Looking for expert in C# GUI program

I am looking for an expert in C# to develop a GUI program with the following requirements:

Specific features:
- File management
- Data visualization
- User authentication

Design and layout:
- No specific design or layout in mind
- Trust the freelancer's design expertise

Timeline:
- Need the GUI program to be completed within 24 hours

Ideal skills and experience:
- Proficient in C# programming
- Experience in developing GUI programs with file management, data visualization, and user authentication features
- Strong design skills and ability to create visually appealing interfaces

Please provide examples of previous C# GUI projects you have worked on.