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Freelance iOS / Android Developer (Native & Cross-Platform Apps)

1 month, 1 week ago
United States
Contract
Junior
Mobile Engineer
Mobile Development
Android Firebase Flutter iOS Jetpack Compose Kotlin React Native REST API Supabase Swift SwiftUI
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Description

  • Build mobile applications using React Native, Flutter, Swift, or Kotlin.
  • Design responsive mobile user interfaces that follow iOS and Android platform conventions.
  • Integrate native device features such as camera, push notifications, location, storage, and biometrics.
  • Connect mobile apps to backend APIs and manage offline state, caching, and synchronization.
  • Implement monetization features such as in-app purchases, ads, and subscriptions when needed.
  • Review AI-generated mobile code and refactor it for correctness, performance, battery use, and maintainability.
  • Debug platform-specific issues and prepare builds for App Store, TestFlight, and Google Play distribution.
  • Work across the full mobile development lifecycle to deliver stable, production-ready applications.

Requirements

  • At least 3 years of relevant experience in mobile app development.
  • Hands-on experience with at least one of the following: React Native, Flutter, Swift/SwiftUI, or Kotlin/Jetpack Compose.
  • Strong 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 such as notifications, camera, location, storage, and biometrics.
  • Experience with mobile build tools, code signing, and submission to the App Store or Google Play.
  • Portfolio of shipped mobile apps is required, with App Store or Google Play links preferred.
  • English proficiency at Upper-intermediate (B2) level or above is required.
  • Bachelor's or Master's degree in Computer Science, Engineering, Information Technology, or a related technical field is a plus.
  • Experience implementing in-app purchases, ads, or subscriptions is a plus.
  • Familiarity with backend services such as Firebase, Supabase, or similar is a plus.

Benefits

  • Work fully remote on your own schedule with only a laptop and stable internet connection.
  • Earn up to $60 per hour equivalent depending on your level and pace of contribution.
  • Participate in performance-based bonus programs for high-quality work and consistent delivery.
  • Gain hands-on experience in a hybrid environment where human experts and AI agents collaborate.

Interested in this position?

Apply directly on the company website

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