51 to 75 of 84 React Jobs in the City of London

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 ...

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 ...

ethical AI and privacy (GDPR compliance) make it a user‐friendly yet enterprise‐grade solution. About the Role We are seeking a skilled React.js Developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts … also be responsible for profiling and improving front-end performance and documenting our front-end codebase. Key Responsibilities Develop new user-facing features using React.js Build reusable components and front-end libraries for future use Translate designs and wireframes into high-quality code Optimize components for maximum performance across ...

Senior Full Stack Lead Engineer ReactJS, TypeScript, JavaScript, C#/.NET Banking London This is a new and exclusive opportunity for a Senior Full Stack Lead Engineer/software developer with expertise across ReactJS, TypeScript, JavaScript, C#/.NET to join this investment Banking client as they expand their full … stack software developer team in London city. Role details Title: Senior Full Stack Lead Engineer Technical stack: ReactJS, TypeScript, JavaScript, C#/.NET Employer: investment Banking Location: London City and home working hybrid 50/50% Permanent role, salary £90,000- £130,000 plus bonus This is a new opportunity ...

across SharePoint SE and SharePoint Online. * Lead modernization initiatives moving classic SharePoint experiences to modern SharePoint. * Design and develop enterprise-scale solutions using SPFx, React, TypeScript, JavaScript, Microsoft Graph APIs, and REST APIs. * Design and maintain enterprise on-premise and cloud SharePoint platforms, including site architecture, navigation, branding, and content … 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 ...

majority of your time in code and in the AWS console: building contact flows and AI agents, writing Lambda functions and CDK stacks, developing React-based agent and admin tooling, and debugging production issues on systems that serve tens of thousands of agents and millions of customer interactions. You work … plus LLM-based development (Amazon Bedrock, Q in Connect, or equivalent), including prompt engineering and tool calling Strong TypeScript/Node.js and Python; production React experience; solid AWS serverless engineering (Lambda, EventBridge, API Gateway, DynamoDB, Step Functions, Kinesis) Infrastructure as code proficiency with AWS CDK or Terraform, including multi-account ...

work in a mixed team of engineers from several suppliers, alongside a dedicated AI engineering capability. The platform combines Python/FastAPI services, React and TypeScript interfaces, Camunda workflow orchestration, modular services, data persistence, and integration with existing Defence tasking processes. Despite the AI-enabled focus of the platform, this … Defence Intelligence, National Security or comparable secure environments Proven experience leading agile development teams Strong engineering background across Python, FastAPI, REST APIs, React and TypeScript Experience designing and delivering microservice architectures #J-18808-Ljbffr ...

Lead Software Engineer Location: London, E14 5RE/Canary Wharf – Hybrid Job Type: Full-Time Skills: Lead Software Engineer, Laravel, React, Python, AWS, AI/ML, n8n, Claude Code, Cursor, Docker, Startups, DevOps We’re looking for a Lead Software Engineer with a path to CTO to join our founding … team in Canary Wharf. You’ll lead technical direction across our platform, mentor a growing engineering team and build AI-powered products using Laravel, React, Python and AWS. Connectivity matters. We’re BroadbandUK. We help millions of people each year make better broadband decisions because fast, reliable internet improves everyday ...

lean on, without carrying the management load. What you'll be responsible for: Building and shipping features across our learner and content platforms (React, Node.js, NestJS), taking work from spec through to production. Using AI tools such as Cursor and Claude to accelerate your work, while owning the validation … Full-stack Engineer, with at least some of that time at a senior level. Strong TypeScript across our stack - a pnpm and Turborepo monorepo, React 19 with TanStack Start, Router and Query, Tailwind CSS, Prisma and PostgreSQL (Supabase), Better-Auth and Stripe, deployed to Google Cloud Run via GitHub Actions ...

experienced full stack developer (React Node) looking to work on our cutting-edge frontends for a healthcare mission driven organization? Are you a collaborative Sr Software Engineer with an automation mindset — someone who looks for ways to build tools, agents, or AI-assisted workflows to multiply your own and your … physicians, nurses, medical students, and other roles daily to improve patient care and research. Requirements Possess current frontend and backend skills in both React and Node. Only candidates with this skill set will be considered for this role. Experience working on moderate to large web monoliths Have taken an application ...

contribute to development across our web and mobile applications. You’ll build your skills across a Scala + Play Framework backend and a React + AG-Grid front-end, while using gRPC to communicate with our core product’s backend systems. Working with guidance from senior engineers, you’ll help … product stakeholders to understand requirements, clarify details, and deliver practical solutions. Tech Stack Backend: Scala, Play Framework, REST/JSON and gRPC Frontend: React, TypeScript, AG-Grid Mobile: Current app in CodenameOne, target migration to React Native (or similar JS-based cross-platform framework) Tooling: Jenkins, GitLab, SonarQube, IntelliJ IDEA ...

