Freelance Mobile App Developer (iOS / Android)

We're looking for skilled Mobile App Developers to join the Tendem project and build native and cross-platform mobile applications for real-world use cases. This part-time remote opportunity is ideal for professionals with hands-on experience shipping iOS and/or Android apps.

What You Will Do

As a Mobile App Developer, you'll design, build, and refine mobile applications across categories such as utilities, fitness/wellness, games, productivity, delivery, and content apps — for iOS, Android, or both, using native or cross-platform frameworks.

Why It Might Be a Fit

This freelance opportunity is great for those who want to work fully remote on their own schedule, apply their expertise to real-world technology projects, and participate in performance-based bonus programs that reward high-quality work and consistent delivery.

Requirements

• At least 3 years of relevant experience in mobile app development
• Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields
• Strong foundation in mobile application development, platform-specific UI/UX patterns, and building stable, high-quality mobile experiences for iOS and Android
• Hands-on experience with at least one of: React Native, Flutter, Swift/SwiftUI (iOS), or Kotlin/Jetpack Compose (Android)
• Solid 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 (notifications, camera, location, storage, biometrics)
• Experience with mobile build tools, code signing, and submission to App Store / Google Play
• Experience implementing in-app purchases, ads, or subscriptions is a plus
• Familiarity with backend services such as Firebase, Supabase, or similar is a plus
• Strong attention to detail and commitment to performance, stability, and platform polish
• Self-directed work ethic with the ability to ship complete mobile features independently
• Portfolio of shipped mobile apps (required, with App Store / Google Play links preferred)
• English proficiency: Upper-intermediate (B2) or above (required)

Benefits

• Work fully remote on your own schedule
• Apply your expertise to real-world technology projects
• Participate in performance-based bonus programs that reward high-quality work and consistent delivery
• Earn up to $60 per hour equivalent, depending on your level and pace of contribution