Android Utility App Development

I'm in need of an experienced Android app developer who can build a utility app from scratch within a short timeframe. The app will need to have user authentication as a core feature.

Key Responsibilities:
- Design and develop a fully functional Android utility app
- Implement user authentication seamlessly
- Deliver a demo app quickly
- Ensure the app is bug-free and ready for testing

Ideal Skills:
- Proficient in Android app development
- Prior experience in developing utility apps
- Strong understanding of implementing user authentication
- Able to deliver under tight deadlines
- Excellent debugging skills