101 to 125 of 386 React Jobs in the City of London

Development: Contribute to both front-end and back-end development of applications and APIs interacting with the Azure Databricks platform. Develop user interfaces using modern front-end frameworks (e.g., React, Angular, Vue.js) and ensure a seamless user experience. Develop robust and efficient back-end services and APIs using Python. Python Development: Develop and maintain Python code for data processing, API More ❯

lifecycle, including coding standards, code reviews, source control management, build processes, testing, and operations. Proficient in full-stack development with JavaScript and Next.JS. Strong background in frontend development using React and Tailwind CSS. Skilled in managing large databases like PostgreSQL. Familiarity with container orchestration tools such as Docker and Kubernetes. Hands-on experience with LLM libraries like LangChain, LangGraph, LlamaIndex More ❯

of technical talent. Ideal Candidate Profile Technical Skills Proven experience with cloud platforms and infrastructure-as-code tools. Advanced proficiency in backend (e.g., Python, Node.js) and frontend (e.g., TypeScript, React) technologies. Strong understanding of modern database technologies and integration patterns. Familiarity with CI/CD pipelines, containerization, and serverless architecture. Professional Experience 6+ years in software engineering, including leadership and More ❯

a business. A strong orientation towards customer needs (specifically SMEs), excited by building technology that solves customer problems and builds customer delight. Familiarity with our core technologies: Languages: TypeScript, React, Python, Java Databases: PostgreSQL, BigQuery, MySQL. Cloud & DevOps: AWS + GCP, Kubernetes, Docker, Terraform, GitHub, GitHub Actions. If you are a seasoned engineering leader ready to make a significant impact More ❯

a software development role building cloud-driven SAAS products, with a focus on building and maintaining infrastructure and backend services. Full stack experience with other languages and frameworks (e.g. React, Vue, iOS, Android) is a plus, but not required. Familiarity with modern backend frameworks and languages such as Golang, Java, C++, Rust, Python A solid academic background, ideally from a More ❯

software engineering , solution architecture , product thinking , and customer-facing communication . 🛠️ What You’ll Work With: Backend and integration work with Python , Node.js , and TypeScript Front-end work using React Cloud infrastructure via AWS APIs, data pipelines, and custom tooling for real-world deployments Opportunity to work with ML/AI systems at the integration level (no prior ML required More ❯

Ansible , and other infrastructure automation tools. Security & Compliance: Understanding of cloud security, identity management, and regulatory compliance (GDPR, SOC2, ISO 27001, etc.) . Programming & Frameworks: Proficiency in languages like React, Python, Go, or Node.js , with a strong understanding of modern frameworks . Experience Requirements: Bachelor’s or Master’s degree in Computer Science, Engineering, Cloud Computing, or a related field. More ❯

experience in software design and development, and hands-on experience in building UI heavy experiences. Necessary Strong proficiency in modern design patterns and development languages including JavaScript, Typescript (and React), HTML and CSS, Liquid Strong proficiency in Figma and design principles Experienced with writing custom Web Components Experience working in large-scale international eCommerce teams Solid grounding with common design More ❯

or supporting connected devices or remote systems Working with Linux-based systems CI/CD, Docker or Kubernetes Internal tooling, API design and service orchestration Frontend technologies such as React Networking, messaging protocols or event-driven systems We encourage applications from candidates with transferable skills or experience from different sectors. If you’ve solved similar challenges elsewhere, we’d love More ❯

or supporting connected devices or remote systems Working with Linux-based systems CI/CD, Docker or Kubernetes Internal tooling, API design and service orchestration Frontend technologies such as React Networking, messaging protocols or event-driven systems We encourage applications from candidates with transferable skills or experience from different sectors. If you’ve solved similar challenges elsewhere, we’d love More ❯

