I've been a commercial software engineer since 2002, but have been coding since 1993. In that time I've touched upon many different languages (BASIC / C / C++ in the early days and Java at Uni and for the first 1.5 years of first full time job), but since about 2002 have pretty much just been doing mainly C#, JavaScript, HTML/CSS, and Powershell.
More recently I've started taking an interest in Python, Scala, and R just to give myself a bit more of a mental workout and to get myself back into the less MS side of the world.
My biggest endeavour over the last 8 years was to build my software and business consultancy, Seven Sigma Business Solutions. During that time I architected and wrote most of the Glyma Knowledge Management product that we released as open source in 2015. (For more information on Glyma, get it at my Github account at https://github.com/chris-tomich/glyma)