Flutter Developer Needed to Add Authentication, Payment Integration & Publish Mobile

We are looking for an experienced Flutter developer to complete our existing mobile application. The app is already under development, and we need a developer to implement the remaining core features and prepare it for production release. Scope of Work Implement user authentication (Email/Password, Google Sign-In, or Phone Authentication using Firebase) Integrate secure payment methods (Stripe with Apple Pay and Google Pay support) Connect the app with Firebase backend Fix any remaining bugs and optimize performance Prepare Android and iOS release builds Publish the app on Google Play Store Publish the app on the Apple App Store Ensure the application meets store submission requirements Required Skills Flutter Dart Firebase Authentication Cloud Firestore Stripe Payment Integration Apple Pay Google Pay Google Play Console Apple Developer Account App Store Connect REST APIs Git