C# Desktop app developer

I am looking for a skilled C# desktop app developer who can create an application with the following requirements:

Specific Features:
- API integration
- Database integration
- File management
- User authentication

User Interface:
- I am open to suggestions for the design of the user interface.

Operating System:
- The application should work specifically on Windows.

Ideal Skills and Experience:
- Proficiency in C# development
- Experience with API integration
- Knowledge of database integration and file management
- Familiarity with user authentication
- Ability to create a user-friendly and visually appealing interface

If you have the necessary skills and experience, please bid on this project.