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

Lead and deliver frontend engineering projects: build scalable progressive web apps, maintain the design system, collaborate with designers, researchers, and product teams, ensure UI excellence and high-quality frontend code across products.

Build and iterate on the flagship credit-building product, working cross-functionally with PMs, designers, and data scientists to improve retention, engagement, and revenue. Scope and ship impactful frontend features, adopt or apply SolidJS/React, and use data to inform product decisions.

Join a cross-functional frontend team to design and build client-facing features, improve web platform infrastructure and performance, triage operational issues, mentor engineers, and participate in recruiting within an agile environment.

Lead frontend work to design and build accessible Editor interactions: focus management, keyboard navigation, ARIA roles/states, and screen-reader debugging. Collaborate across teams to embed accessibility into architecture, review designs and PRs, identify systemic gaps, and co-design solutions with assistive-technology users.

Collaborate with UX and Game Design to define web features; write and test front-end code (JavaScript, HTML, CSS); evaluate and select web technologies with platform team; define and uphold web development practices, optimize performance, and ensure security standards.

Build responsive, performant React + TypeScript consumer products for blockchain payments. Develop scalable components, design systems, public SDKs/APIs, and testing frameworks. Collaborate cross-functionally to ship secure, accessible, high-quality Web3 payment experiences and improve frontend performance and developer tooling.

Develop user-friendly interfaces and tools for B2B SaaS applications, focusing on user experience and best practices in frontend development.

As a Frontend Product Engineer, you will build core user-facing product experiences using React JS and ensure seamless API integration, collaborating with product managers and designers.

As a Senior Fullstack Engineer, you will design and build user experiences for a distributed LLM inference platform using React and Tailwind CSS, collaborating across teams, and optimizing performance.

As a Senior Frontend Engineer, you'll lead the development of frontend applications, crafting seamless user experiences and driving project implementation alongside cross-functional teams.

Own and design the dashboard and embeddable React UI library, prototype UI ideas, engage customers for feedback, implement full-stack features (frontend-first with backend support), and optimize frontend performance for a data-intensive developer-facing integration platform.

As a Frontend Platform Engineer, you'll build shared frontend infrastructure, improve developer experience, drive adoption of platform systems, and enhance application performance and reliability.

Develop user interfaces for web applications, collaborate with teams, mentor engineers, and ensure code quality and performance in a fast-paced environment.

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.

Lead architecture and delivery of large-scale React and React Native frontends. Define frontend strategy and best practices, build shared component libraries and design systems, optimize performance and accessibility, collaborate with product/design/backend teams, mentor junior engineers, and resolve complex frontend and cross-stack issues.

Build and architect user-facing products and reusable UI component libraries using React, TypeScript, and Next.js. Design frontend systems, solve complex technical problems, and take on full-stack responsibilities at an early-stage, hybrid Palo Alto team.

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 maintain Exponent's user surface across web, CLI, and VSCode extensions. Own and develop core agents (e.g., Database, Code Review). Implement performant React/Next.js TypeScript frontends, real-time experiences, and terminal/CLI integrations.

Build and maintain high-traffic, responsive SPA web applications using Angular/Vue and TypeScript with ASP.NET Core MVC backend. Ensure performance, accessibility (WCAG), code quality, and mentor junior engineers while collaborating with product and business stakeholders.

Drive front-end development for customer-facing web and mobile experiences. Lead feature delivery from concept to production using React, Next.js, TypeScript, Svelte, and Tailwind. Troubleshoot integrations, write unit and integration tests, produce technical documentation, collaborate with product/design/data, and use AI tooling (preferably Claude) to accelerate design and implementation.

Lead frontend modernization by migrating legacy web apps into a microfrontend ecosystem, ship production-critical React/Next.js code, define reusable platform patterns, and collaborate cross-functionally to ensure performance, developer experience, and long-term maintainability.

You'll develop high-performance, visually appealing React applications, optimizing user interfaces and contributing to architectural best practices.

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

Lead the development of customer-facing dashboard and mobile wallet, mentor a team of developers, and ensure high performance and user experiences across platforms.

As a Frontend Software Engineer, you will build and enhance a real-time collaborative editing application, integrate AI features, and collaborate with designers and backend engineers.