They had 181 people working on all oft their games. Remember when you hate on cs2 its probably like 20 people trying to keep the ship floating.
The flat structure with no bosses of Valve is widely known, but I'm wondering how far it stretches and how many employees Valve actually has?
I assume, that there is some kind of accounting department or legal department that follows the traditional business system instead of the flat structure. Or does Valve outsource that stuff?
What other stuff do they outsource (support I assume), art? programming?
Wikipedia has it as ~360 circa 2016
Not sure about the other stuff.
There are some really good Tyler McVicker videos about Valve as a company and how it's structured. Certainly won't answer every question you have but can definitely give you a better idea of what their 'flat structure' really looks like. In essence, leadership at valve is more like a popularity contest, and senior members of the staff (for better or worse) hold more swinging power than their junior counterparts.