Top Front End Developer Jobs in Los Angeles, CA

Architect and build a high-performance, low-latency trading web platform. Integrate real-time market data and execution workflows, collaborate cross-functionally on large initiatives, and deliver scalable, performant, user-focused frontend applications with strong attention to API design, tooling, and developer experience.

Lead the development of front-end architecture for spacecraft modeling software, drive cross-functional initiatives, mentor engineers, and influence product strategy.

Develop high-quality front end .NET desktop applications, improve GUIs, and collaborate with QA and product managers on technical issues.

Lead frontend architecture and strategy across web and mobile, build high-performance React and React Native applications, develop shared component libraries and design systems, optimize performance and accessibility, mentor engineers, collaborate with product/design/backend teams, and resolve complex cross-stack issues.

As a Frontend Engineer, you'll build user interfaces for Crunchyroll's Service Monetization Platform, optimizing performance and enhancing user experience in a collaborative team environment.

The Sr. Software Engineer, Front End will develop 2D and 3D frontend features, drive architectural direction, mentor junior engineers, and address technical debt under high accountability in a complex simulation environment.

This role involves leading web platform initiatives, mentoring senior engineers, architecting web applications, and implementing technical strategies for improved performance.

Design, develop, and enhance custom SAP Fiori/UI5 applications; configure Fiori Launchpad; integrate OData services; perform UI debugging, performance optimization, code reviews, unit testing, and documentation while collaborating with backend and functional teams.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

The Frontend Engineer will collaborate with design and product teams to create responsive user interfaces, write maintainable code, and optimize performance for a financial platform.

Design, develop, test, deploy, and maintain front-end applications for satellite ground systems using modern web frameworks. Collaborate cross-functionally, implement secure client authentication, integrate with backend services (REST/GraphQL/gRPC), use Agile/Atlassian tools, and support DevSecOps/cloud workflows to deliver production-ready features.

Develop innovative UI and web systems, managing project priorities and deadlines while working within a collaborative team environment.

Design and build a scalable, responsive UI; lead frontend architecture and optimization; apply UI/UX best practices; integrate with backend APIs; ensure high web performance and deploy user-facing features.

Build and maintain responsive, accessible React/NextJS web interfaces and support Chrome extension development (Manifest V3). Integrate with backend APIs or WebSockets, optimize performance, write tests, perform code reviews, monitor and document extension and web app behavior, and collaborate with cross-functional teams.

Design user interfaces and workflows in Figma, implement designs using Vue.js and Next.js, and collaborate with backend engineers on API integration.

Lead front-end technical strategy for Coinbase Advanced trading platform: define and execute a scalable roadmap, deliver a low-latency interface across web and mobile, mentor engineers, anchor complex projects, and ensure high standards for code quality and system design.

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end developers, implement UI/UX designs, write clean maintainable code, and debug front-end issues to ensure high performance across devices and browsers.

Build and scale performant, data-driven React web applications and reusable UI components. Integrate with REST/GraphQL backends, support real-time data and map-based visualizations, optimize rendering for large datasets, collaborate across product, design, and backend teams, and maintain frontend architecture, testing, and documentation for mission-critical systems.

As a Staff Frontend Engineer, you will enhance Airbnb's client tech stack by empowering product teams, optimizing infrastructure, and mentoring engineers.

Build and maintain end-to-end product features across frontend and backend. Design frontend architecture with React, participate in technical design and customer-facing support, document features, collaborate with product, and own projects from spec through launch while ensuring code quality and reliability.

Build and maintain performant web and mobile trading interfaces using React/React Native and TypeScript. Implement trading flows, wallet integration, real-time data visualization, reusable component libraries, and optimize UI performance under high-frequency updates while handling edge cases and collaborating with backend and wallet engineers.

Volunteer Principal Front End Developer to build React/React Native web and mobile features, mentor engineers, implement scalable full‑stack solutions, ensure cross‑browser compatibility and testing, work with Node/MongoDB/AWS, attend weekly standups, and support a fundraising launch. Minimum 4 hours/week commitment.

Develop and maintain Java backend services for enterprise blockchain applications, integrate APIs with React/Vue frontends, design scalable blockchain solutions, troubleshoot complex backend issues, and collaborate with the team to apply best practices and stay current with blockchain trends.

Design, build, and maintain scalable frontend applications using Vue 3 and TypeScript. Own feature delivery from design through production, build reusable components and architecture, improve performance and accessibility, collaborate with backend teams on APIs, write tests, mentor engineers, and help shape frontend tooling, CI/CD, observability, and security practices.

Build responsive, high-performance front-end UI using React and Next.js. Convert designs to accessible, maintainable HTML/CSS/JS, write unit and integration tests, debug cross-browser issues, optimize performance, collaborate with back-end and designers, participate in code reviews, document changes, and help plan project deliverables.