26 to 50 of 76 React Jobs in the City of London

What they’ll actually do Design interactions for AI-driven products: chat, generative tools, recommendation systems, agentic flows Build high-fidelity coded prototypes in React to test concepts with real customers Use AI tooling (Figma, Cursor, Kiro, Claude Code, custom plugins) to prototype and iterate at speed Build reusable ...

SaaS Platform | Tripled ARR in 12 months Remote-first (UK) with hybrid London office option Up to £130,000 + equity Typescript/Node, React, GCP/AWS Senior Product Engineer We're working with a rapidly scaling AI-native SaaS company who raised an impressive Series B round ...

prod: one for clinical users and one for patients. Our stack is currently entirely in JS/TS: Angular + Capacitor + Electron, React (internal tools), Amplitude (analytics), a fully serverless backend in AWS (Cognito, Appsync GraphQL, Lambda, DynamoDB). We have good functional & unit test coverage and CI/ ...

feature development across the stack, from concept to release, and help shape the product experience. The ideal candidate has strong Node.js/TypeScript and React experience, plus familiarity with GCP or AWS. #J-18808-Ljbffr ...

decisions impacting various components of the business. The ideal candidate has over 4 years of experience in web application development, with strong skills in React and TypeScript, and must be comfortable integrating with AI tooling and databases. This is a hybrid role with competitive salary and benefits. #J-18808-Ljbffr ...

engaging, energetic and commercially aware personality The ability and desire to operate in a very fast-moving startup with significant ownership Strong TypeScript/React and Python experience would be particularly relevant, as would experience deploying AI or LLM-powered products into production. We’ll also consider exceptional engineers from ...

remote-first, UK-focused setup with a hybrid London office option. The successful candidate will shape the frontend experience for thousands of users, leveraging React, TypeScript, and Node, with cloud platforms (GCP/AWS) to scale features and systems. #J-18808-Ljbffr ...

SaaS scale-up in the UK. We seek an Engineering Lead to guide small squads (up to 4 engineers) while staying hands-on across React, Node.js/TypeScript, and GCP/AWS. You’ll help shape scalable features and mentor engineers as the product expands. The role is remote-first ...

management, logging/tracing, evals) Experience designing large-context LLM systems (RAG, knowledge graphs, hybrid search, memory) Building features end-to-end with TypeScript, React.js, and Node.js As a person, you... Are first and foremost a builder. Are excited to work in-person from our office in London (most ...

Must-Haves Front-End Excellence with Full-Stack Agility You’re confident writing modern, scalable front-end code with tools like TypeScript, Next.js/React, and component libraries (we use Tailwind, Radix UI and our own customer design system) You know your way around backend APIs, cloud platforms, and build ...

Group Overview The TP ICAP Group is a world‐leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of ...

renewable energy startup located in London is seeking a skilled Web Developer to create and maintain responsive applications using modern technologies like React and TypeScript. The ideal candidate should have over 5 years of experience in web development, proven success in launching consumer-facing products, and strong collaboration skills. This ...

Product roadmap Managing a team consisting of a range of skillsets and experience Full stack development, across Python/FastAPI services and React/TypeScript front ends Continuously improving the team's processes for iterative development, including embedding automated testing and CI quality gates into a fast-moving AI product … objectives and assisting with tailored development plans Our engineering environment includes technologies such as Python (FastAPI), LangChain/LangGraph for multi-agent LLM orchestration, React/TypeScript, PostgreSQL, MongoDB, Redis, Azure (App Service, Container Registry, Blob Storage), Docker, GitHub Actions, and modern CI/CD pipelines. About You: You will ...

design, write, test, and improve software. About the role We are seeking a talented and self‐motivated Frontend Software Engineer with strong skills in React and Node.js and a collaborative mindset. You will work as part of a cross‐functional product development team building modern web applications used by millions … collaboration, knowledge sharing, and participation in recruitment. Requirements Core Engineering Skills: Strong knowledge of HTML, CSS, and JavaScript Experience building modern web applications using React Experience working with Node.js, Express, or related backend services Experience working with RESTful APIs Familiarity with agile development practices such as: Test-Driven Development Pair ...

seeking a front-end engineer to lead the creation of user experiences that simplify B2B automotive workflows. Applicants should excel in TypeScript and React, and be resourceful and customer-focused. This role focuses on building impactful systems to transform the automotive parts procurement process. It offers hands-on collaboration with ...

