Freelance Mobile App Developer (iOS / Android)

Mindrift connects specialists with innovative technology projects, combining real-world expertise with advanced AI development to create high-quality AI technologies.

About The Role

This is a freelance role for the 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.

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)

Qualifications

• 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

Skills

• 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 implementing in-app purchases, ads, or subscriptions is a plus
• Familiarity with backend services such as 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, with App Store / Google Play links preferred)
• English proficiency: Upper-intermediate (B2) or above (required)

Schedule

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.

Pay

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.