Top Front End Developer Jobs in San Francisco Bay Area, CA

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.

The Staff Frontend Engineer will design the UI for a high-performance datacenter infrastructure platform, optimizing for speed and handling complex datasets. Responsibilities include building applications, collaborating on API design, and establishing frontend architecture.

Own and evolve the design system and horizontal web foundation: shared components, tokens, theming, tooling, and architecture. Improve web performance and accessibility, build developer experience and AI-assisted frontend tooling, partner with product teams to integrate platform capabilities, and create documentation and governance to drive cross-team adoption.

Own end-to-end customer-facing marketplace frontend features—from ideation to launch—working closely with product and design. Prototype and build high-fidelity React/Next.js interfaces, improve discovery, matching, scheduling and booking flows, run A/B tests, elevate visual polish and accessibility, and contribute to the design system and frontend platform to increase product quality and speed.

As a Front-End Software Engineer, you will build AI-powered interfaces, tackle complex design problems, and collaborate across teams to enhance user experiences. Responsibilities include mentoring, implementing responsive UI, and engaging with AI technologies.

As a Frontend Engineer at Elicit, you'll develop impactful features using a modern front-end stack and ensure a high-quality user experience while working collaboratively within a small team.

The Frontend Engineer will build user-facing features using React and TypeScript, develop interfaces, and innovate on AI-native interactions, overseeing features from concept to deployment.

As a Frontend Engineer, you will create intuitive web experiences, contribute to roadmaps, build flexible infrastructures, and implement designs from Figma.

As a Staff Frontend Engineer, you'll architect scalable frontend components, lead technical direction, and enhance developer workflows while integrating AI tools at GlossGenius.

Mochi Health seeks a Senior Front-End Engineer to build and own complex healthcare interfaces, ensuring a seamless user experience and managing client-side architecture. Responsibilities include collaborating with mobile teams, maintaining frontend reliability, and integrating AI into products.

Build scalable, high-performance frontend solutions for growth funnels, landing pages, and marketing campaigns using React and TypeScript. Drive experimentation and A/B testing, collaborate with product, design, marketing and data teams to optimize user journeys, prototype ideas rapidly, and uphold frontend best practices, security, and compliance to improve acquisition and engagement.

Build and maintain user-friendly web interfaces for expense and procurement products using React and TypeScript. Implement micro frontend patterns, integrate with backend services via Apollo/GraphQL, collaborate with designers and PMs on shared UI components and design systems, participate in code reviews, triage bugs, and improve frontend engineering standards and observability.

The Frontend Engineer will build user-facing interfaces for AI software development, utilizing technologies like TypeScript and React, while ensuring code quality and user experience.

Build and integrate reusable React.js UI components from wireframes, optimize front-end performance and responsiveness, ensure cross-browser compatibility, validate inputs, consume REST APIs, write tests, document code, and collaborate with designers and backend engineers to deliver accessible, secure, and scalable front-end applications.

Build and refine web tools for satellite operations (Cockpit), develop and maintain SPAs, integrate with GraphQL backends, collaborate on UI/UX, write unit and integration tests, support internal teams, and participate in satellite operations work. Focus on Vue/TypeScript front-end development and observability tooling.

Design and build user-facing web interfaces from mockups using HTML, CSS, and JavaScript. Implement interactive features, ensure responsive and accessible cross-browser experiences, optimize performance, test and debug code, maintain existing applications, and collaborate with back-end developers for integration.

Build full-stack features and realtime web interfaces for the Autonomous Traffic Control platform. Develop frontend UIs (maps, telemetry) and backend services/APIs, integrate streaming feeds, and ship reliable, operational tools used by controllers, fleet operators, and drivers.

Lead the design and development of user interfaces for AI interactions, collaborating with engineers and researchers to create seamless user experiences.

As a Product Engineer, you'll develop and maintain core software features, drive product direction, collaborate with teams, and integrate AI solutions for legal operations.

Build and enhance Vultron's core frontend platform using Typescript, React, and NextJS. Collaborate with cross-functional teams to apply LLMs to real-world government contracting data, iterate with customers, improve UX, performance, and security, and mentor the early engineering team.

Build high-quality interfaces using React and Next.js, own features end-to-end, collaborate with design, iterate on user feedback, and contribute to engineering culture.

Architect and build the core frontend for a collaborative cloud platform, focusing on flexible infrastructure and technical roadmap features.

Own end-to-end frontend development for core crypto payment flows across web and mobile. Improve latency, availability, and SLOs; build user-facing features (contacts, real-time transaction status); identify and fix performance bottlenecks; partner with product/design/backend; mentor junior engineers to reduce customer friction at scale.

The Frontend Engineer will develop scalable UI components for billing, collaborate with backend engineers, and enhance user experiences across OpenAI's financial platforms.

The Front-End Engineer is responsible for developing and maintaining user-friendly web applications, collaborating with teams, optimizing performance, and writing clean code.