I am a musician and an English Language teacher, originally from the UK, but often elsewhere. I've also been a music/instrument teacher, although I'm not doing that right now (except on here, for fun of course!), and informally with friends/family and other musicians as we exchange ideas and talk about music.
I know a bit of coding, and did some system administration for a while. It's not something I do right now professionally, but I occasionally tinker just for fun.
I've been using music.stackexchange.com for a while, and I genuinely think it's one of the best music theory communities on the internet. It's a less obvious candidate for the stackexchange format since music theory is a mix of coolheaded descriptive analysis and subjective experience and opinion, sometimes with a bit of "hard" science sprinkled in. However, the community really does well to make it work, and even though I don't agree with 100% of the policies and decisions, the mods by and large do a great job.