I am Έφη Μουζέλη, I am Greek, and I joined the Wikimedia Foundation a few years ago. I very rarely write articles or tweet, but sometimes I speak at conferences; check out my talks and drop me a line if you find something interesting!
I am a Site Reliability Engineer in the Service Operations Team, taking care of MediaWiki and friends.
Disclaimer: I work for or provide services to the Wikimedia Foundation, and this is the account I try to use for edits or statements I make in that role. However, the Foundation does not vet all my activity, so edits, statements, or other contributions made by this account may not reflect the views of the Foundation.