Top Front End Developer Jobs in Los Angeles, CA

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.

Own and evolve the SemiAnalysis WordPress codebase: build themes, custom Gutenberg blocks, and ACF-driven templates; translate Figma into pixel-perfect responsive UIs; integrate React/Next.js tools; optimize performance and Core Web Vitals; ensure accessibility (WCAG 2.1 AA); maintain integrations with analytics, CRM, and payments; and collaborate with designers, analysts, and distributed teams.

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.

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.

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

The UI Frontend Developer will design and develop responsive web applications, coordinate with backend developers, and create modular components, while ensuring high-quality coding standards.

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.

The Lead Front-End Developer will lead frontend initiatives, ensuring an optimal user experience, architecting solutions, and mentoring developers.

Responsible for developing and maintaining a web-based user interface, collaborating with UI/UX teams and backend developers, and ensuring an optimized application through problem-solving and communication skills.

The HTML Developer will create responsive HTML templates, collaborate with developers, ensure cross-browser compatibility, and debug issues while staying updated on trends.

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.

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

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.

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.

Build sophisticated user interfaces for AI and blockchain interactions, including monitoring tools and decentralized application interfaces, while collaborating across teams for seamless user experience.

The Senior Frontend Engineer will develop and maintain front-end features, collaborate with teams, and enhance user experience while mentoring junior engineers.

Lead the front-end architecture and development of the FanSight platform, owning end-to-end systems and user experience. Build scalable, high-performance consumer-facing and B2B web applications, implement APIs and services, set engineering standards, guide technical direction, mentor engineers, and collaborate with product, design, security, and cross-functional teams to deliver accessible, resilient applications that handle massive traffic.

Lead front-end architecture and development for the FanSight platform, owning end-to-end systems, building scalable consumer and B2B features, mentoring engineers, defining technical roadmaps, ensuring performance, accessibility, testing, and collaborating with cross-functional teams to deliver high-traffic, resilient web applications.

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.

The Staff Front End Engineer will lead technical direction, improve app features, mentor engineers, and collaborate with cross-functional teams using React Native.

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

The Senior Frontend Engineer will develop user-friendly and scalable components for a data labeling platform, collaborating with teams and mentoring junior engineers.

The Frontend Software Engineer will develop and maintain critical applications using TypeScript and React. The role involves engagement in product discovery, coding, and deployment of applications to enhance manufacturing processes.

Front end developers ensure web design and user experience alignment, optimize web pages, and maintain brand consistency, collaborating with various teams.

Develop modern web applications focusing on UI components using React while ensuring performance, accessibility, and cross-browser compatibility.