Mid & Senior Full Stack Engineers | Green Tech/Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £110K + Healthy Equity Company: I'm looking for mid and senior full stack engineers who are excited about elegant systems as they are about real-world impact. You’ll join a lean, talented team of engineers and work … 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 Mid & Senior Full Stack Engineers | Green Tech/Energy Tech Start-Up | React.js … Node.js TypeScript | LDN 2 Days Per Week | £50K - £110K + Healthy Equity -> 5 years commercial experience -> 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 Mid & Senior More ❯

have fun along the way. So why not join us at FairPlay and be part of something bigger... What we are looking for: We are seeking a seasoned Principal React Enginee r to lead the development of high-performance, scalable, and user-centric web applications. This role demands a blend of hands-on coding expertise, architectural acumen, and leadership capabilities. … be instrumental in setting technical direction, mentoring team members, and ensuring the delivery of top-tier frontend solutions. Key Responsibilities: Architectural Leadership: Design and implement robust frontend architectures using React.js, ensuring scalability and maintainability. Component Development: Develop and maintain reusable components and libraries to streamline development processes. Performance Optimization: Continuously monitor and enhance application performance, ensuring optimal load times and … when beneficial to the project. Qualifications: Experience: Minimum of 7 years in frontend development, with at least 3 years in a leadership or principal role. Technical Proficiency: Expertise in React.js and its core principles, including state management (e.g., Redux, Context API), hooks, and lifecycle methods. Testing: Proficiency in testing frameworks such as Jest, React Testing Library, and end-to-end More ❯

React Software Engineer Location: Belfast or London (hybrid flexibility) A well established digital product studio with offices in Belfast and London, the company specialises in designing, building, and scaling data-driven digital products and services. Their work spans strategy, UX/UI design, software engineering, and analytics, partnering with a range of high-profile clients to deliver impactful solutions. Known … growth making it a great environment for engineers who want to work on meaningful, modern web applications. What You'll Do Design, build, test, and maintain modern, high‐performance React applications (covering ES6+, Redux, React Router, Next.js, React Query, or similar). Develop mobile‐first, responsive UIs with clean, scalable, and secure code. Work across the stack, integrating with REST … backend services. Estimate effort, scope technical designs, and communicate clearly with stakeholders. Mentor and share knowledge with team members while learning new technologies. What We're Looking For Strong React experience, plus familiarity with at least 3 of: Vanilla JS (ES6+), Redux, React Router, TanStack, Next.js, React Query, React Native, TypeScript. Solid testing background and attention to performance, security, and More ❯

TypeScript Engineer (React + Node) - £80K - Hybrid, London After achieving a £1m grant from Innovate UK, an impressive start-up that is transforming portfolio management, by streamlining data collection and enhancing collaboration between investors and their portfolio companies, are looking for a Fullstack Engineer to join their small but growing team of 13. The ideal candidate will have … years' experience with a strong technical foundation, combined with a business and product-focused mindset. Proficiency in NextJS (React), GraphQL, and TypeScript is required. Key Responsibilities: Design, develop, and maintain web applications using NextJS (React), GraphQL, and TypeScript Collaborate with cross-functional teams to define, design, and ship new features Ensure the technical feasibility of UI/UX designs Participate … in code reviews, pair programming, and collaborative development practices Troubleshoot and debug issues to improve performance and reliability Qualifications: Proven experience as a Software Engineer, particularly with NextJS (React), GraphQL, and TypeScript Strong understanding of web development principles and best practices. Familiarity with modern software development practices, including agile methodologies Excellent problem-solving skills and attention to detail Strong communication More ❯

