App Debugging & Play Store Deployment -- 2

I need a skilled developer to debug my Android app and prepare it for deployment on the Play Store.

Key Tasks:
- Align backend responses with front-end ViewModel.
- Verify and ensure the login-signup process works smoothly with email and phone number authentication.
- Ensure a seamless user flow and functionality of all features.

Required Skills:
- Proficiency in Android Java
- Strong experience with Node.js
- Expertise in ViewModel, Fragments, Adapters, API linking, and Data Binding

The entire code is already configured; your role is to finalize debugging and ensure a smooth app-store rollout.