I'm a fulltime .Net developer, mainly focussing on Windows Desktop development using WinForms and WPF. In most solutions I use WCF for access to the businesslayer. For other projects I also use Asp.Net MVC and windows services.
Apart from that I'm a big fan of using dependency injection. Simple Injector is my DI container of choice because it guides me into using the SOLID principles.
In my spare time I try to help users here on SO in using SOLID principles especially when they find themselves hitting the wall with Simple Injector.