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

team. You’ll have 4+ years building and shipping production web applications as a full stack engineer who owns features end to end. Strong React and TypeScript. You can architect and refactor nontrivial frontends, not just hand‐roll components. Strong Postgres or equivalent. Comfortable designing schemas, writing performant queries, managing ...

maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full‐Stack Development: Develop responsive and performant front‐end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external APIs such as AWS, Stripe, Zendesk, Twilio, Google Analytics, Google … field from a Tier 1 university. Experience: Minimum of 4 years of full‐time professional experience in software development, with strong expertise in TypeScript, ReactJS, and Next.JS. Solid experience in building RESTful APIs Leadership: Proven track record of leading development teams and managing large‐scale projects. Database Expertise: In‐depth ...

mentor a growing engineering team in Canary Wharf. You will shape architecture, balance scalability with speed, and build AI-powered products using Laravel, React, Python and AWS. You’ll work on retrieval and agentic AI systems, leverage datasets from Ofcom and Openreach, and help transition BroadbandUK into an AI-first ...

Protocol, Agent‐to‐Agent and LLM selection (advantage). Software development experience, including proficiency in one or more of the following: Python, JavaScript, JSON, React and related scripting, .NET technologies (C#, ASP.NET), REST services, and PowerShell. Desirable: experience with Power Pages. EU Characteristics that can spell success for this role ...

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 ...

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 ...

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/ ...

Online Filings is seeking a Senior Software Engineer to architect and develop our next-generation web application and API. This role requires technical leadership, hands‐on development, and mentoring of junior developers to ensure scalability ...

transformation consultancy setting with public and private sector clients. Hybrid work, training, and a competitive package are offered. You will work with Python, TypeScript, React, Django, and cloud platforms to deliver scalable AI products, while collaborating across business units and contributing to #J-18808-Ljbffr ...

lead cloud, data, integration and security architecture across IT projects, ensuring designs meet internal standards and reference architectures. Key requirements include hands-on Azure, ReactJS, NodeJS, microservices, Kubernetes and GraphQL expertise, plus experience with data platforms and data architecture. #J-18808-Ljbffr ...

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 ...

Interact with stakeholders on architecture issues and strategic improvements where such expertise is required. Skills & Requirements Hands on expert experience with Cloud especially Azure, ReactJS, NodeJS,microservices, micro-frontend, Kubernetes and GraphQL is a must. Experience in data architecture and data platforms #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 ...

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 ...

Agentic AI frameworks in client-facing environments, including data engineering in cloud environments. Strong Python (3.10+), TypeScript, JavaScript (ES6+), SQL and Bash. Front-end: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress plus AI product UX patterns such as streaming, review loops, provenance/… Stack Developer, Python Developer, Senior Consultant Data Science, Data Scientist, Solutions Architect AI, LLM Engineer, MLOps Engineer, AI Software Engineer, Django Developer, FastAPI Developer, React Developer, Next.js Developer, TypeScript Developer, Azure OpenAI, Vertex AI, LangChain, LangGraph, CrewAI, Autogen, OpenAI Agents SDK, Google ADK, RAG, retrieval augmented generation, MCP, LangSmith, TruLens ...

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 ...

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 ...

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 ...

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 ...