Versatile Android App Development

I'm seeking an experienced Android app developer to create an app with user authentication and push notifications.

Key Requirements:
- User authentication: Secure login and user management.
- Push notifications: Timely updates and alerts for users.

Ideal Skills and Experience:
- Proficient in Android development (Java/Kotlin).
- Experience with Firebase or similar for push notifications.
- Strong background in implementing secure authentication protocols.

Please provide examples of your previous work in similar projects.