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Mindrift

Apply → Pass qualification(s) → Join a project → Complete tasks → Get paid. Project time expectations: Tasks are estimated to require around 10–20 hours per week during active phases, based on project requirements; This is an estimate, not a guaranteed workload, and applies only while the project is active. Note: Rates vary based on expertise, skills assessment, location, project needs, and other factors. Higher rates may be offered to highly specialized experts. Lower rates may apply during onboarding or non-core project phases. Payment details are shared per project.

Freelance Mobile App Developer

Location

Worldwide

Posted

9 days ago

Salary

$60 / hour

Seniority

Mid Level

Job Description

Freelance Mobile App Developer

Mindrift

Role Description Mindrift is looking for skilled Mobile App Developers (React Native, Flutter, Swift, or Kotlin) to join the Tendem project (https://tendem.ai/) and build native and cross-platform mobile applications within our hybrid AI + human environment. In this role, as an AI Pilot – that's how we refer to this position at Mindrift – you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide mobile engineering expertise, platform-specific judgment, and quality control to ensure apps are stable, performant, and ready for real users on real devices. This part-time remote opportunity is ideal for professionals with hands-on experience shipping iOS and/or Android apps, working with platform APIs, and handling the full mobile development lifecycle. Key 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). - Evaluate AI-generated mobile code and refactor it for correctness, performance, battery use, and maintainability. - Debug platform-specific issues and prepare builds for distribution (TestFlight, Play Console). Qualifications - At least 3 years of relevant experience in mobile app development (required). - Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus. - 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). Project Time Expectations - Tasks are estimated to require around 10–20 hours per week during active phases, based on project requirements. - This is an estimate, not a guaranteed workload, and applies only while the project is active. Compensation - Contributors can earn up to $60 per hour equivalent, depending on their level and pace of contribution. - Compensation varies across projects depending on scope, complexity, and required expertise. - Other projects on the platform may offer different earning levels based on their requirements. Benefits - Work fully remote on your own schedule with just a laptop and stable internet connection. - Gain hands-on experience in a unique hybrid environment where human expertise and AI agents collaborate seamlessly. - Participate in performance-based bonus programs that reward high-quality work and consistent delivery.

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Lead Kotlin Multiplatform Developer

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Romania
Full TimeRemoteTeam 5,001-10,000Since 1995H1B No Sponsor

• Develop and maintain Android app features using Kotlin and provide support for iOS development using Swift 5.x. • Contribute to the evolution of the app architecture based on Clean Architecture. • Work in a modularized application environment to ensure code organization, reusability, and scalability. • Build user interfaces using Jetpack Compose. • Implement and maintain dependency injection with Hilt. • Write and maintain unit tests to ensure code quality and reliability. • Collaborate with product, design, and backend teams to define and deliver new features. • Participate in code reviews and contribute development best practices. • Drive continuous improvements in the app’s performance, quality, and architecture.

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We are an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity or national origin, disability status, protected veteran status, marital status, familial status or any other characteristic protected by law. Preference will be given to Ouzinkie Shareholders, Descendants of Shareholders and Spouses of Shareholders in accordance with Title 43 U.S. Code 1626(g) and Title 42 U.S. Code 2000e - 2(i).

United States
$59 - $64 / hour