Top Front End Developer Jobs in London

Build and scale reliable, API-driven global payment systems integrating banks and payment gateways. Translate product and design requirements into maintainable, tested components; improve performance, accessibility, and usability; contribute to shared libraries and code reviews; and support feature operational health. Collaborate with product, business, operations, design, and backend teams while driving technical decisions, architectural improvements, and engineering practices for large-scale financial infrastructure.

Lead the design and delivery of complex front-end features and shared foundations for Clear Street Studio. Establish architecture, testing, tooling, and code-quality standards; mentor engineers; partner with product, design, and backend teams; and ensure reliability, observability, scalability, performance, and high service-level availability across the platform.

Build and lead frontend experiences for Perk Events, a group travel and events platform. Shape product direction, write architectural designs, manage technical debt, collaborate across squads, mentor engineers, and raise engineering quality. The role involves influencing product strategy, driving technical alignment, and delivering scalable experiences for event planners, suppliers, support teams, and participants.

Build and maintain customer-facing single-page web applications using React. Deliver end-to-end features, fix defects, write tests, participate in code reviews, produce documentation, and collaborate with cross-functional teams while considering accessibility, security, observability, and performance.

The Senior Front End Software Engineer will architect and develop user interfaces for data-intensive applications, mentor peers, and engage directly with users to improve product features.

Designs, develops, tests, and maintains scalable, secure front-end applications using React and TypeScript. Uses AI-assisted development tools responsibly, produces architecture artifacts, improves code quality, debugs complex issues, and creates visualizations from large datasets to drive system improvements.

Lead frontend engineer responsible for designing and delivering cloud-native, mobile-first solutions. Collaborate with cross-functional teams, write clean/testable code, troubleshoot, mentor junior developers, adopt AI-assisted development practices, and drive continuous improvement of development processes and automation.

Develop, test, deploy, maintain, and optimize complex frontend software within a feature team. Collaborate with engineers, architects, and business analysts across the platform while contributing to the full software lifecycle. Build scalable solutions using JavaScript, React, Webpack Module Federation, Jest, and Cypress, and apply DevOps, Agile, automation, performance, and software engineering best practices.

Lead design and implementation of large-scale graph UI features, collaborate with design, backend, and stakeholders, optimize Keylines visuals, mentor junior engineers, ensure integration with backend services, and drive projects through the SDLC for a next-gen cybersecurity UI.

Lead front-end development for a greenfield electronic FX options trading platform. Build high-performance React and TypeScript interfaces for RFQ workflows, real-time pricing, volatility surfaces, market data, and structured product pricing. Collaborate with developers, quants, and traders; improve CI/CD, testing, resiliency, performance, and telemetry; and mentor other developers.

The Senior Front End Developer will lead frontend technical direction, drive feature delivery using Next.js and TypeScript, mentor engineers, and collaborate across teams to enhance UI products.

Design and develop secure, customer-facing web applications using Angular and AWS Amplify. Build responsive interfaces, integrate APIs and cloud services, support customer data remediation initiatives, and participate in testing, deployment, code reviews, and technical design. Collaborate with technical and business stakeholders while ensuring compliant handling of personally identifiable information in regulated financial services environments.

Own front-end delivery for an operational planning platform used in live defense deployments. Build performant interfaces for interactive maps, geospatial data, large datasets, and time-sensitive workflows. Collaborate with product and design to define solutions, improve usability, review engineering work, make pragmatic delivery trade-offs, and develop reusable design patterns. Strong production React and TypeScript experience, product judgment, resilience, and comfort with ambiguity are required.

Develop and maintain React web applications for trade execution, portfolio management, and risk analysis. Build features with strong test coverage, collaborate across the technology stack, conduct code reviews, improve UI and UX, and contribute to architecture decisions. Work with real-time data, WebSockets, monorepo tooling, state management, monitoring, and AI-assisted development workflows. The role also involves REST and OpenAPI integration, automated testing, and performance improvements for data-intensive interfaces.

Develop and maintain front-end functionality for UKTV’s connected TV and video-on-demand platforms. Build features, fix bugs, implement accessibility, integrate third-party services, collaborate with platform partners, conduct code reviews, and contribute to agile planning and delivery. Serve as an in-house connected TV expert while maintaining code quality, supporting knowledge sharing, and responsibly using AI in development.

Build scalable, maintainable, and well-tested React applications that visualize AI and machine learning insights. Collaborate with data scientists, data engineers, and designers to deliver client-facing products. Lead frontend feature planning, deployment infrastructure, technical standards, reusable component libraries, mentoring, training, and onboarding while serving as the frontend engineering authority for the team.

Own the development of user-facing frontend experiences for real-time AI agent workflows. Drive frontend architecture and technical direction, improve code quality, performance, testing, and maintainability, and collaborate with users, Product, Design, and Engineering. Help simplify complex enterprise workflows while shaping interaction patterns for AI-powered software. The role also involves influencing technical decisions in an early-stage, high-ownership environment.

Build and evolve responsive React frontend applications for customers, partners, and internal users. Design and implement accessible, reliable interfaces and interactive workflows using TypeScript and modern frontend architecture. Contribute to agile product development, testing, CI, performance, maintainability, cross-browser compatibility, and internationalization while collaborating within a cross-functional team.

Build and maintain performant, secure frontend features for repository management using Vue.js and GraphQL. Collaborate across product, design, and backend teams, improve reliability and observability, write tests, participate in on-call and incident response, and apply AI tools responsibly to accelerate development while ensuring quality and safety.

Build core web experiences across Chat, Notes, Calendar, Docs, and Sheets. Develop interactive features such as real-time messaging, collaborative editing, rich-text editing, scheduling, tables, and spreadsheets. Create reusable frontend architecture, integrate streaming AI capabilities, and ensure performance, reliability, responsiveness, and accessibility. Collaborate with product, design, backend, and AI engineering teams while independently owning features from technical design through production.

Design, build, and maintain enterprise-scale Angular front-end applications. Collaborate with UX, product, and backend teams to integrate REST APIs, develop reusable components, optimize performance, implement testing (unit, integration, e2e), and support CI/CD and containerized deployments.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

Own Omnea’s front-end architecture and design system across product teams. Build reusable components, establish interface standards, improve performance and build tooling, and guide adoption. Partner closely with designers and engineers to deliver accessible, polished procurement interfaces. Contribute production TypeScript and React code, participate in customer-focused development, mentor teammates, and make autonomous architectural decisions in a fast-growing organization.

Own the delivery of high-quality frontend software in an autonomous Agile team. Design scalable features using TypeScript, React, Node.js, and related technologies; promote TDD, test automation, clean code, performance, and usability. Collaborate with product and design partners, contribute to planning and prioritization, estimate work, conduct code reviews, mentor engineers, share knowledge, and advocate for continuous technical improvement and responsible use of AI.

Own complex frontend features across web and mobile, design React and React Native systems, improve rendering and runtime performance, and maintain shared libraries and abstractions. Collaborate with product, backend engineering, and QA to deliver simple user experiences. Ensure quality through code review, unit, end-to-end, and visual-regression testing while mentoring colleagues and strengthening frontend engineering practices.