276 to 300 of 313 React Jobs in London

role: Must-have Skills To be successful in this role, you must have: Strong fundamentals in Software Engineering. Direct experience with React and TypeScript (preferred), or Python combined with another programming language. Proven ability to adapt across different full-stack environments. Demonstrated high performance in fast-paced, dynamic environments. Strong ...

building and scaling backend systems. The position is heavily backend-focused , with Kotlin as a core technology, alongside Node.js and TypeScript. Frontend work (React) is secondary. We’re looking for a polyglot engineer , but with deep Kotlin experience , who can provide technical leadership, mentor engineers, and help drive delivery across … build scalable backend services with a strong focus on Kotlin Contribute to backend development using Node.js and TypeScript where required Support frontend development with React (secondary focus) Lead technical design and influence architectural decisions Mentor engineers and guide best practices across the team Work within a complex enterprise environment ...

months, with potential to extend, operating outside IR35. Essential skills/experience required: Proven previous experience as a full-stack engineer Python (Flask) React background Comfortable working in AWS-hosted environments (with EKS) Proficiency in Git-based development workflows Experience working independently and communicating effectively in distributed teams Desirable : Familiarity … Knowledge/interest in research or academic writings/publishing Role/Responsibilities: Backend development using Python (Flask) Maintain and improve the TypeScript/React-based frontend application. Build and manage containerised services deployed on AWS, utilising Kubernetes orchestration. Support data and transformation workflows (Spark) Diagnose, troubleshoot, and improve overall ...

environment alongside experienced engineers and product specialists, helping to shape the future of media technology. Key Responsibilities Develop and maintain scalable, high-quality JavaScript (ReactJS/TypeScript) code Collaborate closely with engineering and product teams to deliver new features and tools Contribute to backend services using Node.js Work with systems … efficient state management Ensure code quality through testing frameworks Build and deploy using AWS cloud infrastructure Skills & Experience Required Strong commercial experience with ReactJS Solid understanding of Node.js Experience with Rest API's and GraphQL Familiarity with testing - A/B Testing/Web Testing/Web Performance Proficient with ...

Staff Software Engineer/Developer (Java JVM Kotlin AWS React) Hybrid WFH to £120k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated … architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next.js on the front end. You'll be hands-on with architecture, design and coding, including complex business logic, authentication and security aspects, working across ...

Technical Lead (Senior Full Stack Developer) | Python, Django, React, Wagtail | Public Impact Digital Platform The Role You’ll step into a hands-on Technical Lead position where you will shape the direction of a nationally important digital platform used by millions. This is a true player-coach role, combining technical … summarisation, and guided user journeys, always with a strong emphasis on safety and reliability. What They’re Looking For Python development Django web frameworks React or modern JavaScript frameworks Wagtail CMS PostgreSQL or relational databases REST APIs, DRF or equivalent Docker and containerisation CI/CD pipelines, GitHub or GitLab ...

Full Stack Engineer | TypeScript, React, Node.js, AWS | Hybrid (Central London - fortnightly) | £70-90k Would you like to join a team focussed on cutting-edge technology, in an environment that propagates exploring new tools & techniques? I'm working with an established fintech organisation that provide essential backend services for thousands … need Strong commercial experience with full stack TypeScript development (it's ok to have a backend lean or be fully full stack (Node.js/React/Next.js) Good experience of AWS and exposure to DevOps (for example, they would love someone to be keen on learning Terraform if they ...

Full Stack Engineer | TypeScript, React, Node.js, AWS | Hybrid (Central London - fortnightly) | £70-90k Would you like to join a team focussed on cutting-edge technology, in an environment that propagates exploring new tools & techniques? I'm working with an established fintech organisation that provide essential backend services for thousands … need Strong commercial experience with full stack TypeScript development (it's ok to have a backend lean or be fully full stack (Node.js/React/Next.js) Good experience of AWS and exposure to DevOps (for example, they would love someone to be keen on learning Terraform if they ...

Ensure responsive design across desktop and tablet experiences, with strong attention to accessibility and usability best practices - Collaborate closely with frontend engineers (working in React, TypeScript, Tailwind CSS, and component libraries) to hand off production-ready designs and iterate based on technical constraints and user feedback - Contribute to UX research … variables, component variants, and design system management - Solid understanding of modern frontend technologies and design handoff processes; familiarity with Tailwind CSS, utility-first styling, React component patterns, or shadcn/ui is a strong advantage - Experience designing for financial or regulated environments, with knowledge of data visualisation, complex forms, dashboards ...

We are: Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. ...

solving for the patient?” before you ask “what stack are we using?”. You’re comfortable in TypeScript and at home in React/React Native/Node (or similar), and you like working across the stack rather than being boxed into a narrow layer. You enjoy fast feedback loops … build. If that sounds like you, there’s a London‐based healthtech scale‐up you’ll probably love. They’re building a single React Native/TypeScript platform that powers GLP‐1 weight loss journeys across the UK and US markets, aiming to reduce the burden of obesity, diabetes ...

have a current opportunity for a React Developer on a permanent basis. The position will be based in London. For further information about this position please apply. - 10+ years engineering; 5+ years building production React at scale - component lifecycle, rendering behaviour, and bundle architecture are instincts - TypeScript mastery in strict ...

have a current opportunity for a React Developer on a permanent basis. The position will be based in London. For further information about this position please apply. The Opportunity The ETrading Terminal is the interface through which professional traders and institutions access the world's most important commodity market - live … team follows, and push the boundaries of what a browser-based trading platform can do. Requirements 10+ years engineering; 5+ years building production React at scale - component lifecycle, rendering behaviour, and bundle architecture are instincts TypeScript mastery in strict mode - complex generics, discriminated unions, conditional types, and type-safe ...

