Freelance Mobile App Developer (iOS / Android)

Mindrift • Lebanon, PA

2d • Remote

About The Position

Mindrift is seeking skilled Mobile App Developers for the Tendem project, focusing on building native and cross-platform mobile applications for real-world use cases. This role involves applying mobile engineering expertise to create stable, performant, and user-friendly applications for both iOS and Android. It's a part-time, remote opportunity for professionals experienced in shipping apps, working with platform APIs, and managing the full mobile development lifecycle. The Mindrift platform connects specialists with innovative technology projects, aiming to develop high-quality AI technologies by combining global professional expertise with advanced AI development.

Requirements

• At least 3 years of relevant experience in mobile app development (required).
• 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.
• 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).

Nice To Haves

• Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields 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.

Responsibilities

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

Benefits

• Work fully remote on your own schedule with just a laptop and stable internet connection.
• Apply your expertise to real-world technology projects while gaining experience building high-quality solutions for a global platform.
• Participate in performance-based bonus programs that reward high-quality work and consistent delivery.

What This Job Offers

• Job Type: Part-time
• Career Level: Mid Level
• Education Level: Associate degree