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

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.

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.

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.

You will own frontend systems, lead initiatives in UX and performance, uphold standards, and mentor engineers to enhance quality.

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 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.

Lead the frontend of a proprietary AI platform: design and build reusable components, craft interaction patterns and workflows, prototype and deliver polished, high-performance UI experiences, and maintain platform building blocks for customer projects.

Build and ship cross-platform front-end features for Box AI chat and agentic experiences using React and React Native. Integrate with backend APIs, contribute to CI/CD and deployment, run experiments (A/B tests/feature flags), and uphold accessibility, performance, and quality standards. Participate in on-call rotation and collaborate across teams to translate AI model capabilities into customer value.

Build and iterate the frontend for Postman Insights (0-to-1 product). Rapidly prototype, design, and deliver UX improvements, collaborate with Product and Design, and contribute to frontend architecture and performance ahead of beta.

As a Frontend Engineer, you'll build scalable interfaces, collaborate with the team, and influence the product's technical direction.

Build and maintain responsive, high-performance web applications using React. Collaborate with designers and backend engineers to implement features, integrate REST/GraphQL APIs, optimize UI performance, and write clean, maintainable code using JavaScript/TypeScript and modern CSS frameworks.

Build and own major surfaces of a Next.js consumer healthcare web app, focusing on React/TypeScript development, UI polish, performance, accessibility, data fetching, testing, and end-to-end debugging with a Rails/Postgres backend.

Build, maintain, and optimize scalable front-end systems and web experiences. Translate Figma designs into reusable components, support large-scale site migrations, improve performance, accessibility, and SEO, and work with cross-functional teams using modern workflows and AI-assisted tools.

As a Founding Frontend Engineer, you'll develop user-friendly blockchain solutions, work collaboratively with customers, and iterate on product features. This role emphasizes a mix of technical and customer interaction skills.

As a Frontend Engineer at Clarify, you will build AI-powered interfaces, define API contracts, manage state and performance, and mentor team members while setting architectural standards.

The Senior / Staff Frontend Engineer will design and implement high-quality UI components for a web application, focusing on data visualization and collaboration with design and backend teams. Responsibilities include mentoring, shaping frontend strategy, and maintaining best development practices.

Lead frontend-leaning full-stack implementation work for carrier and enterprise integrations: architect reusable UI and API layers, author RFCs, guide technical delivery, enforce testing and security best practices, and partner with cross-functional teams to scope and ship production integrations.

Lead design and implementation of AI-assisted underwriting front-end UX, own cross-platform frontend and design system, establish frontend patterns and standards, mentor and recruit engineers, rapidly ship and iterate features, and collaborate with design, product, and backend teams to create explainable, auditable human-in-the-loop workflows.

As a Senior Software Engineer, you will lead frontend initiatives using React and React Native, collaborating with product and design to deliver user experiences, while mentoring teammates and shaping frontend architecture.

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 React UI components, implement responsive designs, fix bugs, improve features, and participate in code reviews and team standups in a small remote, product-focused team.

As a Frontend Engineer, you will design and develop the Flint product, focusing on building advanced landing pages and design systems, while collaborating closely with the founding team and users to guide product development.

As a Frontend Engineer, you will develop complex, interactive systems using Next.js, TypeScript, and Tailwind, while converting Figma designs into production code.