Freelance Mobile App Developer (iOS / Android)

Mindrift·Remote(Japan)

Software Development

WFA Digital Insight

As demand for skilled mobile app developers continues to surge, with a notable 25% increase in job postings over the past year, Mindrift's freelance opportunity stands out. With the rise of AI-assisted development, professionals with expertise in both native and cross-platform frameworks are in high demand. This role is particularly interesting for those looking to leverage their skills in a dynamic, remote environment, working on diverse projects that integrate AI and human expertise. Candidates should be prepared to showcase their mobile app development portfolio and highlight their experience with platform-specific UI/UX patterns and backend services integration.

Job Description

About the Role

The Freelance Mobile App Developer position at Mindrift is a unique opportunity to contribute to the Tendem project, a hybrid environment that combines AI and human expertise to build innovative mobile applications. As a key member of this project, you will collaborate with Tendem Agents to develop, refine, and ensure the stability and performance of mobile apps across various categories. This role matters because it requires a blend of technical expertise, attention to detail, and the ability to work independently in a remote setting.

Day-to-day, you will be engaged in designing, building, and refining mobile applications for both iOS and Android platforms, using your expertise in React Native, Flutter, Swift, or Kotlin. The role entails working closely with the Tendem team to integrate AI-generated code, implement responsive UIs, and connect apps to backend APIs, ensuring seamless user experiences.

The Tendem project is part of Mindrift's mission to unlock the potential of Generative AI by leveraging real-world expertise. This mission is timely, given the current landscape of digital innovation, where the demand for high-quality, user-centric mobile applications is on the rise.

What You Will Do

Design, build, and refine mobile applications across categories such as utilities, fitness/wellness, games, productivity, delivery, and content apps for iOS, Android, or both.
Implement responsive mobile UIs that follow platform conventions, including iOS HIG and Material Design.
Integrate native device features such as camera, push notifications, location, storage, and biometrics into apps.
Connect apps to backend APIs, handling offline state, caching, and synchronization.
Implement monetization features where required, including in-app purchases, ads, and 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 via TestFlight and Play Console.
Collaborate with Tendem Agents to ensure the quality and stability of mobile applications.
Participate in the full mobile development lifecycle, from concept to delivery.

What We Are Looking For

At least 3 years of relevant experience in mobile app development, with a strong foundation in mobile application development principles.
Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields.
Hands-on experience with at least one of the following: 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, including notifications, camera, location, storage, and biometrics.
Experience with mobile build tools, code signing, and submission to the App Store and 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, with App Store and Google Play links preferred.
English proficiency: Upper-intermediate (B2) or above.

Nice to Have

Experience implementing in-app purchases, ads, or subscriptions.
Familiarity with backend services such as Firebase, Supabase, or similar.
Knowledge of AI and machine learning concepts and their application in mobile app development.
Experience with agile development methodologies and version control systems like Git.

Benefits and Perks

Flexible, remote work arrangement with the opportunity to work on diverse and challenging projects.
Collaborative environment with a team of skilled professionals.
Opportunities for professional growth and skill development in the field of mobile app development and AI.
Access to the latest tools and technologies in mobile app development.
Competitive compensation package.
Health and wellness programs tailored for remote workers.
Annual or bi-annual team meetups in exciting locations.
Dedicated support for continuous learning and professional development.

How to Stand Out

Tip: Ensure your portfolio showcases a variety of mobile apps you've developed, highlighting your expertise in both native and cross-platform development.
To stand out, emphasize your experience with AI-generated code and how you've successfully integrated it into your projects.
Familiarize yourself with Mindrift's Tendem project and be prepared to discuss how your skills align with the project's goals.
During interviews, be ready to walk through your development process, from design to deployment, and highlight your problem-solving skills.
When discussing compensation, consider the value of your freelance work and the flexibility of remote arrangements, and be prepared to negotiate based on your experience and the market rate.
Be mindful of the company culture and expectations around remote work, ensuring you're comfortable with the level of autonomy and self-directed work required.

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