Top Senior Front-End Engineer Jobs in San Francisco, CA

Own the design and delivery of user-facing web features using React and TypeScript. Architect scalable frontend systems, reusable components, state management, API integrations, and performance improvements. Build real-time, streaming, dashboard, and conversational interfaces while partnering with product and backend teams. Use AI coding tools to prototype and ship features rapidly, improve engineering workflows, and contribute strong design judgment. The role is onsite in San Francisco and requires close customer and sales collaboration.

Build and lead customer-facing eCommerce booking features using React, Next.js, and TypeScript. Own checkout, payments, scheduling, and partner booking flows; improve conversion, accessibility, performance, observability, and reliability. Integrate commerce and third-party services, develop automated tests, support frontend architecture, instrument experiments and analytics, and monitor production outcomes. Collaborate across Product, Design, Marketing, and Backend teams while mentoring junior engineers and contributing to shared components and API contracts.

Build responsive Web3 applications, web SDKs, developer tools, reusable frontend components, and internal Customer Success tools. Collaborate with Product, Design, and Engineering to create scalable, accessible user experiences. Contribute to code and design reviews, automated testing, continuous delivery, coding standards, and AI-assisted development practices.

Lead end-to-end development of modern frontend initiatives using React and Electron. Design scalable architecture, improve performance and test coverage, resolve production issues, influence technical decisions, and collaborate with Product, Design, and Backend teams. The role includes mentoring engineers, maintaining code quality, supporting observability and incident response, and building secure, high-quality customer-facing payment and form workflows.

Build, deploy, and own scalable consumer applications and services for a digital lending platform, with a focus on React frontend development. Responsibilities include designing features, automated testing, full software development lifecycle participation, collaboration with cross-functional teams, system scalability and reliability, technical debt reduction, mentoring frontend engineers, and using AI-driven coding agents and agentic workflows.

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.

Build and maintain frontend products, features, and scaling tools across the Brex stack. Collaborate with engineering, sales, support, product, design, and operations teams; design experiments; own user experience, data models, scalability, operability, and metrics; and lead complex cross-functional initiatives while maintaining high engineering standards.

Lead frontend development for Coinbase identity experiences including login, signup, OAuth, account security, and multi-factor authentication. Own projects from design through deployment and monitoring, guide Native versus Webview architecture, author technical designs, resolve systemic technical debt, lead on-call and incident response, and mentor engineers.

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.

Own and deliver major consumer-facing web and mobile features from technical design through experimentation and launch. Drive frontend architecture, performance, accessibility, testing, observability, and design-system standards. Build conversion-critical discovery, seat-selection, and checkout experiences, interpret A/B tests, mentor engineers, and collaborate with product, design, backend, mobile, and platform teams.

Build and improve Kikoff’s flagship credit-building product as a senior frontend engineer. Develop features that increase retention, engagement, and revenue while collaborating closely with product managers, designers, and data scientists. Explore and scope new opportunities, analyze data for business decisions, solve problems beyond your expertise, and deliver measurable customer impact using SolidJS or React.

Build and maintain customer-facing frontend experiences across vehicle configuration, trade-in, financing, leasing, and delivery. Develop accessible, performant, well-tested React and TypeScript applications; integrate APIs and third-party services; optimize Core Web Vitals; contribute to component libraries and design systems; and own features from technical design through production. Collaborate with product, design, and backend teams while participating in reviews and applying AI-assisted development practices.

Build and own end-to-end frontend experiences for Coinbase card products across web and mobile. Ship high-scale consumer features, improve payment flow performance and SLOs, reduce latency and CX contacts, mentor engineers, and collaborate with product, design, and backend teams to deliver reliable, user-focused card functionality.

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.

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 own high-performance, customer-facing frontend applications using React, Redux, and TypeScript. Integrate AI-powered features, establish AI development guardrails, optimize scalability and reliability, and maintain design systems, testing standards, and continuous delivery practices. Collaborate with product, design, and backend teams while mentoring engineers and driving features from concept through production.

Build and scale data-dense frontend interfaces that help compensation teams benchmark roles, price jobs, and make pay decisions. The role owns technical strategy and delivery outcomes, emphasizing performance, accessibility, interaction quality, reusable systems, and thoughtful prioritization. It also involves mentoring engineers, clarifying ambiguous problems, and contributing effectively in a fast-paced environment.

Own frontend domains end to end, including architecture, implementation, testing, production quality, performance, accessibility, and security. Set technical direction, design reusable component systems, establish testing strategies, diagnose complex browser and production issues, and partner with Product, Design, QA, and engineering teams. Mentor engineers, review consequential changes, and use AI-first development practices while maintaining accountability for shipped software.

Build and improve ClickUp’s core product experiences using Angular and React. Responsibilities include architecting reusable frontend code, collaborating with product, design, backend, integrations, and QA teams, improving performance and usability, maintaining unit and integration tests, resolving complex bugs, following state-management patterns, and mentoring teammates in a fast-paced environment.

Founding front-end engineer to design and build Flick's editor UI (canvas, timeline, node graph, playback). Lead architecture, prototype creative workflows, optimize complex UX interactions, establish code quality and performance practices, collaborate with design/product/AI backend, and drive key technical and product decisions.

Lead frontend design and delivery of AI product experiences using React and TypeScript, mentor engineers, set frontend standards, use AI-assisted tooling, and contribute to backend services in Go and product roadmaps.

Lead frontend development for Sift Agents, building high-performance, agentic AI user experiences. Own product area from customer discovery through shipping, design interaction patterns for streaming and long-running agent tasks, render agent findings alongside large telemetry datasets, optimize browser performance (Web Workers, OPFS, WebAssembly), contribute to component library, and collaborate with backend engineers on API design.

Lead the design and implementation of a flagship product, define technology best-practices, and mentor the product team while working with rich datasets from Fortune 500 clients.

The Sr. Software Engineer (Front End) will design and develop front-end solutions using various frameworks, ensure performance optimization, and guide TDD best practices.

The Senior Front End Engineer will utilize expert knowledge of JavaScript and web technologies to develop user interfaces, ensuring quality and performance. They will work with various JavaScript libraries and handle service-based architectures, while focusing on responsive design and mobile web development.