We are seeking a Lead Cross-Platform Mobile App Developer to build, launch, and maintain Perfecti on iOS and Android. You will own the application lifecycle—from architecture and development through testing, store deployment, monetization, and ongoing optimization. The app will use Flutter, Firebase, and a freemium subscription model.
Responsibilities
Build and maintain one cross-platform application using Flutter and Dart.
Knowledge of Apple and Google billing policies and store-review requirements.
Proficiency with REST APIs, JSON, OAuth, webhooks, and third-party SDK integration.
Experience with Flutter state management such as Riverpod, BLoC, or Provider.
Understanding of clean architecture, dependency injection, responsive design, accessibility, and platform-specific behavior.
Familiarity with Swift and Kotlin for native integrations and troubleshooting.
Strong mobile security knowledge, including secure credential storage, API protection, authentication, authorization, and abuse prevention.
Experience with GitHub, pull requests, code reviews, automated testing, and CI/CD tools such as GitHub Actions or Codemagic.
Ability to test and debug across multiple iPhone, iPad, and Android devices and operating-system versions.
Understanding of privacy disclosures, account deletion, data retention, consent, and App Store privacy requirements.
Strong written communication, documentation, estimation, and independent problem-solving skills.
Candidates should provide links to live iOS and Android applications they personally helped build, explain their specific contributions, and describe their experience with Firebase and mobile subscriptions.
Pay: $30.00 per hour
Application Question(s):
Provide links to at least two Flutter applications you helped launch—one in the Apple App Store and one in Google Play. For each app, describe your responsibilities and which features you personally built.
Have you independently taken a Flutter application from requirements through production release on both iOS and Android? Describe the project, your role, timeline, and the most difficult issue you resolved.
Store Deployment: Describe your direct experience with App Store Connect, TestFlight, Google Play Console, signing certificates, provisioning profiles, release tracks, privacy disclosures, and store-review rejections. Provide an example of a submission problem you personally resolved.
Flutter Architecture: How would you structure a new production Flutter application for long-term scalability? Identify the architecture, state-management approach, testing strategy, and folder structure you would use and explain why.
Availability: What is your hourly rate, weekly availability, time zone, and earliest start date? Are you personally performing the work, or will any portion be assigned to another developer?
Firebase and Firestore: Describe a Flutter application in which you used Firebase Authentication, Cloud Firestore, Cloud Functions, Cloud Messaging, Analytics, and Crashlytics. How did you structure the data and control access?
Freemium Subscriptions: Describe your experience implementing freemium access, free trials, and recurring subscriptions on iOS and Android. Which tools did you use, and how did you handle receipt validation, entitlement synchronization, purchase restoration, cancellations, and subscription expiration?
