298 senior react developer jobs at 132 companies in Startup, WA
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Senior React Developer
Seattle, Washington, United States
OnsiteFull Time
5+ YOE5+ years frontend experience with TypeScript and React, Bachelor\u0002s or equivalent, strong debugging, familiarity with frontend toolchain, and experience with real-time or 3D web graphics preferred.
TypeScript, React, Three.js, React Three Fiber, Drei, XState, Vite, npm, pnpm, Storybook, Vitest, Cypress, Testing Library, WebGL, Protocol Buffers, gRPC-web, WebSockets, TanStack Router, TanStack Query, Zustand, Tailwind CSS, Floating UI
1mo
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React-Native Engineer (Senior or Staff)
Seattle, Washington, United States
$180k-$245k/yr HybridFull Time
5+ YOE5+ years software engineering experience, 3+ years with React and React-Native, strong HTML/CSS, expert with a statically typed language (Java or Typescript), bachelor's in CS/Engineering or equivalent.
React, React-Native, Node.js, Typescript, HTML, CSS, Google Cloud Platform (GCP)
1mo
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.Net/React Senior Developer
Seattle, Washington, United States
$100k-$120k/yr OnsiteFull Time
5+ YOE5+ years experience; proficiency in .NET/.NET Core,C#,React,SQL; experience with application architecture, microservices,Azure and CI/CD; bachelor's in computer science.
.NET Core, .NET, C#, HTML5, CSS3, React, JavaScript, SQL, PL SQL, SQL Server, Oracle, Microsoft Azure, Azure Storage, CI/CD
1mo
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Senior Front End Software Engineer, React
Seattle, Washington, United States
$191k-$253k/yr OnsiteFull Time
Proficiency with React and TypeScript, experience building real-time user interfaces, strong engineering background, ability to work with customers, and eligibility to obtain U.S. Top Secret clearance.
React, TypeScript, Lattice OS
3mo
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Senior Software Engineer, Fullstack
Seattle, Washington, United States
$126k-$189k/yr OnsiteFull Time
8+ YOE8+ years software development; JavaScript/HTML/CSS; Python; React; cloud platforms (AWS or Google Cloud); analytics/observability tools; AI-enabled applications; strong communication.
React, Python, AWS, Google Cloud, Datadog, Heap
3mo
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Senior Software Engineer - Conversational Search
Seattle, Washington, United States
$167k-$204k/yr OnsiteFull Time
5+ YOE5+ years full-stack software development, React and Java; experience with frontend tech, AI/LLMs, scalable web apps, leadership and mentoring.
Java, JavaScript, React, TypeScript, SQL, Hibernate, PostgreSQL, AWS, Redis, Kafka, Kubernetes, GraphQL, Sierra AI SDK, OpenAI APIs, MCP, RAG
3mo
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Senior Software Development Engineer
Seattle, Washington, United States
$159k-$302k/yr OnsiteFull Time
10+ YOESenior software engineer with 10+ years of experience, expertise in full-stack development, AI-native systems, and scalable architectures.
React, Web Components, HTML, CSS, JavaScript, TypeScript, Node.js, AI tooling, Generative AI, LLMs, NewRelic, Splunk
2mo
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Senior Software Engineer - Agentic AI Applications
Seattle, Washington, United States
$152k-$230k/yr RemoteFull Time
Senior full-stack engineer with AI integration experience, strong TypeScript React/Next.js frontend and Python/SQL backend, API design, CI/CD, and on-call resilience.
TypeScript, React, Next.js, Python, SQL, REST, GraphQL, Docker, CI/CD, WebSockets
3mo
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Senior Software Engineer
Seattle, Washington, United States
$155k-$211k/yr HybridFull Time
5+ YOE5+ years of professional software engineering; strong TypeScript/Node.js; React; distributed systems; SQL/NoSQL databases; Kafka/RabbitMQ; Docker/Kubernetes; cloud deployments; strong communication.
TypeScript, Node.js, React, Kafka, RabbitMQ, Docker, Kubernetes, AWS, Azure, GCP, SQL, NoSQL
1w
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Software Development Engineer IV, React Native
Mountlake Terrace, Washington, United States
$136k-$231k/yr HybridFull Time
8+ YOE8+ years software engineering experience,5+ years React Native in production,proficiency in JavaScript/TypeScript,experience with iOS/Android,REST/GraphQL integration,CI/CD and mentoring skills.
React Native, JavaScript, TypeScript, REST APIs, GraphQL, Swift, Kotlin, Azure, CI/CD, GitHub Copilot, Cursor, App Store, Google Play, OAuth, OpenID Connect
3mo
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Backend Senior Software Engineer
Austin or Bellevue
$111k-$172k/yr HybridFull Time
2+ YOESenior backend engineer with a bachelor's or master’s in STEM and 2+ years (or 5+ yrs directly) of related experience; strong coding and problem-solving skills.
