> Markdown version of [/jobs/ext/2720508-react-native-engineer](https://www.wearedevelopers.com/jobs/ext/2720508-react-native-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # React Native Engineer - **Company:** Mattermost Inc - **Location:** United States - **Experience:** Expert - **Salary:** $165,000.0 - $225,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Artificial Intelligence, Android Software Development, IOS Applications, Mobile Application Development, Computer Networks, Data Synchronization, Networking Basics, Open Source Technology, Mobile Security, TypeScript, WebSocket, RxJS, Backend, Free and Open-Source Software, Reactive Programming, React Native - **Published:** September 4, 2026 - **Apply:** https://startup.jobs/senior-react-native-engineer-mattermost-company-8291997 ## About the Role We care about what you've built and the problems you've solved - not how long you've been building. If you have strong outcomes to speak to in mobile engineering, we want to hear from you., * Demonstrated experience with React Native and JavaScript/TypeScript - you can speak to real tradeoffs you've navigated * Strong understanding of networking fundamentals: HTTP, WebSockets, connection lifecycle, and how to build resilient apps over unreliable networks * Experience with offline-first design - local persistence, sync strategies, and conflict resolution * Familiarity with native iOS and/or Android development * AI fluency and a track record of adapting to new tooling as the landscape evolves Preferred * Experience with reactive programming patterns (e.g. RxJS) or mobile database solutions (e.g. WatermelonDB) * Familiarity with the Expo framework, including migration from bare React Native * Mobile security best practices in enterprise or regulated environments * Background in defense, intelligence, or critical infrastructure products * Experience improving mobile developer tooling or testing infrastructure * Open-source contributions * Experience in distributed or remote-first engineering teams ## Description You'll partner closely with backend and platform teams, shape how we approach mobile at a systems level, and help raise the bar for how we build and test across iOS and Android., * Architect and evolve the React Native application for deployment environments with limited or unreliable connectivity * Define how the app handles WebSocket reliability and data synchronization across degraded network conditions * Design offline-first storage and sync patterns, including conflict resolution strategies * Shape mobile development tooling, code organization, and testing infrastructure * Drive performance improvements across network efficiency, package size, and memory consumption * Own testing strategy for mobile platform-specific challenges * Mentor engineers on mobile architecture and best practices * Uphold security and compliance standards required by government and enterprise clients * Contribute to the open-source codebase ## Related Videos - [How to Create New RxJS Operators](https://www.wearedevelopers.com/videos/683-how-to-create-new-rxjs-operators) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Minimal infrastructure for Real‑Time Phone Agents: transcripts in, responses out](https://www.wearedevelopers.com/videos/1736-minimal-infrastructure-for-real-time-phone-agents-transcripts-in-responses-out) - [Building Better Apps with React Native](https://www.wearedevelopers.com/videos/1466-building-better-apps-with-react-native) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Leveraging Server-Sent Events (SSE) for Efficient Data Streaming in UI Development](https://www.wearedevelopers.com/videos/905-leveraging-server-sent-events-sse-for-efficient-data-streaming-in-ui-development) ## 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) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Top 5 React Form Libraries for Developers](https://www.wearedevelopers.com/magazine/399-top-5-react-form-libraries-for-developers)