In a related article linked at the bottom of the article's page, it says Meta confirmed it was a former data engineer:

https://torrentfreak.com/meta-confirms-data-engineer-is-behi...

I doubt executives even go through the typical employee interview hazing. It's more vibes and "do you know the right people or go to the right prestigious school?"

is "executive" a well defined term for american corporate law? like "a person who can allocate funds from the master bank account without approval" or something like that?