Top Front End Developer Jobs in London

Build and own production React screens for a browser-based transportation dispatch platform. Responsibilities include integrating OData and CloudHub services, managing Redux state, creating data-heavy accessible interfaces, implementing maps and drag-and-drop workflows, writing Playwright and axe-core tests, optimizing performance, and shipping tested functionality weekly. The role also involves backend service enhancements, CI/CD practices, pair-squad collaboration, and AI-assisted development.

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.

Shape frontend architecture and engineering direction across React and React Native product teams. Own shared libraries, platform capabilities, design-system foundations, developer tooling, performance, testing, state and data-flow strategy, and migration decisions. Diagnose systemic web and mobile issues, remain hands-on with implementation and investigations, partner across product, backend, and QA, and mentor senior engineers. Improve developer effectiveness, reliability, and product quality through durable technical mechanisms.

Design and implement browser-based trading tools with polished, sophisticated UIs. Build reusable UI libraries and abstractions, collaborate across the stack, and work closely with traders to capture user needs. Emphasizes typed functional programming and high UX standards.

Build and maintain scalable, high-performance React/TypeScript UIs, implement AI-driven features, develop advanced data visualizations, collaborate on API design, and maintain the internal design system while optimizing performance and real-time data handling.

Design, build, and operate reliable, scalable platform infrastructure. Manage cloud resources, IaC (Terraform, Helm, Go CRDs), Kubernetes and serverless deployments, monitoring/alerting (Datadog), CI/CD pipelines, incident response, SLIs/SLOs, and collaborate with product and platform teams to reduce toil and improve developer workflows.

Develop and maintain user-friendly, robust front-end applications in an agile environment. Responsibilities include UI development, cross-browser compatibility, secure web development, JavaScript framework development, jQuery, WebSocket-based applications, React Native mobile development, automated testing, and Git-based source control.

The Front-End Engineer will build UIs for the institutional team, develop data visualizations, and collaborate with traders to create optimized tools, focusing on reliability and performance.

Design, implement and deploy end-to-end, API-heavy serverless services on AWS. Build scalable, high-throughput systems, improve performance, mentor junior engineers, and lead technical hiring and architecture decisions.

Own and evolve the frontend web platform, design and run growth experiments to improve retention, engagement, and conversions, collaborate with product and marketing, and mentor teammates to define frontend best practices.

The Frontend Engineer will build user-friendly interfaces for complex financial workflows, develop responsive applications, and lead projects using AI technologies while collaborating with a small team.

The Senior Software Engineer will develop complex UIs for multi-modal data visualization, optimizing performance for 3D/4D scenes and collaborating across the stack and team.

Build complex UIs for visualising and annotating multi-modal data, render high-performance 3D/4D scenes, and collaborate within a team.

As a Frontend Software Engineer, you'll lead UI development, review code, and mentor colleagues while enhancing usability and optimizing user experience across products at Helsing.

Build and own frontend-focused, full-stack web applications for B2B retail customers. Responsibilities include creating responsive real-time interfaces, simplifying complex AI capabilities, contributing to APIs and system design, and managing testing, observability, deployment, and post-release investigation. The role requires strong TypeScript and React expertise, real-time communication experience, cloud deployment skills, product judgment, rapid delivery, and experience using AI coding tools.

Design, architect, and develop customer-facing digital and e-commerce products across web, mobile, social, and in-store channels. Work within Agile Scrum delivery teams, using continuous integration and delivery practices to build responsive websites and applications. Influence clients and teams, mentor colleagues, encourage skills development, and foster strong communication and collaboration.

Designs, architects, and develops customer-facing digital and e-commerce products across web, mobile, social, and in-store channels. Works within Agile Scrum delivery teams, applying frontend engineering expertise across HTML, CSS, JavaScript, and modern frameworks such as React and Angular. Builds responsive websites, uses continuous integration and delivery practices, collaborates with clients onsite, and supports technical innovation, communication, and team development.

Implement and maintain responsive, high-performance user interfaces using React.js, Material UI, HTML, CSS and JavaScript. Collaborate with backend teams and product managers to translate complex financial and climate risk requirements into intuitive, accessible UI/UX. Iterate on designs using Figma, prioritize usability, visual consistency and performance, and incorporate feedback to continuously improve the user experience.