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388 frontend engineer react jobs at 233 companies in Sunnyvale, CA

1mo
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Frontend Developer (React)
San Francisco, California, United States
RemoteFull Time
CareerSwift
CareerSwift: AI-powered recruitment and job search automation platform
Basic React experience, comfortable with HTML/CSS/JavaScript, Git proficiency, English communication skills, able to work independently. Side projects and coursework accepted.
React, HTML, CSS, JavaScript, Git
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3mo
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Frontend Engineer
San Francisco or United States
$100k-$250k/yr OnsiteFull Time
Hercules
Hercules: AI-powered platform for building applications and websites.
5+ YOESenior or staff frontend engineer with strong TypeScript/React, UI/UX focus, monorepo experience.
TypeScript, React, AI SDK, PostgreSQL, Redis, ClickHouse, Tailwind CSS, Infrastructure as Code (CDK, Terraform), Docker, Observability (Otel), Hono, Drizzle ORM, Temporal, AWS, Cloudflare, OpenAI API, Anthropic, Google AI
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1mo
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Senior Frontend Engineer
San Francisco or New York City
$150k-$250k/yr OnsiteFull Time
Halliday
Halliday: Unified crypto payment infrastructure and agentic workflow protocol for blockchain.
2+ YOE2+ years building production frontends with React and TypeScript, strong frontend fundamentals (state management, API integration, responsive design, performance), product mindset, collaboration skills, and willingness to be based in SF Bay Area or NYC.
React, TypeScript, Workflow Protocol, ethers.js, viem, wagmi
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3mo
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Frontend Engineer
Menlo Park, California, United States
$115k-$145k/yr OnsiteFull Time
Ventrilo
Ventrilo: Browser-based AI assistant for workflow and writing productivity.
1+ YOE1+ years software engineering; strong JS/TS and Python; React knowledge; experience with web APIs and CSS; on-site in Menlo Park; passionate about building secure, scalable frontend systems.
TypeScript, JavaScript, Python, Google Cloud, Cloudflare Workers, serverless, React, Tailwind, CSS, DOM
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4w
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Frontend Engineer
San Francisco, California, United States
OnsiteFull Time
Omen AI
Omen AI: Provides real-time fluid analysis to monitor critical infrastructure health.
Proficiency with React and TypeScript, experience building data-heavy/visualization UIs, familiarity with D3/Recharts, real-time data handling (WebSockets/SSE), API integration, CSS/UI fundamentals, and security-conscious frontend practices.
React, TypeScript, D3, Recharts, WebSockets, SSE
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3mo
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Frontend Engineer
San Francisco, California, United States
HybridFull Time
Emergent Labs
Emergent Labs: Platform for building production-ready applications using autonomous AI agents.
4+ YOE4-8 years frontend engineering with React.js and TypeScript; large-scale distributed frontend systems; state management; JS/TS, Web APIs; build tools; UI frameworks; REST/GraphQL; testing/CI/CD.
React, TypeScript, Redux, Zustand, Recoil, React Query, Webpack, Vite, Turborepo, Jest, RTL, Cypress, Next.js
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3w
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Staff Frontend Engineer
San Francisco, California, United States
$190k-$250k/yr HybridFull Time
Lunar
Lunar: Building an AI-native information system for hospitals.
10+ YOE10+ years frontend engineering experience; expertise with TypeScript, JavaScript, React, HTML/CSS, GraphQL; experience building real-time, performant UIs; familiarity with Elixir, Phoenix, Postgres, and AWS preferred.
TypeScript, JavaScript, React, HTML, CSS, GraphQL, Elixir, Erlang, Phoenix, Postgres, AWS
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2mo
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Senior Frontend Engineer
San Carlos or United States
$66-$83/hr RemoteFull Time
Natera
NateraNASDAQ: NTRA: Provides clinical genetic testing and diagnostics services.
5+ YOE5+ years frontend development experience (React ecosystem), strong TypeScript/HTML5/CSS3 skills, CS fundamentals, experience with build tools, testing frameworks, authentication flows, and frontend architecture.
React, TypeScript, HTML5, CSS3, Webpack, Vite, Turborepo, Jest, Cypress, CI/CD, Node.js, GraphQL, REST APIs, D3, Chart.js, Recharts, AWS, Docker, Kubernetes, OAuth, JWT, SSO, Browser APIs
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1mo
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Frontend Engineer, Product
New York City or San Francisco or Seattle
$166k-$250k/yr HybridFull Time
Grow Therapy
Grow Therapy: Platform connecting mental health providers with patients and insurance.
5+ YOE5+ years frontend or UX engineering experience; strong visual design judgment; fluent in JavaScript/TypeScript, Next.js, React, and CSS; knowledge of accessibility (WCAG) and web performance; strong prototyping and collaboration skills.
JavaScript, TypeScript, Next.js, React, CSS, WCAG, Gem
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2w
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Founding Frontend Engineer
San Francisco or New York
OnsiteFull Time
Ciridae
Ciridae: Develops AI-native operating systems for real-economy businesses.
4+ YOE4+ years building production frontend with React and TypeScript, strong UX instincts, ability to translate vague requirements into polished interfaces.