Java, C++, HTML, CSS, JavaScript, Python, C#, PHP, Angular, React, Kubernetes, Docker, APIs, SQL
1mo
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Senior iOS Engineer
Irvine or New York City or San Francisco or Seattle
$168k-$262k/yr OnsiteFull Time
6+ YOE6+ years professional iOS development with Swift, experience shipping App Store apps, strong architecture and performance skills, mentoring experience, familiarity with hybrid WebView/React integration.
Swift, React, React Native, WebView, Claude Code, GitHub Copilot, Cursor
4w
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Senior Software Engineer
Los Angeles or Seattle
$143k-$214k/yr OnsiteFull Time
7+ YOE7+ years professional software experience; cloud-native development on AWS; full‑stack with React and TypeScript; experience with serverless, containerized apps, RAG/LLM integrations, GraphQL/REST; strong communication and mentorship skills.
React, TypeScript, AWS, Lambda, ECS, DynamoDB, S3, Step Functions, API Gateway, Fargate, GraphQL, LLMs, vector databases
3mo
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Senior Full Stack Software Development Engineer - AI, Search & Knowledge
Seattle, Washington, United States
OnsiteFull Time
7+ YOESenior full-stack engineer with 7+ years, expert in TS/React, Go or Python, REST/gRPC/GraphQL, cloud platforms, Kubernetes; strong UX, data-heavy UI, cross-functional collaboration.
TypeScript, React, Tailwind, Go, Python, REST, gRPC, GraphQL, AWS, GCP, Azure, Kubernetes
3mo
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Senior AI Software Engineer, High Value Send
Seattle, Washington, United States
$180k-$225k/yr HybridFull Time
8+ YOESenior AI Software Engineer with 8+ years in software development; strong frontend (TypeScript/React) and backend (Java, Kotlin, Go, Python); cloud experience (AWS/GCP/Azure); fintech familiarity.
TypeScript, React, React Native, iOS, Android, Java, Kotlin, Go, Python, AWS, GCP, Azure
2mo
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Senior Full-Stack WebApp Engineer
Bellevue, Washington, United States
$98k-$244k/yr OnsiteFull Time
5+ YOE5+ years of professional full-stack web engineering experience; strong TypeScript and React; Kotlin/Java on JVM or TypeScript backend; REST/gRPC, PostgreSQL, AWS, containers; testing discipline; strong communication.
TypeScript, React, Kotlin, Java, REST, gRPC, protobuf, PostgreSQL, DynamoDB, Redis, AWS, Docker, Kubernetes, CI/CD, Linkerd, ArgoCD, Terraform, OpenTelemetry, Grafana, Datadog
2w
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Senior Software Engineer I
Aventura or Boston or New York City or Seattle
$150k-$166k/yr OnsiteFull Time
5+ YOE5+ years professional software development, BS in CS or equivalent, strong backend skills (Go/Java), Python experience valued, familiarity with React, Kafka, cloud microservices, CI/CD, and strong communication.
Go, Java, Python, React, Apache Kafka, MSK, Spark, Databricks, Ruby on Rails, AWS, GCP, Azure, CI/CD, LLM
5d
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Senior Software Engineer - HYBRID
Richardson or Dallas or Bethesda or Seattle
$100k-$215k/yr HybridFull Time
5+ YOE5+ years software development and 4+ years backend experience required. Requires full-stack expertise with React, JavaScript, .NET or Java, databases, cloud platforms, and a relevant bachelor's or master's degree or equivalent experience.
React, TypeScript, JavaScript, ASP.NET Core, Java, Spring Boot, SQL, JSON, XML, YAML, Azure, AWS, GCP, Docker, Kubernetes, RESTful APIs, Python, Go, PowerShell, HTML5, CSS3, ReactJS, Redux, Hooks, NoSQL
1mo
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Senior iOS Engineer, Twitch
Seattle or New York or Irvine or San Francisco
$193k-$262k/yr OnsiteFull Time
6+ YOE6+ years professional software and iOS development experience, strong Swift proficiency, experience leading architecture and mentoring engineers, production App Store shipping, and familiarity with hybrid WebView/React integrations and AI dev tools.
Swift, React, React Native, WebView, Claude Code, GitHub Copilot, Cursor
5d
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Senior Software Engineer, Frontend Platform
United States or San Francisco or New York City or Los Angeles or Boston or Seattle or Washington or San Diego or Chicago or Austin or Dallas or Portland or Denver or Philadelphia or Baltimore or Sacramento or Minneapolis or Miami or Atlanta or Phoenix or Orlando or Las Vegas or Salt Lake City or Madison or Birmingham or San Antonio or Spokane or Toronto
$125k-$210k/yr HybridFull Time
Significant production software experience with deep React and TypeScript expertise, full-stack fundamentals, mobile experience, design systems, Figma, and hands-on AI-assisted development.
React, TypeScript, React Native, Figma, Cursor, Claude, Storybook, style-dictionary, Framer Motion, Rive, Lottie, Expo
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