Freelance Mobile App Developer (iOS / Android)

Role Overview

Mindrift is seeking a Freelance Mobile App Developer for the Tendem project. In this AI Pilot role, you’ll collaborate with Tendem Agents that handle repetitive tasks, while you provide mobile engineering expertise to build and refine production-ready mobile apps for iOS, Android, or both.

Responsibilities

• Design, build, and refine mobile applications (utilities, fitness/wellness, games, productivity, delivery, content)
• Develop using React Native, Flutter, Swift (iOS), or Kotlin (Android)
• Implement responsive, platform-convention UI (e.g., iOS HIG, Material Design)
• Integrate native device capabilities (camera, push notifications, location, storage, biometrics)
• Connect apps to backend APIs; manage offline state, caching, and synchronization
• Implement monetization features when needed (in-app purchases, ads, subscriptions)
• Evaluate AI-generated mobile code and refactor 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 mobile app development experience (required)
• Degree in Computer Science/Engineering/IT (Bachelor’s or Master’s is a plus)
• Strong foundation in iOS/Android UI/UX patterns and stable, high-quality mobile delivery
• Hands-on experience with at least one of:
  • React Native
  • Flutter
  • Swift/SwiftUI (iOS)
  • Kotlin/Jetpack Compose (Android)
• Solid understanding of mobile UI patterns, navigation, and state management
• Experience integrating REST APIs, async data handling, and local storage
• Familiarity with native device APIs (notifications, camera, location, storage, biometrics)
• Experience with mobile build tools, code signing, and submitting to App Store / Google Play
• English proficiency: B2 or above (required)
• Portfolio of shipped mobile apps (required; App Store / Google Play links preferred)

Nice to Haves

• Experience with in-app purchases, ads, subscriptions
• Familiarity with backend services such as Firebase or Supabase

Workload & Compensation

• Estimated 10–20 hours/week during active project phases (not guaranteed)
• Compensation: up to $60/hour