Mobile App Compatibility Fix for Android & iOS

I need a skilled mobile app developer to troubleshoot and update code for my app, which is experiencing compatibility errors with the latest Android and iOS versions. The issues are primarily with user interface elements, data synchronization, and push notifications on Android.

Ideal skills and experience for the job:
- Proficient in mobile app development for both Android and iOS
- Strong understanding of troubleshooting and code updating
- Experience with user interface, data synchronization and push notifications
- Knowledge of the latest Android and iOS version requirements