Freelance Mobile App Developer (iOS / Android)

Role Overview

Freelance Mobile App Developer (iOS / Android) for the Tendem project. At Mindrift, this position is called an AI Pilot: you collaborate with Tendem Agents for repetitive tasks, while you provide mobile engineering expertise, platform judgment, and quality control to deliver stable, high-performing apps for real devices.

Responsibilities

• Design, build, and refine mobile applications for utilities, fitness/wellness, games, productivity, delivery, and content apps
• Build with one or more of: React Native, Flutter, Swift (iOS), Kotlin (Android)
• Create responsive UIs that follow platform conventions (iOS HIG, Material Design)
• Integrate native device features: camera, push notifications, location, storage, biometrics
• Connect to backend APIs; implement offline mode, caching, and synchronization
• Add monetization features when needed: in-app purchases, ads, subscriptions
• Review and refactor AI-generated mobile code for correctness, performance, battery use, and maintainability
• Debug platform-specific issues and prepare/distribute builds (e.g., TestFlight, Play Console)

Requirements

• At least 3 years of relevant mobile app development experience (required)
• Degree in a related technical field (CS/Engineering/IT) is a plus
• Strong foundation in mobile development and platform-specific UI/UX patterns
• Ability to work independently and deliver production-ready apps
• Attention to detail and performance awareness

Nice-to-Haves

• Hands-on experience with at least one:
  • React Native
  • Flutter
  • Swift / SwiftUI (iOS)
  • Kotlin / Jetpack Compose (Android)
• Experience with:
  • Mobile navigation, state management
  • REST APIs and async data
  • Local storage
  • Native device APIs (notifications, camera, location, biometrics)
  • Build/distribution workflows, code signing, and App Store / Google Play submission
  • Monetization (in-app purchases/ads/subscriptions)
  • Backend services such as Firebase or Supabase
• English proficiency: B2 or above (required)

Workload & Compensation

• Estimated 10–20 hours/week during active project phases (not guaranteed)
• Compensation: up to $60/hour