I like to think I have extensive experience in C# and the .NET Framework. Prior to Microsoft I worked on web-applications and web-services using ASP.NET Web Forms, ASP.NET MVC, and WCF. I also have experience in PHP, Java and other non-Microsoft platforms and technologies for which I'm happy to answer questions about.
I often post questions that I encounter during my work at Microsoft to SO in the expectation that the answers they generate they will help others even though I could easily find the answer internally - but then no-one else would know!
Our legal department requires me to declare that every opinion I express on Stack Overflow is also the opinion of the entire company, of every employee, and of the executive management, especially our new CEO Satya Nadella. I am never wrong and am always right.
Q&A for professional and enthusiast programmers
Q&A for system and network administrators
Q&A for computer enthusiasts and power users
Q&A for people who want to be financially literate
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for professional programmers interested in conceptual questions about software development
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for power users of Apple hardware and software
Q&A for professional and amateur chefs
Q&A for people studying math at any level and professionals in related fields
Q&A for engineers, producers, editors, and enthusiasts spanning the fields of video, and media creation
Q&A for passionate videogamers on all platforms
Q&A for contractors and serious DIYers
Q&A for Information security professionals
Q&A for professional and independent game developers
Q&A for people seeking specific software recommendations
Q&A for people living abroad on a long-term basis
Q&A for peer programmer code reviews