I develop software in the medical field, all the way from business logic, GUI and databases to device communication via firmware interfaces. C#/.NET via VisualStudio is my daily bread and butter, continuous integration and test aided development is what keeps me sane. That, and git. Also, communication (yes, as in "talk to other people") is at least as essential as hacking skill.
My prime interests are git, clean code and software architecture. I would like to know more about IT security and penetration testing, but lack the time to get into it.