<div class="content-intro"><div>At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.</div><div> </div><div>We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.</div><div> </div><div>To learn more, visit <a href="http://www.mattermost.com/">www.mattermost.com</a></div></div><p><span data-contrast="auto">Mattermost is seeking a talented and passionate React Native Engineer to join our mobile engineering team and help deliver world-class mobile experiences for mission-critical industries like defense, intelligence, and critical infrastructure. You'll be responsible for building and maintaining our React Native applications that enable secure, real-time collaboration for organizations where reliability and security are non-negotiable.</span><span data-ccp-props="{}"> </span></p><p><span data-contrast="auto">As a React Native Engineer at Mattermost, you'll work closely with cross-functional teams to create mobile solutions that solve complex communication challenges in high-stakes environments. Your work will directly impact how critical organizations coordinate, share information, and respond to urgent situations. This role offers the unique opportunity to contribute to our open-source platform while building mobile applications that serve some of the world's most important missions.</span><span data-ccp-props="{}"> </span></p><p><span data-contrast="auto">Do you have a passion for designing and developing high-impact products? Do you want to work with a well-oiled, collaborative and highly senior team? Do you want to make an impact on open source? Help us build and grow one of the largest React Native and Go open-source projects.</span><span data-ccp-props="{}"> </span></p><p><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":240,"335559739":240}"><br></span>Responsibilities Include:</p><ul><li><span data-contrast="auto">Design, develop, and maintain high-performance capabilities for the Mattermost React Native application for iOS and Android platforms</span><span data-ccp-props="{}"> </span></li><li><span data-contrast="auto">Build responsive, accessible mobile interfaces that work seamlessly across different devices and screen sizes</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Implement secure communication features, push notifications, and real-time messaging capabilities</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Optimize mobile app performance, including bundle size, startup time, and memory usage</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Collaborate with backend engineers to integrate mobile apps with APIs and ensure smooth data synchronization</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Contribute to Mattermost's open-source React Native codebase, sharing solutions with the broader developer community</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Work with product managers and designers to translate user requirements into technical solutions and prototypes</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Implement comprehensive testing strategies including unit tests and automated end-to-end testing</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Debug and resolve mobile-specific issues across different platforms, devices, and operating system versions</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Participate in code reviews and provide mentorship to colleagues on mobile best practices</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Stay current with tools, libraries and frameworks including advancements in AI/LLM tools and best practices</span><span data-ccp-props="{"134233117":false,"134233118":false,"201341983":0,"335551550":1,"335551620":1,"335559685":720,"335559737":0,"335559738":0,"335559739":0,"335559740":259,"335559991":360}"> </span></li><li><span data-contrast="auto">Ensure our mobile application meets strict security and compliance requirements for enterprise and government clients</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li></ul><p><span data-ccp-props="{}"> Requirements:<br></span></p><ul><li>BS in Computer Science, Computer Engineering, or related field/experience </li><li>3+ years of professional experience developing mobile applications with React Native </li><li>Strong proficiency in JavaScript/TypeScript and React ecosystem including hooks, state management, and component architecture </li><li>Experience with native iOS and Android development concepts and the ability to write native modules when needed </li><li>Solid understanding of mobile app deployment processes for both App Store and Google Play Store </li><li>Proficiency with AI/LLM tools to improve and accelerate development </li><li>Knowledge of mobile-specific patterns including navigation, offline functionality, and platform-specific UI guidelines </li><li>Experience with state management libraries (Redux, Zustand, or similar) and async data handling </li><li>Proficiency with reactive programming patterns using RxJS and experience with local database solutions like WatermelonDB </li><li>Familiarity with mobile testing frameworks and debugging tools for React Native applications </li><li>Understanding of mobile security best practices and secure coding principles </li><li>Strong problem-solving skills and ability to work independently in a remote, distributed team environment </li><li>Excellent written and verbal communication skills for collaborating across time zones </li><li><strong>For candidates residing in the U.S</strong>.: This role may require the ability to obtain and maintain a U.S. government security clearance in the future. As such, U.S. applicants must be U.S. citizens and eligible under applicable clearance requirements. </li><li>Applicants must meet eligibility requirements for access to export-controlled information as defined by U.S. export control laws, including EAR and ITAR. </li></ul><p><span data-ccp-props="{}"> Preferences:<br></span></p><ul><li><span data-contrast="auto">Previous experience building end user products for enterprises or security-focused users</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Contributions to open-source projects</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Knowledge of accessibility standards and implementing inclusive mobile experiences</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Has worked fully remotely with global teams</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li><li><span data-contrast="auto">Expertise in defense, intelligence, or security-focused workflows<br></span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li></ul><p><em>Mattermost takes a market-based approach to pay and pay may vary depending on your location. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.</em></p><p><span data-ccp-props="{}"> </span></p><div class="content-pay-transparency"><div class="pay-input"><div class="title">Salary Range </div><div class="pay-range"><span>$130,000</span><span class="divider">—</span><span>$200,000 USD</span></div></div></div><div class="content-conclusion"><div>Mattermost is an EEO Employer, we are a remote-first, open-source company.</div><div> </div><div>We are continually working to expand our hiring in more countries and regions, ensuring compliance with local laws and regulations, which takes time.</div><div> </div><div>Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics.</div><div> </div><div>If you require accommodations during the interview process, please let us know—we’re happy to assist.</div></div>