Did you check out the "about" section and the timeline of his career on the main page of the linked blog?

https://www.voxagon.se/

Because it looks like your opponent is a Swedish former demoscener who started programming at age 12 on the C64 and Amiga computers in 1990, quickly moving on to writing games and demos in assembly, then professionally developing physics engines since 2001, specializing in game performance profiling and squeezing performance out of optimized mobile games.

As far as game dev stereotypes go you basically picked a Final Boss fight. Good luck, you'll need it :p