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 (https://tendem.ai/) and build native and cross-platform mobile applications within our hybrid AI + human environment. In this role, as an AI Pilot - that's how we refer to this position at Mindrift - you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide mobile engineering expertise, platform-specific judgment, and quality control to ensure apps are stable, performant, and ready for real users on real devices. 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 DoThe Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.About The RoleThis 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 ResponsibilitiesBuild 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 synchronizationImplement monetization features where required (in-app purchases, ads, subscriptions)Evaluate AI-generated mobile code and refactor it for correctness, performance, battery use, and maintainabilityDebug platform-specific issues and prepare builds for distribution (TestFlight, Play Console)Requirements And BenefitsAt least 3 years of relevant experience in mobile app development (required)Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plusCandidates should have a strong foundation in mobile application development, platform-specific UI/UX patterns, and building stable, high-quality mobile experiences for iOS and Android. We are looking for specialists who can confidently work with native or cross-platform frameworks, integrate device APIs and backend services, and refine AI-assisted output into production-ready mobile applications. Strong attention to detail, performance awareness, and the ability to work independently are essentialHands-on experience with at least one of: React Native, Flutter, Swift/SwiftUI (iOS), or Kotlin/Jetpack Compose (Android)Solid understanding of mobile UI patterns, navigation, state management, and platform guidelinesExperience integrating REST APIs, handling async data, and managing local storageFamiliarity with native device APIs (notifications, camera, location, storage, biometrics)Experience with mobile build tools, code signing, and submission to App Store / Google PlayExperience implementing in-app purchases, ads, or subscriptions is a plusFamiliarity with backend services such as Firebase, Supabase, or similar is a plusStrong attention to detail and commitment to performance, stability, and platform polishSelf-directed work ethic with the ability to ship complete mobile features independentlyPortfolio of shipped mobile apps (required, with App Store / Google Play links preferred)English proficiency: Upper-intermediate (B2) or above (required)Project time expectations For this project, tasks are estimated to require around 10-20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active.CompensationOn this project, contributors can earn up to $60 per hour equivalent, depending on their level and pace of contribution.Compensation varies across projects depending on scope, complexity, and required expertise. Please note that other projects on the platform may offer different earning levels based on their requirements.Why this freelance opportunity might be a great fit for you? Work fully remote on your own schedule with just a laptop and stable internet connection. Gain hands-on experience in a unique hybrid environment where human expertise and AI agents collaborate seamlessly — a distinctive skill set in a rapidly growing fieldParticipate in performance-based bonus programs that reward high-quality work and consistent delivery