Look at the left hand sidebar of the article with the author info. There's a Facebook and Twitter icon.
Thanks for clarifying. I don't think I've ever actually clicked one of those "social networking" icons so didn't realize that's where it was going. (I had grepped the text for the name instead).
There's a twitter icon underneath the author's name that links to that twitter profile...
The author's twitter is linked from their profile page on hackernoon.