Mobile App Developer (React Native, Flutter, Swift, or Kotlin)

About Mindrift

Mindrift connects specialists with AI projects from major tech innovators, aiming to unlock Generative AI's potential through global real-world expertise.

About the Role

This is a freelance role for the Tendem project, focused on designing, building, and refining mobile applications across various categories (utilities, fitness, games, productivity, etc.) 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 UIs adhering to platform conventions (iOS HIG, Material Design).
• Integrate native device features (camera, push notifications, location, storage, biometrics).
• Connect apps to backend APIs, manage offline state, caching, and synchronization.
• Implement monetization features (in-app purchases, ads, subscriptions) where required.
• Evaluate and refactor AI-generated mobile code for correctness, performance, battery usage, and maintainability.
• Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console).

Requirements

• Minimum 3 years of relevant experience in mobile app development (required).
• Strong foundation in mobile application development, platform-specific UI/UX patterns, and building stable, high-quality mobile experiences for iOS and Android.
• 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.
• Experience with in-app purchases, ads, or subscriptions is a plus.
• Familiarity with backend services like Firebase, Supabase, or similar is a plus.
• 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, App Store / Google Play links preferred).
• English proficiency: Upper-intermediate (B2) or above (required).
• A Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus.

Project Details

• Project Time Commitment: Estimated 10–20 hours per week during active phases.
• Compensation: Up to $60 per hour equivalent, based on contribution level and pace.

Why This Opportunity is Great for You

• Fully Remote: Work on your own schedule with just a laptop and internet connection.
• Hybrid AI + Human Environment: Gain unique experience collaborating with AI agents, a valuable skill in today's market.
• Performance Bonuses: Opportunities for performance-based bonuses for high-quality work.