Freelance Mobile App Developer (iOS / Android)
MindriftJob Description
About Mindrift
Mindrift is looking for skilled Mobile App Developers (React Native, Flutter, Swift, or Kotlin) to join the Tendem project (tendem.ai) and build native and cross-platform mobile applications within our hybrid AI + human environment. In this role, as an AI Pilot, 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 Do
The 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 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)
- Evaluate AI-generated mobile code and refactor it for correctness, performance, battery use, and maintainability
- Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console)
Requirements
- At 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 plus
- Hands-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 guidelines
- Experience integrating REST APIs, handling async data, and managing local storage
- Familiarity with native device APIs (notifications, camera, location, storage, biometrics)
- Experience with mobile build tools, code signing, and submission to App Store / Google Play
- Strong attention to detail and commitment to performance, stability, and platform polish
- Self-directed work ethic with the ability to ship complete mobile features independently
- Portfolio of shipped mobile apps (required, with App Store / Google Play links preferred)
- English proficiency: Upper-intermediate (B2) or above (required)
Nice to Have
- Experience implementing in-app purchases, ads, or subscriptions
- Familiarity with backend services such as Firebase, Supabase, or similar
Project Time Expectations
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.
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