1,347 senior react engineer jobs at 661 companies in California
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Senior React Native Engineer
San Francisco or Los Angeles
$160k-$210k/yrOnsiteFull Time
Arena Club: Digital marketplace and vaulting service for sports collectibles
7+ YOEBachelor's in CS/Engineering, 7+ years mobile app development, proficiency in React Native and iOS/Android ecosystems, familiarity with Rx, IoC/DI, Bazel, A/B testing, analytics, CI and automated testing; experience leading mobile launches and using AI tools (Claude, Cursor).
HR MGMT 10: Provides employer of record and human resources support services.
Extensive experience with React Native and Expo; ability to ship mobile apps via App Store/TestFlight; familiarity with Claude AI; on-site in Costa Mesa.
React Native, Expo, Claude AI, TestFlight, App Store Connect, Google Play Console, Firebase, Supabase, AWS, REST, GraphQL, Git, CI/CD, Expo EAS
Mochi Health: Provides telehealth weight management and prescription medication services.
5+ YOE5+ years frontend experience with deep React Native and Expo expertise, TypeScript, mobile infrastructure, HealthKit/Health Connect integrations, EAS, and strong product sense for healthcare apps.
React Native, Expo, TypeScript, Apple HealthKit, Google Health Connect, EAS (Expo Application Services), Config Plugins, Swift, Objective-C, Kotlin, Java, Sentry, Codex 5.3, Claude Opus 4.6
Tapcart: Platform for Shopify merchants to create mobile shopping apps.
5+ YOE5+ years engineering/product experience; demonstrated frontend, backend, and database skills; active GitHub presence; experience with React Native and building AI agent orchestration preferred.
Senior Software Engineer, React - Endpoint State and Control Team
California or Colorado or Connecticut or Florida or Georgia or Illinois or Kansas or Massachusetts or Maryland or Maine or New Jersey or North Carolina or New York or Ohio or Oregon or Tennessee or Texas or Virginia or Washington or Austin or Tampa
$140k-$200k/yrHybridFull Time
NinjaOne: Unified IT platform for automated endpoint management and security.
7+ YOE7+ years frontend experience with expert React and TypeScript, strong testing habits, experience with complex data-driven UI, API contract design, and server-state management.
Scope: Building custom AI systems and agents for enterprise workflows.
6+ YOESenior software engineer with 6+ years of production experience across frontend and backend; proficient in Python, TypeScript, React/Next.js; Docker/Kubernetes on cloud; CI/CD; and LLM frameworks.
RAVE Aerospace: Developing in-flight entertainment and connectivity systems for airlines.
6+ YOEBachelor's in Engineering/CS or equivalent, 6+ years software development, experience with C/C++ and modern stacks (Qt/QML, Node.js, Golang, React, Typescript, Python), and systems-level debugging.
Austin or Chicago or Dallas or Denver or Los Angeles or San Diego or San Francisco
$131k-$169k/yrHybridFull Time
Karbon: Practice management software for accounting firms.
4+ YOESenior Security Engineer with 4+ years in security or development; strong communication; cloud and AI experience; hands-on with security tooling and threat modelling.
San Francisco or New York or Portland or Canada or United States
$167k-$208k/yrHybridFull Time
Mercury: Banking services and financial software designed for startup companies.
Senior frontend engineer with design sensibility: expert HTML/CSS and web animation (GSAP, Web Animations API), proficient in React and Next.js, experience as technical lead, familiarity with headless CMS (DatoCMS), strong performance focus and portfolio required.
HTML, CSS, GSAP, Web Animations API, React, Next.js, DatoCMS
DocuSignNASDAQ: DOCU: Provides electronic signature and agreement management software solutions.
8+ YOEBachelor's in CS or STEM with 8+ years of software engineering experience; full-stack with Java/JavaScript-TS, React; experience with Oracle Fusion Cloud APIs, OIC, Python, AI/ML, cloud-native tech, and CI/CD.
Lila Sciences: Develops an AI platform for autonomous scientific research and discovery.
5+ YOEBachelor’s or Master’s in CS/Engineering; 5-8+ years backend/full-stack exp; React, TypeScript, FastAPI, Python; AWS, Kubernetes; AI tooling; strong collaboration.
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
6+ YOESenior full stack engineer with 6+ years experience in React/Redux, Node.js, REST APIs, Linux, and cloud/web applications; strong communication and collaboration.
React, Redux, JavaScript, Node.js, Mocha, REST APIs, Linux
IXL Learning: Provides personalized digital learning platforms and educational resources.
6+ YOE6+ years in software engineering; BS or higher in CS; OO programming; Node/React/Next.js; MySQL; REST APIs; AWS (EC2/S3/RDS); MongoDB; strong problem solving and communication; interest in EdTech.