Freelance Mobile App Developer (iOS / Android)

About the role

Mindrift is looking for skilled mobile app developers (React Native, Flutter, Swift or Kotlin) to join a Tendem project and build native and cross-platform mobile applications for real-world use cases. The role is part-time and remote, suited to professionals with hands-on experience shipping iOS and/or Android apps, working with platform APIs and handling the full mobile development lifecycle. Tasks are estimated at around 10-20 hours per week during active phases.

Key responsibilities

• Build mobile applications using React Native, Flutter, Swift (iOS) or Kotlin (Android)
• Implement responsive mobile UIs following platform conventions (iOS HIG, Material Design)
• Integrate native device features such as camera, push notifications, location, storage and 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 code to improve correctness, performance, battery efficiency and maintainability
• Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console)

Required profile

• At least 3 years of relevant mobile app development experience
• Bachelor's or Master's degree in a technical field is a plus
• Portfolio of shipped mobile apps (required); links to App Store / Google Play preferred
• Upper-intermediate (B2) or above English proficiency (required)
• Ability to work independently, with attention to detail and performance awareness

Required skills

• Hands-on experience with React Native, Flutter, Swift/SwiftUI or Kotlin/Jetpack Compose
• Solid understanding of mobile UI patterns, navigation, state management and platform guidelines
• REST API integration, async data handling and local storage
• Familiarity with mobile build tools, code signing and submission to App Store / Google Play
• Familiarity with Firebase, Supabase or similar backend services is a plus

What we offer

• Remote work on your own schedule, with just a laptop and stable internet
• Potential earnings of up to $30 per hour depending on level and pace
• Performance-based bonus programs for high-quality work and consistent delivery