Lead Software Engineer Technical Lead | TypeScript | Node | React | AWS | AI London | Hybrid (2 days/week in-office) Up to £105,000 (DOE) + Bonus Tech Stack: TypeScript, Node, React, AWS, Kubernetes. We are currently working with a global travel business who have a number of exciting projects planned. Following a successful system upgrade, theyre now investing heavily in innovation … on AI, automation, and cloud-native practices. Youll work with a mature engineering culture that values innovation, clean architecture, and continuous improvement in a Full Stack TypeScript ecosystem (Node.js & React) What Youll Be Doing Leading the design and development of scalable, high-traffic systems Championing engineering best practices across the team Building full-stack applications in TypeScript (Node & React) Shipping … top-tier solutions You Should Have: 5+ years as a software engineer, with recent experience in a Lead role Deep backend knowledge using Node.js , with full-stack ability in React Cloud experience, ideally with AWS (Lambda, EKS, RDS) and Kubernetes Exposure to AI tools or automation workflows (desirable!) Familiarity with GraphQL , CI/CD, and Infrastructure as Code (Terraform) A More ❯

Lead Engineer (React + Node) - £90K - Hybrid, London After achieving a £1m grant from Innovate UK, an impressive start-up that is transforming portfolio management, by streamlining data collection and enhancing collaboration between investors and their portfolio companies, are looking for a Fullstack Engineer to join their small but growing team of 13. The ideal candidate will have … and freedom to make technical decisions. You can either be a Lead already or a Senior with experience mentoring engineers + taking the lead on projects. Proficiency in NextJS (React), GraphQL, and TypeScript is required. Key Responsibilities: Design, develop, and maintain web applications using NextJS (React), GraphQL, and TypeScript Collaborate with cross-functional teams to define, design, and ship new … when the CTO is unavailable/off Qualifications: Experience in a Senior/Lead role with mentoring + project leadership Proven experience as a Software Engineer, particularly with NextJS (React), GraphQL, and TypeScript Strong understanding of web development principles and best practices. Familiarity with modern software development practices, including agile methodologies Excellent problem-solving skills and attention to detail Strong More ❯

marketing and analytics features . Support the migration from Flask to Django Adapt RESTful APIs to support integrations with CRM, marketing automation, and analytics platforms. Enhance the frontend using React and TypeScript , ensuring intuitive visualization of analytics data. Implement event tracking, attribution models, and A/B testing frameworks . Deploy and monitor applications using AWS (EC2, S3, CloudFormation, ECS … e.g., dashboards, tracking systems, attribution models). Strong experience with Django (or Flask) and PostgreSQL . Solid understanding of data pipelines, event tracking, and API integrations . Proficiency in React, TypeScript, and frontend visualization frameworks (e.g., D3.js, Chart.js, Recharts) . Hands-on experience with AWS services (EC2, S3, CloudFormation, ECS). Experience with CI/CD pipelines, DevOps best practices More ❯

design-led environment. 💼 What You’ll Own Own and evolve a robust, scalable design system that supports rapid product development across the organisation. Translate Figma designs into production-ready React components using TypeScript & Next.js Define and drive best practices in UI architecture, testing, accessibility, and performance. Collaborate closely with product and design teams to align vision with execution. Champion a … role in hiring and scaling the UI function as the company continues its rapid expansion. 🧠 What You Bring 7+ years of front-end engineering experience with deep expertise in React and TypeScript. Proven expertise in UI engineering, with a strong track record of building and maintaining design systems/internal tools & libraries (Library maintainer!) Mastery of JavaScript fundamentals, browser APIs More ❯

and mentoring other engineers Building greenfield features that solve real-world problems Driving quality and innovation across the engineering team What They’re Looking For: Deep experience with TypeScript , React , Python , AWS , PostgreSQL , and an interest in AI (GenAI a plus!) Bonus points for experience with other backend languages like Go , Elixir , Clojure , Ruby , C++ , Haskell , Scala , etc - Even more More ❯

real-world positive impact at scale? We’re recruiting a Senior Fullstack Engineer for a fast-growing EV charging scale-up. You’ll be working with Python (FastAPI) , Javascript (React), replacing a legacy platform. This is a hybrid role, perfect for engineers who want to build critical backend systems and shape the future of sustainable transport with clean, elegant code. … What You’ll Be Doing: ✔ Developing fullstack solutions using FastAPI and React.js ✔ Designing scalable RESTful APIs and microservices ✔ Collaborating with product and UX teams to deliver a seamless user experience ✔ Mentoring junior engineers and shaping best practices across the codebase Tech Stack Highlights: 🔹 Python , FastAPI , React , TypeScript 🔹 Docker, Terraform, AWS 🔹 Strong API design & database architecture Why This Role? → Join a More ❯

