Snap, makers of SnapChat, just laid off "over 120" engineers... which is a lot of people. But it represents just 10% of their developers, somehow. And their company has > 3,000 employees total.
https://www.theverge.com/2018/3/8/17096844/snap-layoffs-over-120-engineers-confirmed-snapchat
How does that one chat app have so many engineers?!? *boggles*