If you want to hire Dot NET developers, you need to test their expertise. As a rule, Dot NET developers need to have experience with the Visual Studio family. Visual Studio is an integrated development environment by Microsoft. It is useful because of the lots of extensions and integrations available. To integrate different APIs into the solution, your .NET development team needs to possess the knowledge of Roslyn. Also, .NET programmers need to be acquainted with ASP.NET. It’s a .NET framework for using code multiply and keeping it clear.