Freelance Mobile App Developer (iOS / Android)

Role Overview

Mindrift is seeking a Freelance Mobile App Developer (AI Pilot) for the Tendem project. You’ll build and refine native and cross-platform mobile applications in a hybrid environment where AI agents handle repetitive tasks, while you provide mobile engineering expertise, platform-specific judgment, and quality control to deliver stable, performant apps for real devices.

Responsibilities

• Design, build, and refine mobile apps for iOS, Android, or both using native or cross-platform frameworks.
• Build responsive mobile UIs following 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 when needed: in-app purchases, ads, subscriptions.
• Review and evaluate AI-generated mobile code, refactoring for correctness, performance (including battery use), and maintainability.
• Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console).

Requirements

• At least 3 years of relevant mobile app development experience (required).
• Hands-on experience shipping iOS and/or Android apps.
• Strong foundation in mobile app development and platform-specific UI/UX patterns.
• Ability to work independently and ship complete features.
• Portfolio of shipped mobile apps (required, App Store / Google Play links preferred).
• English proficiency at Upper-intermediate (B2) or above (required).

Nice to Have

• BS/MS in Computer Science/Engineering/IT (or related) (plus).
• Experience with one or more of:
  • React Native
  • Flutter
  • Swift/SwiftUI (iOS)
  • Kotlin / Jetpack Compose (Android)
• Experience integrating REST APIs, async data, and local storage.
• Familiarity with build tools, code signing, and App Store / Google Play submission.
• Monetization experience (in-app purchases, ads, subscriptions).
• Familiarity with backend services like Firebase or Supabase.

Project Expectations

• Estimated 10–20 hours/week during active phases (estimate, not a guaranteed workload).

Compensation

• Up to $60/hour.