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

Lead the evolution of Seeq’s frontend infrastructure, including React systems, component libraries, state management, styling architecture, and reusable application patterns. Drive large-scale refactors, improve developer experience, ensure accessibility and performance, evaluate open-source tools, and establish technical standards adopted across teams. Collaborate with designers, product teams, and engineers through architecture reviews, documentation, code reviews, mentoring, and cross-team delivery.

Lead frontend engineering for large-scale React web applications. Architect application patterns, structure, libraries, and coding standards; build React applications end to end; conduct code reviews; mentor engineers; promote performance, scalability, and maintainability; and collaborate with designers, product managers, and technical and non-technical stakeholders.

Lead front-end engineering for enterprise transportation applications using React, TypeScript, and Material UI. Responsibilities include front-end architecture, reusable component development, accessibility, responsive design, API integration, SQL troubleshooting, testing, CI/CD, code reviews, mentoring, Agile planning, modernization, and production support. The role independently leads features from requirements through deployment while collaborating with designers, product owners, analysts, engineers, testers, DevSecOps teams, and government stakeholders.

Build the realtime, HIPAA-compliant messaging and collaboration frontend ('Pulse') that makes an AI colleague feel human. Implement complex interactive data visualizations, micro-interactions, and high-performance accessible interfaces. Work embedded with product and design, own UI quality, iterate on AI-driven specs, and deliver production frontend experiences clinicians will trust.

Lead frontend and full‑stack projects across Marimo's open-source ecosystem. Design simple, powerful editor experiences, build performant data visualizations and editor extensions, engage with the community, triage issues, and balance community needs with product roadmap.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

Build and ship customer-facing web features using React, Next.js, and TypeScript. Own frontend quality across performance, accessibility, responsiveness, component consistency, and polished user interactions. Partner closely with design and product, contribute to the marketing site, use AI coding tools to accelerate delivery, and help establish frontend standards and practices as the team grows.

Design, build, deploy, and maintain secure, scalable Java and Spring Boot services for a multi-tenant ecommerce SaaS platform. Develop REST APIs, optimize MySQL databases, operate AWS workloads, and support CI/CD, observability, testing, and production systems. Contribute to architecture and technical decisions, mentor engineers, troubleshoot issues, and participate in on-call support while ensuring PCI DSS compliance and responsible use of AI-assisted development tools.

Develop and maintain iOS, Android, and web development platforms for the myQ connectivity program. Lead technical planning across scrum teams, translate product requirements into software designs, implement complex features, oversee releases, improve development processes, and enforce quality standards. The role mentors engineers, leads offshore teams, collaborates with product, architecture, DevOps, firmware, infrastructure, and QA teams, and contributes to architectural decisions, technical documentation, interviews, and continuous improvement.

Set the technical direction for data visualization, translate strategy into shipped features, and build high-quality frontend visualization components and supporting data pipelines. Partner with product and engineering teams, improve visualization performance, mentor engineers, and iterate rapidly based on customer feedback. The role requires strong TypeScript or JavaScript skills, deep data visualization experience, familiarity with analytics tools, and proficiency with AI coding workflows.

Lead frontend engineering for the DataLab product, developing scalable React and TypeScript interfaces for enterprise financial applications. Guide frontend architecture, component design, accessibility, performance, developer experience, and testing practices. Collaborate with product managers and backend engineers, mentor teammates, make technical decisions, and promote AI-assisted coding tools while maintaining high standards for security, quality, and maintainability.

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 own frontend product experiences for exploring, visualizing, sharing, and embedding data. Design and implement APIs, SDKs, and interfaces consumed by external customers. Partner with product, design, engineering, and customers to scope integrations, ship iteratively, and represent embed customer needs. The role requires strong JavaScript and TypeScript skills, independent delivery of production software, familiarity with data or business intelligence tools, and proficiency with AI coding workflows.

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.

Lead front-end architecture and cross-team technical initiatives for the NodeZero platform. Build scalable React and TypeScript systems, reusable components, developer tooling, and shared frameworks while improving performance, reliability, accessibility, observability, and CI/CD workflows. Mentor engineers, establish engineering standards, guide technical strategy, reduce technical debt, and collaborate with Product, Design, Platform, Security, and engineering teams.

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.

Build and enhance Ramp’s marketing website, brand design system, and reusable component library. Partner with designers, engineers, paid advertising, and growth teams to create interactive experiences, conduct landing-page A/B tests, and drive lead generation. The role requires strong frontend and design engineering skills, responsive design expertise, and close attention to implementation details.

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 performant, accessible front-end interfaces for AI agents, dashboards, conversational user interfaces, and visualization tools. Collaborate with designers, AI engineers, and backend developers to create scalable components, optimize cross-browser experiences, and iterate on UX using testing, feedback, and usage data.

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.

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.

Lead the architecture and delivery of large-scale React and React Native applications across web and mobile. Establish frontend standards for performance, accessibility, reliability, and maintainability; build shared component libraries and design systems; resolve complex frontend and cross-stack issues; partner with product, design, and backend teams; and mentor engineers while shaping technical strategy across multiple product areas.