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.

Build and ship production frontend features for treasury, clearing, custody, and internal operations products. Collaborate with product and design, write tested and maintainable TypeScript, improve frontend architecture and tooling, resolve production issues, and contribute to frontend standards. The role requires hybrid work three days per week in the London office, with React, testing frameworks, CI/CD, and fintech experience preferred.

Build and operate MUBI’s global web platform using React, TypeScript, and Next.js. Develop streaming, discovery, catalogue, player, and editorial features; optimize performance, Core Web Vitals, rendering, caching, and media playback. Own work from technical scoping through deployment and observability, maintain rigorous automated testing and CI/CD, contribute to architecture and code quality, mentor engineers, and collaborate with product, design, CDN, and backend teams. Experiment with AI coding tools to produce measurable engineering gains.

Lead frontend engineering across cross-functional squads, ship accessible and performant product features, own API contracts and technical roadmaps, drive frontend standards and migrations, and establish security, quality, reliability, build, and deployment practices. Develop engineers into technical leaders, influence product strategy, and define standards for AI-assisted frontend development. The role requires deep TypeScript, React, Next.js, CSS, testing, performance, and production-scale web application expertise.

Own frontend product features from ideation through launch and iteration. Build accessible React interfaces, make independent UX and UI decisions, run A/B tests, analyze Mixpanel data, conduct user interviews, and collaborate with designers, product managers, and backend engineers. Maintain robust UI tests and use customer feedback and analytics to improve product adoption and quality.

Develop and maintain Vue 3 + TypeScript web UIs for performance-critical video streaming. Build UI components, work with large data sets and REST APIs, improve performance and scalability, collaborate with product, design, and backend teams, and follow engineering best practices with mentorship and code quality focus.

Lead front-end development for equity derivatives trading applications used for global marking and pricing. Design, build, test, and enhance production-quality React software; integrate APIs and microservices; maintain observability and CI/CD practices; resolve complex technology and business problems; and mentor developers while collaborating with trading, product, and technology teams.

Lead the architecture and development of scalable, secure, accessible frontend and fullstack web applications. Establish UI engineering standards, reusable component libraries, design system adherence, API and backend integrations, testing, performance, CI/CD, and security practices. Collaborate with product, UX, backend, infrastructure, and security teams to deliver complex technology initiatives. Provide technical leadership, mentor engineers, resolve complex system challenges, and ensure compliance with enterprise architecture and risk controls.

Build and maintain front-end features for a data-heavy Ruby on Rails and React application. Responsibilities include developing React components and Stimulus controllers, editing Rails views, implementing responsive and accessible interfaces from designs, fixing bugs, writing JavaScript and webpage tests, and collaborating through code reviews and Git workflows. The role offers mentoring and professional development for a junior developer with front-end experience.

Lead the front-end architecture and delivery of a major SaaS platform rebuild. Own architecture, component systems, performance, scalability, responsiveness, and reusable libraries. Translate designs into high-quality production interfaces, mentor engineers through reviews and pairing, and guide AI-assisted development using Cursor and Claude. Collaborate directly with product, delivery, and stakeholders while maintaining demanding standards for enterprise customers in regulated industries.

Develop and scale the Lightning AI platform’s frontend and UI infrastructure using React and Redux. Build end-to-end features, improve stability and performance, evaluate technical architecture, automate software delivery, reduce technical debt, and mentor engineers. Collaborate with engineering, product, and design teams in a rapidly changing SaaS environment while maintaining high standards for code quality and system design.

Owns the end-to-end design and implementation of dense, complex interfaces for regulatory reviewers. Responsibilities include interaction design, typography, layout, motion, design systems, React development, state and data integration, production delivery, and observing users to improve workflows. The role requires designing for expert users, AI-assisted review and correction, and high-volume regulatory information while maintaining strong product judgment, engineering quality, and speed.

Build polished, accessible web experiences and application UI for Octopus Fleet and Electroverse. Translate Figma concepts, prototypes, and wireframes into production-ready React and Next.js code. Develop and evolve shared component libraries and design systems, refine micro-interactions and motion, and collaborate closely with designers, product managers, and engineers. The role also contributes to marketing pages, consumer touchpoints, accessibility, testing, observability, and A/B testing.

Own the frontend architecture and development of Adapty’s Flow Builder, a complex browser-based editor for creating native-rendered mobile app experiences. Responsibilities include building canvas and layer interfaces, document models, undo/redo, autosave, versioning, concurrent editing, AI editing capabilities, configuration translation across five SDK runtimes, and accurate cross-device rendering. The role partners closely with product, design, and mobile teams while driving features from customer needs through production and measuring outcomes.

Build and improve high-quality web products and reusable design-system components. Own frontend performance, including data loading, caching, server rendering, and streaming. Apply strong product judgment to complex UX problems and collaborate with designers, engineers, and product leaders. Work autonomously across products, establish frontend quality standards, and help elevate team practices through technical leadership and craftsmanship.

Build and maintain scalable, performant, testable user interfaces and product features using React and TypeScript. Lead major frontend components, improve software architecture, and ensure consistent experiences across devices, browsers, and settings. Collaborate with backend, Android, iOS, product, and design teams to deliver consumer-facing products. Own engineering projects, define success metrics, validate decisions, and prioritize privacy and user experience.

Build and optimize ZOE’s customer-facing website using TypeScript, React, and Next.js, with a strong focus on accessibility, performance, responsive design, and design-system development. Collaborate with designers, analysts, and product teams on user experiences and A/B testing. Contribute to backend services using Kotlin or Python, support API development, write maintainable code, and ship production improvements regularly.

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.

Owns front-end architecture, development, performance, accessibility, testing, and continuous improvement across Shopify Plus storefronts. The role translates commercial, creative, and customer insights into scalable experiences, leads engineering standards and component libraries, supports experimentation and CRO, evaluates integrations, and manages delivery from technical discovery through post-launch monitoring. It requires strong Shopify Liquid, HTML, CSS, JavaScript, Git, performance optimization, and cross-functional technical leadership experience.

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.

Own Sesame’s end-to-end product experience across UX, interaction logic, visual consistency, and front-end implementation. Build dense financial interfaces, contribute to the coded design system, establish standards for AI-assisted development, and work directly with investment professionals and advisors. The role combines front-end engineering, product design judgment, user feedback, design-system leadership, and review of others’ work.

Build and maintain scalable Vue.js web applications and enterprise portals for customer and internal users. Integrate frontend systems with REST APIs and Spring Boot services, create analytics and reporting interfaces, optimize application performance, troubleshoot across the stack, participate in code reviews, and collaborate with Product, Engineering, and UX teams on customer-facing applications.