Staff Software Engineer (User Experiences) - Robotics & Life Sciences | Complex Product Engineering London hybrid, 3 days per week £130,000 to £160,000 React, TypeScript, Node/Python/Go, AI-enabled interfaces Staff Software Engineer (User Experiences) - We're working with a technology company building the software platform that enables … hardest product problems around how complex scientific workflows are presented and interacted with by users. This is a Full Stack, with a focus on React and TypeScript, building intuitive experiences on top of technically complex systems. You'll take ownership from user problem through to production, working closely with Product ...

Front End Engineer/Developer (React Senior/Lead) London/WFH to £90k Would you like to join a scale-up technology company in an influential role where you can take ownership and see the business impact of what you do? You could be progressing your career … maximises revenue for vendors. As the lead Front End Engineer you will lead the architecture and development of front end applications, primarily using React, ensuring performance, maintainability and scalability across web products, remaining hands-on with the code. You'll collaborate closely with product and design teams to translate requirements ...

Clearance: Active DV Clearance You will play a huge part in influencing the engineering standards and technical delivery of a modern platform using Python, React, TypeScript, Kubernetes, and cloud-native technologies. Essential Skills & Experience Experience working within Defence or National Security programmes Previous experience leading software development teams. Strong development … expertise in: Python React TypeScript FastAPI REST APIs React TypeScript Strong understanding of PostgreSQL & MongoDB Docker & Kubernetes Previous experience working within MOD deployment environments. - Active DV Security Clearance. ...

billion. For more information on how we process your personal data, please refer to HCLTech’ s Candidate Data Privacy Notice. Job Description: UI Developer (React, TypeScript and AI) Role Overview- We are seeking a highly skilled UI Developer with strong expertise in building time-critical, high-availability, and high-performance … across the full UI development lifecycle, including design, development, testing, and deployment. Technical Skills & Expertise- Frontend Technologies: Expert-level proficiency in HTML, CSS, JavaScript, React, and TypeScript Real-Time Communication: Strong understanding of WebSockets, Server-Sent Events (SSE), and REST APIs State Management & Programming: Solid experience with state management libraries ...

critical product surfaces across our web and mobile applications. You’ll work end-to-end across a Scala + Play Framework backend, and a React + AG-Grid front-end, using gRPC for communication with our core product’s backend systems. You will lead the technical direction as we build … well as continuing the evolution of our Mobile app. Responsibilities Design & Build: Deliver robust, maintainable features across the stack (Scala/Play backend, React/AG-Grid frontend) Mobile Migration: Define the path from Codename One to a JS-compatible framework (likely React Native), including architecture, incremental migration strategy ...

html Integration of Fragments ...these fragments share overlapping content related to the required experience in languages and frameworks including JavaScript, React, TypeScript, Python, and GoLang. This overlap allows us to piece them together in the correct order. After combining the overlapping parts, we get: "Be a part of London … opportunity... In terms of the tech itself, the team is looking for an engineer who has experience in the following languages and frameworks: JavaScript, React, TypeScript, Python, and GoLang. In addition, they'll also be looking for those with hands-on use in Neo4j, GraphQL, AWS, and Kubernetes. Demonstrating..." ``` #J ...

SaaS Platform | Tripled ARR in 12 months Remote-first (UK) with hybrid London office option Up to £150,000 + equity Typescript/Node, React, GCP/AWS Staff Product Engineer - We're working with a rapidly scaling AI-native SaaS company who raised an impressive Series B round … problems while shaping the product experience for thousands of users. What will the Staff Product Engineer do? Contribute across the stack (Node.js/Typescript, React, GCP), designing scalable architectures to support rapid product growth. Lead end-to-end feature development, from concept through to release. Champion engineering best practices ...

Front End Developer - React, RxJS, Typescript, Websockets, EDA Working with a global financial services organisation who are looking for a Front-End Developer with expertise in React, RxJS, Typescript, Websockets and Event Driven Development (EDA) t o join a small, collaborative team responsible for building a modern trading application … Rate - £700-£800/day Inside IR35 via Umbrella Skills and Experience Required Frontend: Proven experience as a Front-End Developer with expertise in React, RxJS, Typescript, Websockets and Event Driven Development (EDA) Real-Time: Experience with Real-time Data. Stakeholder Management: Interface with project stakeholders to gather requirements ...

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 … solving challenging technical problems while shaping the product experience for thousands of users. What will the Senior Product Engineer do? Contribute across the stack (React/Typescript, Node, GCP), with a strong focus on frontend systems Design scalable frontend architectures to support rapid product growth Lead end-to-end feature ...

high-performance user interfaces. You will work across the full UI development lifecycle, from design through testing and deployment, using HTML, CSS, JavaScript, React and TypeScript. Strong experience with real-time communication (WebSockets, SSE) and REST APIs, plus state management (Redux) and SPA architectures, is essential. #J-18808-Ljbffr ...