I develop web UI in MVC. I support the systems that communicate with the customer facing website. My previous experience ranges from MFC to WPF, C++ to .NET.
My specialty is working with platforms that focus on separation of UI and data. Before having worked in platforms that cater to this style, I had already developed code for the MFC platform that achieved the fluidity of winforms and wpf (albeit with more overhead) mimicking flow layout and measure and layout patterns.
My second specialty is with reflection. Creating a custom proprietary screen designer with many of the features of visual studio, creating a custom framwork that handles serialized data as commands which access existing methods and properties on C# objects so relatively zero hard-coded API was necessary, creating dynamic methods with il.emit when necessary to increase efficiency.
I see myself as above proficient with C# itself, and proficient extending into .NET as a whole, with some mastery of C++.