Freelance Mobile App Developer (iOS / Android)

Role overview

Freelance Mobile App Developer for the Tendem project at Mindrift. You will build native and cross-platform mobile applications for iOS and/or Android, applying mobile engineering skills to deliver stable, performant, user-friendly apps.

Responsibilities

• Design, build, and refine mobile applications for categories such as utilities, fitness/wellness, games, productivity, delivery, and content
• Build apps using React Native, Flutter, Swift (iOS), or Kotlin (Android)
• Create responsive UIs that follow platform conventions (iOS HIG, Material Design)
• Integrate native device features (e.g., camera, push notifications, location, storage, biometrics)
• Connect applications to backend APIs; handle offline state, caching, and sync
• Implement monetization features when needed (e.g., in-app purchases, ads, subscriptions)
• Debug, optimize, and refactor for correctness, performance, battery efficiency, and maintainability
• Fix platform-specific issues and prepare releases for distribution (TestFlight, Play Console)

Requirements

• At least 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 understanding of mobile UI patterns, navigation, state management, and platform guidelines
• 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 publishing to App Store / Google Play
• Ability to work independently and attention to detail
• Portfolio of shipped mobile apps (required; App Store / Google Play links preferred)
• English proficiency B2+ (required)

Nice-to-haves

• Experience implementing in-app purchases, ads, or subscriptions
• Familiarity with backend services such as Firebase, Supabase, or similar
• Bachelor’s or Master’s degree in Computer Science/Engineering/related field

Work model & expectations

• Part-time remote freelance role
• Estimated effort: 10–20 hours/week during active phases (not guaranteed)

Compensation

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