar with Agile development practices, including Continuous Integration and 5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 … comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior staff Code reviews and technical guidance. Degree level education in an engineering/software in beneficial Good understanding of asynchronous request handling, partial page updates. If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson on (phone More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they’re looking … day — thanks to a rock-solid CI/CD setup Collaborate closely with product, design, and leadership to shape the roadmap Tech stack you’ll be working with : TypeScript, React, Node.js, AWS Serverless (Lambda, DynamoDB, EventBridge) What you’ll be doing: This isn’t just about writing code, it’s about owning problems end-to-end and influencing every part … observable as we scale to hundreds of enterprise customers. Collaborate closely with product, design, and leadership to set roadmap priorities and define technical strategy. Work across the stack — from React frontends to AWS serverless backends — and own your projects from infrastructure to styling. Deploy continuously (multiple times per day) using their robust CI/CD pipelines. Mentor other engineers and More ❯

Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software Developer … specing out, designing and developing of UI screens for the users. This will require you to have client facing experience as well as low levy programming with JavaScript and React Development experience. Their systems cover all asset classes from FX, Fixed Income, Interest Rates and Commodities including derivative products although this knowledge is not essential but would be advantageous. The … application is a Real Time Trading application which displayed 1000’s points of Data for Trading decisions. Key Tech Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial More ❯

Wipro is seeking a Senior Full Stack Developer to join our high-performing engineering team. As the Senior Full Stack Developer, you will focus on both frontend (Angular/React) and backend development with .NET Core, driving scalable and efficient digital solutions. You'll work closely with a dynamic, Agile team that thrives on continuous improvement and innovation. About Wipro … pension, and access to quarterly bonuses. Your Responsibilities As a Senior Full Stack Developer, you will: · Develop and maintain modern full stack applications using .NET Core and Angular/React · Contribute to Agile ceremonies and collaborate on sprint planning, coding, testing, and reviews · Implement Infrastructure as Code (IaC) and CI/CD pipelines with Azure DevOps · Apply design patterns, best … to improve performance · Act as an individual contributor, delivering hands-on development and analysis Mandatory Skills You’ll bring expertise in: · Full stack development (.NET Core backend, Angular/React frontend) · Azure DevOps CI/CD pipelines and YAML configuration · Unit testing frameworks for .NET applications · Agile methodology and cloud design patterns · Azure services (minimum of 3) such as App More ❯

company’s clients and customer success team to identify the source of a technical problem and then fixing those problems. This role covers a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this is a great opportunity to learn and expand all those skills. What we’re looking for from a Back … the company’s platform features and technologies from the ground up. Experience needed as a Back End Developer: 3+ years of Node.js development Type Script/Strong JavaScript skills React REST API development SQL Git More ❯

Senior Software Engineer - Full Stack - TypeScript, Node React, AWS, Serverless, DynamoDB - Energy & Utilities Cleantech SaaS Location: Hybrid/Remote - London (flexibility available) Salary: Up to £80,000 About the Company This role is with, in our opinion, one of the most exciting SaaS firms in the energy and utilities space, delivering cleantech solutions to major businesses worldwide. Their mission is … up-to-date with industry trends and best practice in cleantech and SaaS development. Skills & Experience: Strong experience with TypeScript in both frontend and backend development. Proficiency with Node.js, React and building serverless applications. Experience with AWS services, particularly Lambda and DynamoDB. Familiarity with software development best practice, including testing, CI/CD and version control. Passion for writing clean More ❯

technologist who wants to work across the stack, learn from experienced engineers, and contribute to building meaningful software from day one. You’ll be working with modern web technologies — React, TypeScript, Next.js, Tailwind CSS — with the backend hosted on AWS. This is a hands-on role where you’ll get real responsibility quickly, and the chance to develop your skills … of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a modern tech stack and learn from experienced More ❯

your growth is supported, and your work helps shape a platform used every day by modern companies. What you will do: Implement and maintain features across the stack using React, TypeScript, Node.js, NestJS, PostgreSQL and AWS Collaborate closely with senior engineers, product and design to deliver well-scoped features from start to finish Participate in code reviews, share knowledge and … ECS, RDS, S3, SES, CloudFront, CDK) with support from senior teammates. What we are looking for: Proven experience shipping fullstack features in a product-driven team String skills with React, TypeScript, Node.js, and PostgreSQL Working knowledge of AWS services (ECS, RDS, S3, CloudFront, etc. Hands on with modern workflows and tooling, for example GitHub, GitHub Actions, Linear, Sentry Ability to More ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. The company operates at the … example through code reviews and mentoring. Maintain a user-centred mindset , constantly measuring and iterating on how engineering decisions translate into product value. Technical Environment: Languages & Frameworks : Python, TypeScript, React, Svelte Infrastructure & Tools : AWS, PostgreSQL, Snowflake, CI/CD pipelines Ways of Working : Agile squads, continuous delivery, outcome-oriented culture You’ll work in a collaborative, engineering-led environment where More ❯

years of industry experience to join the London based Engineering team. You'll ideally have experience using some of the following stack: Backend: Python, Flask/FastAPI Frontend: React with TypeScript Infra: Terraform, GCP/AWS Ideally you'll have at least an interest and have tinkered personally with LLM type projects. Huge bonus if you have commercial experience in More ❯

