Freelance Mobile App Developer (iOS / Android)

Role Overview

Mindrift is looking for a Freelance Mobile App Developer to join the Tendem project and build native and cross-platform mobile applications for real-world use cases. This is a part-time remote freelance role focused on shipping stable, performant, and user-friendly iOS and/or Android apps.

Responsibilities

• Design, build, and refine mobile applications for categories such as utilities, fitness/wellness, games, productivity, delivery, and content
• Build apps using React Native, Flutter, Swift (iOS), or 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; handle offline state, caching, and synchronization
• Implement monetization when required: in-app purchases, ads, subscriptions
• Debug, optimize, and refactor for correctness, performance, battery efficiency, and maintainability
• Resolve 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
• Ability to integrate platform APIs and work through the full mobile development lifecycle
• Strong attention to detail and performance/stability mindset
• Portfolio of shipped mobile apps (required; App Store / Google Play links preferred)
• English proficiency at B2 or above

Nice to Have

• Degree in Computer Science/Engineering/IT (BS/MS preferred)
• Experience with REST APIs, async data handling, and local storage
• Familiarity with device APIs (notifications, camera, location, storage, biometrics)
• Experience with mobile build tools, code signing, and App Store / Google Play submissions
• Monetization implementation experience (in-app purchases, ads, subscriptions)
• Backend familiarity with Firebase, Supabase, or similar

Workload & Compensation

• Estimated 10–20 hours/week during active project phases (not guaranteed)
• Compensation: up to $60/hour equivalent depending on level and pace of contribution

Location

• Remote / Part-time (listed location: New York, United States).