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

Design and develop web applications, mentor teammates, shape architectural decisions, write clean code, conduct testing, and troubleshoot issues.

As a Senior Software Engineer, you will lead frontend development, define architecture, optimize performance, and collaborate across teams to create user-friendly logistics applications.

Lead design and implementation of scalable, performant frontend architectures and reusable UI components for consumer apps. Own core user journeys, optimize performance and accessibility, set frontend standards, mentor engineers, drive architectural decisions, and use AI-first tooling to ship features at scale.

As a Senior Software Engineer, you'll lead projects, enhance product quality, and collaborate on technical strategies while building user-facing features.

Architect and build frontend for a cloud platform, manage technical roadmap, create scalable infrastructure and components, ensure high-quality implementations.

The Senior Software Engineer will lead frontend development, define architecture, own UX for workflows, mentor engineers, and collaborate with design and backend teams.

As a Senior Frontend Engineer, you'll architect and build payment experiences, maintain payment dashboards, and mentor engineers while driving frontend architecture decisions.

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.

Develop and maintain scalable, responsive, high-performing web applications using Angular, JavaScript, and TypeScript. Collaborate with product managers, UX designers, backend engineers, and QA teams to deliver quality digital experiences. Integrate REST APIs, implement reusable component and state-management patterns, troubleshoot issues, optimize performance, and support Agile/Scrum development while using monitoring, testing, and source-control tools.

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.

Build and maintain a polished web portal for a premium banking and travel rewards platform using React. Collaborate with designers and engineers on feature scope and product direction, participate in code and design reviews, write well-architected code, tests, and documentation, establish frontend architecture standards, and mentor team members. The role also involves database and API integrations in a fully remote startup environment.

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.

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.

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

Lead architecture, design, integration, validation, and production of highly integrated multi-radio RF front-end systems for aircraft and ground platforms. Define RF architectures supporting LTE/5G, GNSS, Wi‑Fi, ADS‑B/UAT, Bluetooth, ISM, V2V; perform RF system analysis, coexistence mitigation, antenna-sharing and MIMO strategies; develop lab validation and production test methods; support certifications and supplier/manufacturer integration; mentor engineers and establish RF design standards and roadmaps.

Lead frontend technical direction, mentor engineers, drive impact on company growth, and define scalable web applications using technologies like React and Next.js.

Lead frontend architecture and implementation for new products using React, TypeScript, and Next.js. Collaborate with Product and Design, define patterns and testing strategies, ensure performance, accessibility, and observability, mentor engineers, and drive cross-team initiatives to align frontend systems with backend APIs and platform requirements.

Design, build, and support React/TypeScript applications; set accessibility and design-system standards; make technology decisions balancing security and quality; enhance performance, stability, and security; collaborate across product, design, ML, and infrastructure; mentor engineers and reduce technical debt; work across the stack including APIs and integrations.

Build and ship customer-facing frontend features for healthcare products: design and architect scalable UI, own cross-functional projects end-to-end, collaborate with product and engineering leaders, solve high-impact problems, and improve patient and provider experiences across booking, forms, and payments.

Lead front-end architecture and build high-performance React/TypeScript web applications, integrating with back-end APIs, ensuring type safety, testing, CI/CD, scalability, and UX for AI-driven orchestration workflows.

Build high-performance data visualization interfaces and reusable component libraries for large real-time telemetry datasets. Collaborate on API design with backend teams, optimize web performance, write maintainable code, and participate in technical design discussions.

Own and build clinician-facing mobile and web frontends: improve UX, robustness, and performance. Architect scalable, offline-first interfaces; implement real-time voice/audio and deep device integrations; collaborate with Product Design; establish testing, monitoring, and best practices. Ship production mobile apps and modern web dashboards used in unreliable connectivity environments.

Lead frontend architecture and technical strategy for a collaborative work platform. Build scalable React/TypeScript applications, design systems, real-time collaboration (sync, offline, serialization), optimize performance and observability, mentor engineers, and collaborate with Product, Design, and Backend teams to deliver high-quality, maintainable user experiences.

Develop and maintain web application user interfaces using Vaadin and front-end technologies. Apply UI fundamentals (including Fitts' law), refactor enterprise applications, collaborate with clients, and mentor/train other front-end developers.

As a Senior Frontend Engineer, you'll design user interfaces, collaborate with teams, architect scalable solutions, and drive frontend best practices.