play a key role in building MCP integrations, agent-to-agent connectivity and robust API services, while also developing responsive, accessible interfaces in React and TypeScript. What you'll be doing Own the application and integration layer of AI products end to end, covering APIs, integrations, service boundaries and frontend … APIs using REST and/or GraphQL, including authentication, authorisation, versioning and streaming interfaces such as SSE or WebSockets. Build production frontend applications using React, TypeScript and JavaScript. Work closely with UX and product teams to turn designs into accessible, responsive and intuitive interfaces. Develop AI-specific user experiences including ...

solve across a dual-stack C# and TypeScript backend, being intentional about choosing the right tool for the job. Implement microfrontend web applications in React and TypeScript, with an eye for component design and the UX implications of what you build. Take end-to-end ownership of features from early … Technology Stack We believe in using the right tool for the job. Our current stack includes: Backend: TypeScript, Node.js, C#, .NET Frontend: TypeScript, React Cloud & Infrastructure: AWS (ECS, Lambda, SQS, DocumentDB, DynamoDB), Terraform, SST (Infrastructure as Code) Architecture: Microservices, Microfrontends, Event-driven architecture What You Need to Be Successful ...

Infrastructure as Code, CI/CD Use of Middleware and RESTful or GraphQL APIs Microservices and MACH Architectures. HTML, CSS, Javascript frameworks such as React, or Mobile technologies such as SwiftUI, Kotlin, Flutter or React‐native CMS, DXPs and common MarTech SaaS products integration Atlassian, Azure DevOps, GitLab or similar ...

SharePoint Online Designing scalable, secure, and high-performing SharePoint solutions Optimising platform cost, performance, and usability Designing and developing solutions using SPFx, React, TypeScript, JavaScript, Microsoft Graph APIs, and REST APIs Designing and maintaining enterprise on-premises and cloud SharePoint platforms Administering SharePoint SE (on-prem) and SharePoint Online tenants … experience administering and developing solutions for SharePoint Subscription Edition (SE) and SharePoint Online. Proven expertise in SharePoint Framework (SPFx) development Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph Solid experience with C# and .NET ...

doing: Develop and integrate APIs to support modern application experiences Build and automate workflows using Azure Logic Apps Create clean front-end features using React, Angular or Vue.js Deliver back-end services using .NET, Node.js, or Python Work with JSON and JavaScript to build and consume data-driven interfaces Script … bring: Proven experience in API development and building integration layers Strong Azure capability, including Azure Logic Apps Front-end development experience with React/Angular/Vue.js Back-end development experience with .NET, Node.js or Python Working knowledge of C# and JavaScript, with confidence using JSON Ability to develop with ...

implement advanced AI architectures such as Retrieval-Augmented Generation (RAG) and Reinforcement Learning with Human Feedback (RLHF); lead the development of applications using React, .NET, Python, or Node.js, ensuring scalable, maintainable, and performant solutions. Team Management: Manage and mentor engineering managers, leads, and developers, fostering a culture of excellence … Technical Expertise: Extensive experience in .NET (C#), Python (Django, Flask), or Node.js (Express.js), with hands-on experience building backend systems and APIs; experience on React for front-end development. Cloud & Architecture: Deep knowledge of cloud technologies (AWS, Azure) and experience deploying cloud-native applications and microservices architectures. AI Integration: Strong ...

Senior Engineer - LMEsmart Shift Pattern: Standard 40 Hour Week (United Kingdom) Scheduled Weekly Hours: 40 Corporate Grade: D - Assistant Vice President Reporting Line: (UK Division) Information Technology Location: UK-London Worker Type: Permanent Overall Purpose ...

Senior Full Stack Software Developer at MyPocketSkill 📍 London 📅 Fulltime (could be P/T initially) 💵Package: £130,000+ Senior Full Stack Developer Join us as Senior Full Stack Developer in an AI-powered Fintech/ ...

technical requirements, make trade-offs and ensure that solutions are both sustainable and maintainable in the long term. Experience with mobile app development, particularly React Native, is a strong plus and a passion for promoting wellbeing and reducing stress through technology is essential. This role requires wearing many hats, collaborating … highly experienced Software Engineer with around 5 years + software engineering expertise, having developed consumer facing apps Full stack experience - strong with frontend technologies (React experience essential) and proficient across infrastructure and backend (ideally Python, or TypeScript/JavaScript) Strong collaboration skills across Product Discovery and Product Delivery phases Capable ...

audiences. Experience working in multi-supplier or partner environments. Desirable: Deep technical expertise in one or more of: cross-platform mobile app development (ideally React Native with Expo); web development (React.js, Node.js, HTML, CSS/Sass); Java API integrations; Data Engineering; Salesforce. Knowledge of CMS platforms such as Adobe Experience ...