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Freelance Mobile App Developer (iOS / Android)

1 day, 7 hours ago
United States
Freelance
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.
  • Implement responsive mobile interfaces that follow iOS and Android design 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 where needed.
  • Review AI-generated mobile code and refactor it for correctness, performance, battery use, and maintainability.
  • Debug platform-specific issues and prepare app builds for distribution through TestFlight and Google Play Console.
  • Design, build, and refine mobile applications across multiple app categories, including utilities, fitness, games, productivity, delivery, and content apps.

Requirements

  • At least 3 years of relevant experience in mobile app development.
  • Hands-on experience with at least one of 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 asynchronous 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 App Store / Google Play submission.
  • Experience implementing in-app purchases, ads, or subscriptions is a plus.
  • Familiarity with backend services such as Firebase, Supabase, or similar is a plus.
  • Portfolio of shipped mobile apps is required, with App Store or Google Play links preferred.
  • Upper-intermediate English proficiency (B2) or above is required.

Benefits

  • Fully remote work with the flexibility to work on your own schedule.
  • Up to $60 per hour equivalent, depending on level and pace of contribution.
  • Performance-based bonus programs for high-quality work and consistent delivery.
  • Hands-on experience in a hybrid environment where human experts collaborate with AI agents.
  • Part-time workload of about 10–20 hours per week during active project phases.
  • Only a laptop and stable internet connection are needed to work on the project.

Interested in this position?

Apply directly on the company website

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