C# Console App Development

I am in need of a skilled .net C# developer to construct a console app. The core tasks involve:

- Developing a console application using .NET and C#
- Implementing both data processing and file manipulation functionality into the console app

Specifically, the data processing should revolve around data aggregation.

Ideal freelancer candidates should:

- Possess significant experience in .net C# development
- Have a proven track record of working on console apps
- Show a deep understanding of data aggregation techniques in data processing

Knowledge and experience in working with file manipulation is also a must.