Freelance Mobile App Developer (iOS / Android)

Role overview

Mindrift is seeking a Freelance Mobile App Developer for the Tendem project to build native and cross-platform mobile applications for iOS and/or Android. You’ll work on stable, performant, user-friendly apps across categories such as utilities, fitness/wellness, games, productivity, delivery, and content.

Responsibilities

• Design, build, and refine mobile applications using React Native, Flutter, Swift (iOS), or Kotlin (Android)
• Implement responsive UIs following platform conventions (iOS HIG, Material Design)
• Integrate native device features (e.g., camera, push notifications, location, storage, biometrics)
• Connect apps to backend APIs and support offline state, caching, and sync
• Implement monetization features when required (in-app purchases, ads, subscriptions)
• Review, debug, optimize, and refactor code for correctness, performance, battery efficiency, and maintainability
• Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console)

Requirements

• 3+ years of relevant mobile app development experience (required)
• Hands-on experience with at least one of:
  • React Native
  • Flutter
  • Swift/SwiftUI (iOS)
  • Kotlin/Jetpack Compose (Android)
• Strong knowledge of mobile UI patterns, navigation, state management, and platform guidelines
• Experience integrating REST APIs, handling async data, and managing local storage
• Experience with native device APIs (notifications, camera, location, storage, biometrics)
• Familiarity with build/submission workflows (code signing, App Store / Google Play)
• Portfolio of shipped mobile apps (App Store / Google Play links preferred)
• English proficiency B2 or above (required)
• Self-directed ability to ship complete features independently

Nice-to-haves

• Experience with Firebase, Supabase, or similar backend services
• Experience implementing in-app purchases, ads, or subscriptions
• Bachelor’s/Master’s degree in a related technical field

Logistics & expectations

• Part-time remote (estimated 10–20 hours/week during active project phases)
• Freelance contractor role for the Tendem project

Compensation

• Up to $60/hour equivalent depending on level and contribution pace.