626 to 650 of 759 React Jobs in London

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 ❯

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 ❯

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 ❯

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 ❯

vision and architectural direction for Front End systems, ensuring performance, scalability, and maintainability across complex products. Lead design and delivery of modern, component-based web applications built with TypeScript, React, and Redux, integrating seamlessly with cloud-based APIs and data pipelines. Collaborate with engineering, design, and product leadership to define long-term Front End strategy, coding standards, and UX/… successful: Degree in Computer Science or equivalent hands-on experience. 7+ years in Front End software development, including experience in a lead or principal engineering capacity. Deep expertise in React, TypeScript, and modern Front End architecture (state management, component design, performance optimisation). Strong understanding of cloud-based infrastructures (GCP, AWS, or Azure) and how Front End systems integrate with More ❯

Your work blends full-stack development, platform architecture, and applied AI , turning research concepts into production-grade infrastructure. You’ll be hands-on across the stack, from TypeScript and React to orchestration, distributed systems, and AI agent tooling, ensuring everything you build is secure, observable, and enterprise-ready. This role demands both breadth and depth ; the curiosity of a researcher … build upon. You understand how modern stacks fit together, from AI pipelines to monorepos, and you enjoy architecting systems that are both powerful and tasteful. Your Hard Skills: TypeScript (React/Express) · RxJS · Tailwind · Docker · Nx/ArgoCD/GitOps · Private Registries TSC · TSX · pnpm/yarn · ESLint · Build Pipeline Hygiene Azure/AWS · IaC (Terraform/Pulumi) Enterprise Architecture More ❯

Your work blends full-stack development, platform architecture, and applied AI , turning research concepts into production-grade infrastructure. You’ll be hands-on across the stack, from TypeScript and React to orchestration, distributed systems, and AI agent tooling, ensuring everything you build is secure, observable, and enterprise-ready. This role demands both breadth and depth ; the curiosity of a researcher … build upon. You understand how modern stacks fit together, from AI pipelines to monorepos, and you enjoy architecting systems that are both powerful and tasteful. Your Hard Skills: TypeScript (React/Express) · RxJS · Tailwind · Docker · Nx/ArgoCD/GitOps · Private Registries TSC · TSX · pnpm/yarn · ESLint · Build Pipeline Hygiene Azure/AWS · IaC (Terraform/Pulumi) Enterprise Architecture 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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

LLMs with vector search, to push the boundaries of how AI can be applied to connectivity challenges. Our stack Backend: PHP (Laravel), Python (for AI/ML workflows) Frontend: React, Next.js (preferred), with flexibility for other modern frameworks Infrastructure: AWS (including Lambda, S3, DynamoDB), DigitalOcean Data: MySQL, Redis, NoSQL stores Dev tools: GitHub, CI/CD, Docker AI & Automation: LLM … in the UK. To apply, send your CV with a short cover letter using the apply button. We look forward to hearing from you. Tags: Lead Software Engineer, Laravel, React, Python, AWS, AI/ML, n8n, Claude Code, Cursor, Docker, Startups, DevOps More ❯

Full-Stack Developer (C#/React) London | Hybrid (3 days per week) | £80,000 to £90,000 base + bonus Ncounter are supporting a high-performing technology team as they expand their web engineering capability and continue to modernise the platforms that power real-time digital marketplaces. We’re looking for experienced Full-Stack Developers who enjoy variety, technical challenge … focus on reliability, modularity, and scalability across both front-end and back-end services. In the role you will: • Build and enhance web applications using C# (.NET 8) and React with TypeScript • Design reusable components and frameworks to accelerate product delivery • Collaborate closely with other engineers to define solutions and solve complex technical challenges • Contribute to peer reviews, documentation, and … testing, and continuous delivery improvements We’re looking for: • Strong hands-on experience across modern web technologies and frameworks • Proficiency in C# or an equivalent object-oriented language, plus React or similar JavaScript frameworks • A genuine interest in clean code, developer experience, and team-wide collaboration • Someone curious, pragmatic, and motivated to deliver maintainable, high-quality systems This is a More ❯

technology — building ultra-responsive, visually intuitive web interfaces for some of the most demanding users in finance. 🚀 What You’ll Be Doing: Building high-performance, data-intensive UIs using React and TypeScript Collaborating closely with back-end engineers, traders, and product teams Designing and refining complex front-end architectures for real-time data visualization Working in a culture where engineering … excellence and code quality are non-negotiable 🛠️ Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) ✅ What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance tuning, and More ❯

technology — building ultra-responsive, visually intuitive web interfaces for some of the most demanding users in finance. 🚀 What You’ll Be Doing: Building high-performance, data-intensive UIs using React and TypeScript Collaborating closely with back-end engineers, traders, and product teams Designing and refining complex front-end architectures for real-time data visualization Working in a culture where engineering … excellence and code quality are non-negotiable 🛠️ Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) ✅ What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance tuning, and More ❯

