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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Mobile Engineer (React Native) - **Company:** FanFixApp, LLC - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $160,000.0 - $230,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Data Analysis, Apple IOS, Application Services, Software Quality, Continuous Integration, Memory Management, Github, Mobile Application Software, Performance Tuning, Software Engineering, Software Testing Automation Framework, Systems Integration, TypeScript, ReactJS, Delivery Pipeline, Ios Frameworks, Pixel Perfect, Backend, Integration Tests, Sentry, Graphql, React Native, Google Play, Restful APIs, Multiplatform, Monolithic Repository - **Published:** September 22, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=14c9e1ad30821248 ## About the Role * React Native: Extensive experience building cross-platform apps with React Native, including navigation, animations, and performance optimization. * Expo & EAS: Proven experience with Expo SDK, EAS Build/Submit/Update, and OTA delivery workflows. * TypeScript: Strong command of TypeScript for clean, type-safe, and maintainable codebases. * UI Frameworks: Familiarity with modern React Native UI frameworks such as NativeWind and shadcn/ui. * Mobile Performance: Deep understanding of app startup time, bundle optimization, memory management, and frame-rate stability. * API Integration: Proven experience integrating GraphQL or REST APIs using tools such as React Query or Apollo Client. * Cross-Platform Development: Knowledge of bridging native modules, managing platform-specific configurations, and integrating third-party SDKs. * Testing: Proficient with Jest and React Native Testing Library, plus experience with end-to-end frameworks such as Detox or Maestro. * Attention to Detail: Demonstrates precision in UI execution, state management, and platform-specific behavior. * Initiative: Self-driven, with the ability to take ownership of projects and deliver features from conception to completion., * Design Systems: Experience contributing to or maintaining a shared cross-platform design system (e.g., shadcn/ui + NativeWind + Radix primitives). * App Distribution: Familiarity with TestFlight, Google Play Console, and automated release pipelines. * CI/CD Experience: Understanding of GitHub Actions, EAS Build pipelines, and remote caching in monorepo environments. * Feature Flags & Analytics: Experience integrating PostHog, LaunchDarkly, or similar tools for analytics and feature rollout. * Observability: Familiarity with Sentry, Expo Application Services, or equivalent tools for monitoring app health and stability. * Monorepo Development: Comfortable working in Turborepo with shared packages, utilities, and backend adapters. * Proactive Problem Solver: Anticipates and resolves performance and UX challenges early. Technical Innovator: Passionate about adopting new mobile technologies and improving development velocity. * Adaptability: Thrives in a fast-moving startup environment with evolving priorities and product goals. ## Description As a Senior Mobile Engineer at Fanfix, you'll design and develop scalable mobile applications using React Native and Expo. Working closely with product, design, and backend teams, you'll deliver fast, reliable, and visually polished native experiences on iOS and Android. With expertise in TypeScript, NativeWind, and modern mobile UI frameworks, you'll ensure code quality, maintainability, and scalability while improving app performance and mentoring other engineers. This role is suited for a proactive engineer who thrives in a fast-paced startup environment and is passionate about crafting smooth, high-quality mobile experiences. You'll report to the Lead Application Engineer., * Application Development: Design, build, and maintain native app features that deliver exceptional performance, scalability, and user experience. * Collaboration: Partner with product managers, designers, and backend engineers to create intuitive, pixel-perfect mobile experiences. * Testing & Quality: Write and maintain robust unit and integration tests to ensure code quality and stability. * Performance Optimization: Continuously improve app performance, startup time, and responsiveness. * Feature Ownership: Take ownership of key mobile features or modules from ideation to release. * Architecture Contribution: Participate in technical planning and help shape the future of Fanfix's mobile architecture and tooling. * Mentorship: Guide and support junior and mid-level engineers to strengthen the team's native expertise. ## Related Videos - [There's an app for that - on the role of cross platform development in the app development ecosystem](https://www.wearedevelopers.com/videos/278-there-s-an-app-for-that-on-the-role-of-cross-platform-development-in-the-app-development-ecosystem) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [From Doubt to Confidence: How Sentry Uses Verdaccio to Bulletproof SDK Releases](https://www.wearedevelopers.com/videos/739-from-doubt-to-confidence-how-sentry-uses-verdaccio-to-bulletproof-sdk-releases) - [Building Better Apps with React Native](https://www.wearedevelopers.com/videos/1466-building-better-apps-with-react-native) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025) - [A Guide to Choosing the Right Tools for App Developers](https://www.wearedevelopers.com/magazine/391-a-guide-to-choosing-the-right-tools-for-app-developers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 103 - Superb Owl Trafficking](https://www.wearedevelopers.com/magazine/388-dev-digest-103-superb-owl-trafficking)