Language) 🐍 Solid full-stack development experience. Proven experience in environments where GenAI is utilised in the development workflow Full Tech Stack: Backend & Data: Python, PostgreSQL, BigQuery, MySQL Frontend: TypeScript, React, styled-components Testing: Jest, React Testing Library, Cypress, pytest Cloud & Infra: AWS, GCP, ECS Fargate, Docker, Terraform, GitHub Actions This is a unique opportunity for an engineer who understands what More ❯

Contract Python Fullstack Software Engineer | £600-£800/day IR35 Exempt Python Software Engineer (Python, ReactJS, Kubernetes) £600-£800/day Initial 6 Month Duration IR35 Exempt Hybrid - Central London (3 days a week) We are partnered with a well-funded scale up in the BioTech sector who are developing software to support autonomous robotics. They are building cutting edge … design. Experience building scalable software in Python, contributing to the end to end software development process Ability to contribute in areas such as DevOps (Kubernetes) and Front end development (ReactJS modifications) Experience working with AWS Experience influencing the architecture and design of applications Tech Stack - Python, ReactJS, Kubernetes, APi's, websockets, AWS Contract Python Fullstack Software Engineer | £600-£800/ More ❯

Senior Developer |React |TypeScript| Node | 3 Months | Up to £550 per day (Outside IR35) We’re looking for a skilled Front End Developer to join a fast-paced project environment. You’ll work closely with a cross-functional team to deliver high-quality, scalable web applications using modern technologies. Key skills: Essential: Strong commercial experience with JavaScript , React , and Node.js … month initial contract with potential for extension Up to £550 per day, Outside IR35 Hybrid working: 2 days onsite in London If you have strong commercial experience in JavaScript, React, and Node, and are available for your next contract, we’d love to hear from you. More ❯

WHAT YOU’LL BRING Strong experience with Service Fabric and Kubernetes Proven experience architecting and scaling B2B SaaS platforms Strong full-stack technical expertise – especially across C#, JavaScript, and React Experience integrating with APIs and identity platforms (e.g. Microsoft Entra ID/Azure AD) Solid understanding of cloud infrastructure – ideally Azure and Service Fabric A collaborative mindset – comfortable working across … product, engineering, and client delivery A pragmatic, hands-on approach to problem-solving and decision-making Background in IAM or SSO is a bonus OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming how the frontline workforce connects Help More ❯

Founding Software Engineer (React and Python) About the Opportunity You will be joining an elite founding engineering team that includes the world’s number one authority in Multi Agent Reinforcement Learning, seasoned Meta Product leaders, and one of the only people in the UK who has trained a trillion token language model from scratch. This role is based in London … technology critical environments • Deep familiarity with large scale model training and production deployment, especially for reinforcement learning or transformer based architectures • Hands on experience building and maintaining Frontend applications - React, Typescript • Strong programming background in Python and or relevant frameworks such as TensorFlow, PyTorch or Hugging Face • Fluent in cloud native development, containerisation, orchestration (for example Docker or Kubernetes) and More ❯

something with. Proper ownership. Fast cycles, low ceremony, and room to shape architecture while mentoring others. What you’ll work with as a Staff Software Engineer Stack: Python, TypeScript, React, Svelte, PostgreSQL, Snowflake, AWS. Setup: Cross-functional squads that care about outcomes, not ticket-ticking. You’ll improve scalability, evolve architecture, and still ship. I like that balance. Less pontificating … re just curious, I’m happy to share the full brief and talk through fit. Senior Software Engineer London, Staff Software Engineer, Principal Engineer, Fintech jobs London, Python, TypeScript, React, Svelte, PostgreSQL, Snowflake, AWS, scalable systems, distributed systems, hybrid jobs London #hiring #softwareengineering #seniorsoftwareengineer #principalengineer #staffengineer #fintech #londonjobs #python #react #typescript #aws #postgresql #snowflake #careers More ❯

