It sounds like OP was talking about the same process, although they skipped mentioning bootcamp and only mentioned team selection. They also accounted for specialist pre-allocated roles. My FB experience was different than many because I was hired to a specific team. I was also the first member of that team to go through bootcamp. It was a weird exception because many of the team members came from the Oculus acquisition, and at the time Oculus had somewhat separate culture. Afaik AR/VR still hires for specific teams and roles externally, although roles in that org are also regularly filled by bootcamp grads with the right experience and/or interests