leadership in a fast-paced startup environment Rapidly prototype ideas and help scale them into reliable production systems Occasionally contribute small frontend updates (React/TypeScript) Tech Requirements Must have: Java or Kotlin, Spring Boot MySQL, OpenSearch, AWS Nice to have: Groovy, Ruby on Rails, React/TypeScript Candidate Profile ...

global leader in the digital marketing space. The ideal candidate will be a Full Stack Engineer with experience with JavaScript, TypeScript, MongoDB, React and Node.js and are happy to work fully remote. THE ROLE: Design, deploy and maintain clean code Build scalable backend services in Node.js and TypeScript Design … PostgreSQL and MongoDB Troubleshoot all systems to ensure a smooth implementation THE PERSON: Full Stack Experience Familiar with JavaScript, TypeScript, MongoDB, PostgreSQL, Node.js and React Ability to work fully remote REFERENCE: BBBH24495 Keywords: Outside IR35, Remote, Software Developer, Software Engineer, JavaScript, Cloud, Remote, Contract, If you're interested in this ...

skilled Pricing Services and Risk Viewer UI Developer to join our dynamic team. This senior software development position requires excellent C# and TypeScript/React skills, a strong knowledge of pricing models, quant libraries and risk analytics for both vanilla and exotic FX derivatives. The successful candidate will collaborate closely … continuous improvement of coding standards, testing frameworks, and development practices. Required Skills & Qualifications: substantial experience in software development. Highly experienced in C#, TypeScript/React, and Quant Library integration. Solid understanding of mathematics as applied to derivatives risk and pricing. Excellent written and verbal communication skills in English. Experience working ...

scope, and long-term scale Shape the technical roadmap alongside product and data leaders Hands-On Engineering Develop high-quality front-end features using React (Vite) + Tailwind Design and ship scalable, type-safe APIs using Node.js, Express, and tRPC Optimise and maintain PostgreSQL databases and query performance Collaborate with … scaling SaaS platforms Experience leading architectural decisions and system design initiatives Strong full-stack capability in modern JavaScript/TypeScript environments Tech Stack Frontend: React (Vite), Tailwind Backend: Node.js, Express, tRPC Databases: PostgreSQL, Elasticsearch Strong adjacent experience is also welcomed. Nice to Have Experience in PropTech or data-heavy platforms ...

moving startup environment. Responsibilities Work with the existing development team to build and maintain features across the CASA platform Develop front-end functionality using React.js Build back-end services, APIs, and application logic using Node.js Work with MongoDB to manage, structure, and optimise application data Help ensure smooth integration between … platform performance, reliability, and user experience Collaborate effectively in a remote team environment Requirements Experience working across the full stack Good working knowledge of React.js, Node.js, and MongoDB Strong understanding of front-end and back-end development principles Ability to build and integrate client-side and server-side features Familiarity ...

documenting existing systems, with the goal of supporting decommissioning activities. The role centres on analysing current solutions built using Java, Node JS, and React, and developing a clear, end to end picture of how data flows across the wider programme. This includes documenting data flows, system dependencies, and underlying data … cloud environments such as AWS or Azure is expected, with Databricks considered a nice to have. Required Skills: Java background Node JS Json RDS React Data Modelling Python/Spark Cloud experience (AWS/Azure) o AWS Glue o Databricks Testing e.g. PyTest Data Quality e.g. Great Expectations ...

Role: React Front End Developer Type: Contracts (8 Months) Location: London, UK Working Model: Fully Onsite Initially (5 Days in Office) The Must-Haves: Advanced proficiency in React.js . Ability to act as a subject matter expert, manage the team to perform effectively, and take responsibility for team decisions. Proven ...

+ meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe ...

toward impact. We’d rather ship the wrong thing quickly and learn, than waste weeks polishing what nobody needs. Our tech stack: Primary: TypeScript, React, Node, SQL Frameworks: Express, React-hooks, Redux, RTK, Mantine Infrastructure: Docker, GCP, Kubernetes, Tracing, Prometheus While familiarity with our stack is helpful, we value your ...

Senior Front-End Engineer (React) - Contract We are looking for a Senior Front-End Engineer to lead the development of a greenfield React & TypeScript analytics platform. This role involves building a secure, high-performance web portal used for complex dashboards and data-driven workflows. Paying … with backend engineers, UX designers and security stakeholders while taking ownership of the front-end architecture, implementation and delivery quality. Key Responsibilities Build a React & TypeScript application from greenfield to production Develop data-heavy interfaces including dashboards, tables, filtering and workflows Implement robust state management and API integration Optimise performance ...

Fullstack Engineer (React/TypeScript/Python) 🚀 📍 London/Hybrid 💰Outside IR35 - rate depending on exp 📅 April start to September We’re supporting on a design and build of a specialist Management Information System (MIS) in the Education space and are looking for a Full Stack Engineer with strong experience … delivering production-grade applications across both frontend and backend. 🔑 The Role • Building a complexed app to handle data entry and visualisation • React (TypeScript) • Design & build scalable APIs using Python (FastAPI) • Owning end-to-end features across FE & BE • Contribute to architecture, code quality & best practices 🎯 What We’re Looking ...

systems, working closely with backend and product teams to deliver high-quality, performant user-facing applications. Role: Build and scale front-end applications using React and TypeScript Develop new features and improve existing functionality across products Work closely with product, design, and backend teams Ensure performance, reliability and strong … quality in production Requirements: Strong experience with React, TypeScript, and modern JavaScript Experience integrating with APIs and backend systems Experience within the Fintech/Crypto industry Good understanding of UX/UI design principles and building intuitive, user-friendly interfaces Benefits: Early-stage, high growth environment with real ownership ...