I'm not aware of how many other companies have a "bootcamp" program like we have at Facebook.
Basically all software engineers (including some whose titles aren't Software Engineer, and including managers) go through this six week process - first four weeks is mostly getting people up to speed through two or so presentations a week and doing real tasks (which may mean meeting up with some other engineers to understand enough context on how to proceed) that go through the same review and push process as everyone else, and the last two weeks is mostly learning about specific teams and a bit of a sell exercise through a set of presentations.
All through this, you share a software engineer mentor with two other bootcampers who helps you navigate the code repos and also the company.
At the end, the bootcamper decides what team to work on, with some background information like company priorities and maybe with some teams specifically reaching out to them.
That's a fairly huge investment, so I'd love to know which other companies offer this sort of program.