Job Title: Senior Front-End Developer/React Developer Duration: 6 Months Location: London Area, UK (2 Days per week) 8 Hours a day - 40 Hours Per week. What you'll do: Create extremely well-crafted front-end web applications using React.js and Next.js Support and develop Server Side Rendered (SSR) web applications, making use of AWS Lambda Write resilient … that the code written is in line with the department’s technical strategy— performant, resilient, secure , and well monitored web applications. What you'll bring: Solid commercial experience in React/Redux development Good understanding of development best practices such as TDD, continuous integration and continuous delivery Good understanding of/experience with CI tools (Jenkins, Concourse) and testing frameworks More ❯

a dynamic, collaborative environment. This is an exciting opportunity for a technically strong and values-driven engineer who wants to work with purpose and impact. Tech Stack Frontend : ES6, React, Redux, React Hooks, Cordova Backend : Node.js, Express, TypeScript, Sequelize, PostgreSQL Infrastructure : Heroku, AWS, Twilio CI/CD : Heroku Pipelines, Bitbucket Pipelines, Bitrise, Jenkins Key Responsibilities Build and enhance responsive user … interfaces using React.js and Redux Develop and maintain backend APIs using Node.js and Express.js Contribute to the delivery of cutting-edge web and mobile apps across devices Maintain high coding standards through reviews, documentation, and collaboration Diagnose and respond to time-sensitive issues with clarity and calm Promote a technology-agnostic, solution-oriented mindset within the team Balance technical quality More ❯

FULLSTACK ENGINEER -SaaS STARTUP- NODE, REACT, TYPESCRIPT, JAVASCRIPT About the Company: We've partnered with a high growth SaaS company having recently completed their Series A and are scaling. They have built an insights and analytics platform already being used by some of the worlds biggest brands. You'll deliver nascent technology revolutionising how brands engage with new audiences! About … who can add value to the team culture. In a small startup, we value proactiveness, problem solving, thinking outside the box and being a team player! Technologies include Node, React, AWS, Typescript ,Javascript, Kubernetes, Docker and more. Location: The role is hybrid, working out of their central London offices. FULLSTACK ENGINEER - SaaS STARTUP - NODE, REACT, TYPESCRIPT, JAVASCRIPT, AWS, FULLSTACK More ❯

Manager to join their team. This is a 12-month fixed-term contract, offering up to £95K, with a 60% hands-on, 40% management split. Tech Stack: ✅ Frontend: TypeScript, React, Nx, Vercel, CSS ✅ Backend: Node.js, Next.js, GraphQL ✅ Cloud: AWS, GitHub/GitLab, CI/CD, Serverless ✅ Data: SQL, NoSQL ✅ Mobile: React Native About You: 🔹 Strong technical expertise with modern frontend More ❯

Frontend Lead (Next.js, React Native) I’m working with a fast-paced, tech-focused, global technology platform that’s undergoing a multi-year transformation program to revolutionize its B2C services. Backed by substantial investment and part of a financially stable group, this company is embarking on a multi-year transformation program, making now the perfect time to join their journey. … internal development team for knowledge transfer, reviewing code to help and guide other engineers. Ensuring best practises working in an Agile/Scrum/Kanban environment. Requirements Proficiency in React, React Native, and Next.js is a strongly required. Proficiency in Frontend technology i.e. Javascript, Typescript, HTML, and CSS. Familiar with RESTful APIs and GraphQL Experience architecting web applications and supporting … underlying CI/CD platforms. Consider the reusability of code, components, and module development while writing code. Experience mentoring junior engineers. Understands testing such as Vitest, React Testing Library and Playwright. Experience working in AWS. You have a Start-up mentality. Apply now More ❯