Been working since .net 1.0 came into market. Got those MCAD.net and MCTS certificates.
Worked on web/windows apps and windows services, threading, COM interop, application migration from legacy systems to .net, SQL server , web services, wcf, Object oriented analysis and application design and architecture, database design, and all other stuff which happens in life of core developer.
Currently working as software engineer in a big and well known company in london.