Help me to connect my webapp to firebase

I am looking for a developer to help me connect my webapp to Firebase. The webapp is built in Next.js, so experience with this framework is ideal.

Specifically, I want to connect the webapp's database to Firebase.

I also want to implement Firebase Authentication for user authentication. So, experience with Firebase Authentication is necessary.

Key requirements:
- Strong proficiency in Next.js
- Experience with connecting databases to Firebase
- Familiarity with Firebase Authentication