Top Front End Developer Jobs in London

Design, develop, test, and maintain scalable full-stack applications using Node.js, Express, Angular, and TypeScript. Build secure REST APIs, responsive front-end applications, automated tests, and CI/CD pipelines. Support AWS cloud-native deployments and container technologies while contributing to architecture discussions, code reviews, troubleshooting, and performance optimization. Collaborate with product, design, QA, and DevOps teams in Agile delivery environments.

Build modern frontend applications for an AI-driven insurance platform. Responsibilities include creating multi-step quote forms with validation, quote results and comparison pages, and fast, SEO-friendly marketing pages. The role requires strong React experience, ideally with Next.js, accessibility awareness, and experience delivering serious products. Nice-to-haves include e-commerce or marketplace experience, design systems, regulated industries, and web analytics.

Build and maintain high-performance frontend features in a shared TypeScript/React/Next.js monorepo. Design and implement UI components (MUI), ensure low-latency real-time interfaces, write tests (Jest, Cypress/Playwright), and handle maintenance, performance, and production issues. Collaborate with design and domain experts and occasionally work on backend or infrastructure changes to ship end-to-end features.

Develop, maintain, and test software for Motorola's systems, with a focus on frontend technologies and state management. Collaborate with teams and implement best practices.

Lead frontend or full‑stack development for ONDA's web and mobile apps. Own architecture and delivery, iterate features via A/B testing, collaborate with product and leadership, debug across the stack, and help build the engineering team and roadmap.

The Sr. Software Engineer (FE) will lead the development of scalable frontend applications using React. Responsibilities include systems design, testing strategy, performance optimization, AI integration, and mentoring.

The Senior Software Engineer will develop features for Phantom's web platforms, lead new product initiatives, interface with users, and contribute to team culture.

Build and own marketing-focused web projects, including landing pages, campaign pages, and website updates. Ship production-quality front-end code, improve technical SEO, and ensure performance, accessibility, UX, and UI quality. Partner with Marketing, designers, developers, and external agencies to scope, coordinate, and deliver projects. Work primarily with Angular 13 while adopting modern frameworks and AI-assisted coding practices.

Develop new user-facing features, collaborate with designers, manage complex state in frontend applications, and maintain component libraries.

Full-Stack Engineer responsible for developing and maintaining front-end and back-end components, collaborating on product solutions, and improving user interfaces.

Build and ship compliant, well-tested frontend software for patient and clinician workflows. Own end-to-end delivery, improve reliability, drive frontend performance and accessibility, collaborate with product/design/clinical teams, and apply GraphQL and modern tooling to deliver clinical-grade UIs.

Develop and test front-end components using Microsoft .NET stack (C#) and Visual Studio. Work with MS SQL Server, MFS library, Azure services and rule-engine pub/sub patterns. Handle configuration management, collaborate with stakeholders, and maintain certification in relevant technologies.

The Senior Front-End Engineer will modernize and build front-end projects at Pitchup, utilizing Nuxt.js and Vue.js, while enhancing UI/UX and improving development practices.

Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.

As a Senior Frontend Engineer, you'll deliver web-based AI modeling tools, optimize frontend architecture, and collaborate on complex UI components.

The Senior Frontend Engineer will maintain and improve the JavaScript SDK, design user-friendly APIs, ensure security and performance, collaborate with backend teams, and support developer documentation.

As a Senior Frontend Engineer, you'll design and deliver React/TypeScript components, optimize performance, and lead frontend architecture for complex web apps.

As a Senior Frontend Engineer, you'll create production-ready web components using React and TypeScript, optimize performance, and collaborate with teams to deliver complex UIs for AI applications.

As a Senior Frontend Engineer, you'll lead the development of web apps using React and TypeScript, creating intuitive, data-driven UIs, while implementing best practices and performance optimization.

As a Front End Engineer, you will develop impactful features, improve platform functionality, and collaborate with product and design teams, emphasizing JavaScript and Python.

Build and enhance customer-facing and internal web applications using Next.js, React and TypeScript. Collaborate with Product, Design and Backend teams to deliver accessible, high-performance experiences. Contribute to shared components, platform tooling and improve performance, observability, testing, CI/CD and developer experience. Participate in design, code reviews and own feature delivery across the full software lifecycle.

The Software Engineer will develop, maintain, and test software for Avigilon's VMS, focusing on state management patterns, API integrations, and collaborating with teams on solutions.

Design and develop engaging frontend features for an AI wealth management platform, collaborating with designers and backend engineers, while ensuring high standards in code quality and performance.

The Senior Frontend Engineer will lead the development of the Incard marketing website, focusing on UI quality, performance, SEO, and integrating marketing strategies.

Senior full-stack engineer building high-performance trading systems in TypeScript and Rust. Develop real-time, data-dense React UIs with reactive state management, design distributed systems (REST, WebSockets, TCP/UDP), own end-to-end lifecycle, ensure observability and reliability, mentor peers, and support production incidents.