Freelance Mobile App Developer (iOS / Android)

Mindrift is looking for skilled Mobile App Developers (React Native, Flutter, Swift, or Kotlin) to join the Tendem project () and build native and cross-platform mobile applications for real-world use cases. In this role, you'll apply your mobile engineering expertise to build stable, performant, and user-friendly applications for iOS and Android. This part-time remote opportunity is ideal for professionals with hands-on experience shipping iOS and/or Android apps, working with platform APIs, and handling the full mobile development lifecycle. What We Do The Mindrift platform connects specialists with innovative technology projects. Our mission is to help develop high-quality AI technologies by combining real-world expertise from professionals across the globe with advanced AI development efforts. About the Role This is a freelance role for a Tendem project. As a Mobile App Developer, you'll design, build, and refine mobile applications across categories such as utilities, fitness/wellness, games, productivity, delivery, and content apps — for iOS, Android, or both, using native or cross-platform frameworks. Key Responsibilities Build mobile applications using React Native, Flutter, Swift (iOS), or Kotlin (Android). Implement responsive mobile UIs that follow platform conventions (iOS HIG, Material Design). Integrate native device features (camera, push notifications, location, storage, biometrics). Connect apps to backend APIs, handle offline state, caching, and synchronization. Implement monetization features where required (in-app purchases, ads, subscriptions). Review, debug, optimize, and refactor mobile application code to improve correctness, performance, battery efficiency, and maintainability. Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console). Educational qualifications At least 3 years of relevant experience in mobile app development (required). Bachelor's or Master's Degree in Computer Science, Engineering, Info