I have a fully deployed Flutter Application which has nodejs backend with sql in it with push notification integration of firebase. Everything is working properly, except for the integration between backend and frontend and also connecting firebase.

I am looking for a developer who can help me resolve the integration issues between the backend and frontend of my Flutter application. Additionally, I need assistance in resolving authentication issues with the firebase integration.

Ideal skills and experience for this project include:
- Strong knowledge of Flutter and Dart
- Experience with node.js backend and SQL databases
- Expertise in firebase integration, specifically with push notifications and authentication
- Ability to troubleshoot and resolve issues in a timely manner

I expect the turnaround time for resolving these issues to be within 1-3 days.