technology — building ultra-responsive, visually intuitive web interfaces for some of the most demanding users in finance. 🚀 What You’ll Be Doing: Building high-performance, data-intensive UIs using React and TypeScript Collaborating closely with back-end engineers, traders, and product teams Designing and refining complex front-end architectures for real-time data visualization Working in a culture where engineering … excellence and code quality are non-negotiable 🛠️ Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) ✅ What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance tuning, and More ❯

technology — building ultra-responsive, visually intuitive web interfaces for some of the most demanding users in finance. 🚀 What You’ll Be Doing: Building high-performance, data-intensive UIs using React and TypeScript Collaborating closely with back-end engineers, traders, and product teams Designing and refining complex front-end architectures for real-time data visualization Working in a culture where engineering … excellence and code quality are non-negotiable 🛠️ Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) ✅ What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance tuning, and More ❯

Job Tittle: Full Stack Developer - UI/React (Scala) Contract Length: 12 Months Location: Bromley (3 Days a Week Onsite) Working Pattern: Full Time (40 Hours per Week) Rate: Highly competitive rate available for suitable candidates Are you a passionate Full Stack Developer looking for an exciting opportunity to make a real impact? Join our client's dynamic team and … user-centric design! We are on the lookout for a talented individual who thrives in an Agile environment and has a flair for developing web-based UI solutions using React JS and Scala. Project Overview: You will be working on a cutting-edge React web application that functions as both a platform and an application. Your contributions will help enhance … core library consistency across products and tackle a significant backlog of development on the UI/React side. Get ready to dive into the fascinating world of self-generative AI, complex data management, and data visualisation supporting global markets! What You'll Do: Collaborate within a feature team to provide Operations Users with effective Workflow and Work Management for Trade More ❯

Job Tittle: Full Stack Developer - UI/React (Scala) Contract Length: 12 Months Location: Bromley (3 Days a Week Onsite) Working Pattern: Full Time (40 Hours per Week) Rate: Highly competitive rate available for suitable candidates Are you a passionate Full Stack Developer looking for an exciting opportunity to make a real impact? Join our client's dynamic team and … user-centric design! We are on the lookout for a talented individual who thrives in an Agile environment and has a flair for developing web-based UI solutions using React JS and Scala. Project Overview: You will be working on a cutting-edge React web application that functions as both a platform and an application. Your contributions will help enhance … core library consistency across products and tackle a significant backlog of development on the UI/React side. Get ready to dive into the fascinating world of self-generative AI, complex data management, and data visualisation supporting global markets! What You'll Do: Collaborate within a feature team to provide Operations Users with effective Workflow and Work Management for Trade More ❯

Job Tittle: Full Stack Developer - UI/React (Scala) Contract Length: 12 Months Location: Bromley (3 Days a Week Onsite) Working Pattern: Full Time (40 Hours per Week) Rate: Highly competitive rate available for suitable candidates Are you a passionate Full Stack Developer looking for an exciting opportunity to make a real impact? Join our client's dynamic team and … user-centric design! We are on the lookout for a talented individual who thrives in an Agile environment and has a flair for developing web-based UI solutions using React JS and Scala. Project Overview: You will be working on a cutting-edge React web application that functions as both a platform and an application. Your contributions will help enhance … core library consistency across products and tackle a significant backlog of development on the UI/React side. Get ready to dive into the fascinating world of self-generative AI, complex data management, and data visualisation supporting global markets! What You'll Do: Collaborate within a feature team to provide Operations Users with effective Workflow and Work Management for Trade More ❯

a Mid-Senior Front-End Developer to join our clients' dynamic engineering team, building user-centric web applications that scale to thousands of customers. You will work primarily with React , TypeScript, and modern front-end technologies to deliver responsive, performant, and accessible interfaces. Collaborating closely with designers, backend engineers, and product managers, you’ll turn complex requirements into intuitive, polished … As a senior contributor, you will influence the front-end architecture, enforce best practices, and ensure high code quality across the team. The ideal candidate has professional experience with React, TypeScript, and modern JavaScript frameworks , along with a strong understanding of component-based architecture, state management (e.g., Redux, Zustand, or Recoil), and front-end performance optimization. Experience with RESTful APIs … GraphQL, and testing frameworks (Jest, React Testing Library, Cypress) is highly desirable. You should be comfortable mentoring junior engineers, conducting code reviews, and helping the team adopt scalable, maintainable practices. This role offers an exciting opportunity to own the front-end experience in a fast-paced, innovative product environment. Requirements & Qualifications 4+ years of professional front-end development experience, with More ❯