C#.NET Developer for Windows Desktop App -- 2

I'm seeking an intermediate C#.NET developer to help create a new Windows desktop application. The project is expected to last around 20 days initially, with the possibility of extension after our preliminary discussions.

Ideal Skills:
- Proficient in C#.NET, with a solid understanding of intermediate concepts
- Experience in developing Windows desktop applications
- Excellent problem-solving skills

Please note, the person can be hired either online or offline.