seamless experience for high-net-worth clients. You’ll lead one of three cross-functional squads (around nine people including Engineers, QA, BA, and Scrum Master), combining hands-on React/TypeScript development with strategic leadership across architecture, delivery, and stakeholder management. ✨ What you’ll do Lead and coach a high-performing engineering squad 👥 Stay hands-on with React, TypeScript … modern UI frameworks 🛠️ Own technical strategy, architecture, and delivery 📐 Collaborate with product and business teams to align technical decisions with client needs 💡 Drive innovation, quality, and continuous improvement 🚀 🛠 Stack: React, TypeScript, JavaScript (React Query, Highcharts; Java + AWS a bonus) 🏢 Hybrid: 2 days per week onsite in central London 💰 Package: ~£140k+ (Up to £110k base + bonus + pension + More ❯

applied machine learning or MLOps (not just academic or notebook-based work) Exposure to event-driven architectures, streaming systems (Kafka, etc.), or real-time data pipelines Frontend experience in React, TypeScript, or similar modern frameworks 📈 What We Offer Early-stage equity and the opportunity to shape foundational decisions High ownership, zero bureaucracy — build what matters, fast Founders who value engineers More ❯

Understand, respond to, and address customer needs and issues with empathy and timeliness. Required Skills: Proficiency in Python or another typed, object-oriented programming language Proficiency in Javascript and React would be highly beneficial Good knowledge of software methodologies, tools, and typical architectural patterns. Experience with trading and risk management solutions is preferred, but not essential. Experience designing and building More ❯

Frontend Developer - React and TypeScript - Up to £500/day (Outside IR35) - Hybrid (London) - 3 month contract My client is seeking an experienced Frontend Developer to join their team. You will need strong commercial experience in working with React and TypeScript. Essential Skills: Strong commercial experience with React and TypeScipt. Experience configuring, deploying, and monitoring applications on Azure. TDD (Test More ❯

Staff Software Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £160,000 plus excellent stock options London – 2 days a week Next.js | React | Typescript | Node | Python Are you a product-focused Staff Software Engineer who enjoys autonomy and wants to build products from end-to-end? If so, read on... Staff Software Engineer – We have been exclusively … have found product market fit for their industry disrupting, AI-powered SaaS platform. The Staff Software Engineer will have a high degree of autonomy, using modern technology like Next.js, React, Typescript/Node and Python to design and build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They believe in building … for them? The Staff Software Engineer will have experience of leading the design and build 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 ❯

and scale backend systems powering payments, returns, personalisation, and more. Lead API-first development , data modelling, and performance optimisation. Build reliable systems in TypeScript , working across the stack with React on the frontend. Own deep integrations with Shopify APIs and third-party services (not just theme edits). Collaborate closely with product and design in a lean, high-impact team. … Embrace automation and AI tooling to accelerate delivery and maintain quality. Tech Stack Languages: TypeScript (core), Python/Ruby (data flows) Frontend: React (preferred), Node.js welcome Infrastructure: AWS Databases: RDBMS (essential), Neo4j (nice-to-have) Integrations: Shopify APIs, payment gateways, fraud tools You’ll Thrive Here If You... Have strong backend engineering fundamentals (schema design, query optimisation, scalable architectures). … scale. Interview Process 30-min culture & tech fit conversation 60–90 min technical scenario interview (no whiteboarding) Offer Ideal for senior full stack or backend engineers with TypeScript/React/AWS experience who want to shape architecture at a growing, product-led company. More ❯

Country-wide data tools through large-scale scraping + mapping -> Hardware integrations (e.g. bluetooth laser measures, sensors) -> Offline-first/PWA apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days … Per Week | £50K - £110K + Healthy Equity -> 2+ years commercial experience -> STEM Background -> React + TypeScript (you’re confident building fast, dynamic UIs) -> SQL and relational database design -> RESTful APIs and distributed systems -> Scalable and secure architectures -> Owning features end-to-end, from shaping the product idea to shipping the code. Type of engineer for Carbon Emission/Green Tech More ❯

Graduate Software Engineer - JavaScript/React/Node | £40–50K | Camden (Hybrid) Join a VC-backed AI SaaS startup that's helping chemical and cosmetics companies launch products globally - solving complex regulatory problems through software. They've raised £3M seed, hit £500K+ in revenue, and are building an all-star team of devs from top UK universities. You’ll work … Have a 1st class degree from Imperial, UCL, Cambridge, Oxford, Durham, Bath, etc. Have a passion for building (show us your GitHub or side projects!) Are confident with JavaScript, React, Next.js, Tailwind, Node.js Care about clean code, thoughtful UX, and solving problems end to end Are London-based and up for 3 days/week in our Camden office (Mon More ❯