React, TypeScript
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1mo
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Senior Frontend Engineer
San Francisco or Tucson or Dallas
$170k-$230k/yr HybridFull Time
Roger Healthcare
Roger Healthcare: AI clinical documentation platform for home health clinicians.
6+ YOE6+ years frontend experience with deep mobile expertise; production mobile and web app experience; expertise with React/React Native, TypeScript, CI/CD; experience with voice/audio, device integration, offline-first systems, scalable UI architectures.
React, React Native, TypeScript, CI/CD, LLM
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1mo
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Senior Frontend Engineer
San Francisco or New York
$190k-$300k/yr HybridFull Time
Baseten
Baseten: Scalable infrastructure platform for deploying and serving AI models.
5+ YOE5+ years building production web apps; deep expertise in React and TypeScript; strong product intuition, UX empathy, cross-functional collaboration, and experience with modern frontend tooling.
React, TypeScript, Tailwind CSS, Next.js, WebSockets
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1mo
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Frontend Engineer (SF)
San Francisco or Cambridge
HybridFull Time
General Medicine
General Medicine: An online store for upfront-priced medical care and consultations.
3+ YOE3+ years building production React apps, strong TypeScript and Next.js experience, UI polish, frontend performance, accessibility, REST API experience; comfortable with Rails/Postgres, SQL, and cross-functional collaboration.
React, TypeScript, Next.js, Ruby on Rails, Postgres, SQL, RESTful APIs
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3w
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Frontend Engineer, Observability
San Francisco, California, United States
$170k-$190k/yr OnsiteFull Time
Postman
Postman: Platform for building, testing, and managing software APIs.
3+ YOE3+ years frontend experience; strong implementation and product sense; proven delivery with independent projects; experience with modern JavaScript frameworks/libraries such as React and TypeScript; substantial overlap with Pacific Time (US-based).
React, TypeScript, JavaScript
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1mo
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Frontend Engineer (Los Altos)
Los Altos, California, United States
OnsiteFull Time
PhnyX Lab
PhnyX Lab: AI-native operating system for biopharma knowledge work.
4+ YOE4+ years frontend experience with React, TypeScript, Tailwind CSS; experience owning frontend quality, building AI/LLM UX (streaming, citations), strong design-to-code skills, and English proficiency.
React, TypeScript, Tailwind CSS, JavaScript, Claude Code, Cursor, Next.js, Vite, React Query, Zustand, Redux, Storybook, Playwright, Vitest
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3mo
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Frontend Engineer - Mountain View, CA
Mountain View, California, United States
$167k-$230k/yr OnsiteFull Time
Otter
Otter: Software for restaurants to manage and grow online orders.
7+ YOE7+ years frontend software engineering with TypeScript and React; strong API, performance, and state management skills; leadership and mentoring experience.
React, TypeScript, GraphQL, REST, WebSockets, SSE
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3mo
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Senior AI Frontend Engineer
San Francisco or San Francisco County
$175k-$275k/yr OnsiteFull Time
Klarity
Klarity: Uses AI to map, structure, and automate enterprise workflows.
4+ YOE4+ years shipping production-grade frontend products; strong React/TypeScript; Next.js; Tailwind; portfolio and GitHub; CS degree not required.
React, Next.js, TypeScript, Tailwind, Cursor, Claude Code, v0.dev, Lovable
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1mo
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Senior Frontend Engineer
San Francisco or New York City or United States
HybridFull Time
Beast Industries
Beast Industries: Produces digital media and consumer goods for MrBeast brands.
8+ YOE8+ years software engineering with deep frontend experience in JavaScript/TypeScript, performance optimization, accessibility, AI-assisted tooling, architecture ownership, and mentoring peers.
JavaScript, TypeScript, React, Vue, Angular, AI coding agents, CI/CD
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1mo
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Mid/Senior Frontend Developer
Krakow or San Francisco or Los Angeles or New York City or London or Singapore or Beijing or Seoul or Tokyo or Vancouver or Poland or North America or Europe or Asia or Africa or South America
RemoteFull Time
Sensor Tower
Sensor Tower: Provides digital market intelligence and mobile app analytics software.
4+ YOE4+ years engineering experience with JavaScript/TypeScript and React; ability to architect scalable frontend systems, design state management, write tests (Jest/Playwright), optimize web performance, mentor peers, and partner with product.
JavaScript, TypeScript, React, TanStack Query, React Router, Zustand, Redux, MobX, Next.js, Jest, Playwright, Highcharts, Ruby on Rails, Angular, ClickHouse, MongoDB, PostgreSQL, GitHub
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1w
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Frontend Engineer — Cluster OS
San Francisco, California, United States
OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
5+ YOE5+ years in Kubernetes infrastructure, strong frontend fundamentals with Next.js/React/Tailwind, Terraform/Helm/ArgoCD experience, Go proficiency, observability with Prometheus/Grafana.
Kubernetes, Next.js, React, Tailwind CSS, shadcn/ui, Convex, Terraform, Helm, ArgoCD, Go, Prometheus, Grafana, etcd, gRPC, PostHog, AWS, GCP, Azure
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