1. My name is Deyan (hi!)
2. ar5iv was the latest frontend incarnation, but our actual work on converting LaTeX to HTML goes back nearly 20 years behind the scenes.
3. I was an undergraduate student when I was introduced to the project back in 2007. It was started "in spirit" by 3 senior co-conspirators back then: Michael Kohlhase, Bruce Miller and Robert Miner. And I am by no means a solitary actor today, even if I may be the chief online presence of the people involved. Bruce is doing the bulk of the hard work on LaTeXML to this day.
I documented some of the history in an invited talk for CICM 2022, which you can find on youtube, or see the slides at:
https://prodg.org/talks/welcome_to_ar5iv
It's really great that the HTML has now reached "home base" in arXiv, and I hope their team gets a lot more of the positive attention going forward - today's achievement is entirely theirs!