[ceeplusplus]

Google has a big focus on technical excellence and complexity. Facebook is the one with the impact focused culture. You need to get your PRs approved by language experts at G, while at FB people frequently ship things that are terribly written and have few tests.

Anywhere where there are committees that decide who gets promoted are not impact focused.

[notacoward]

I have bad news for you, then: Facebook, which you laud as being impact driven, does exactly this. They call them "calibrations" but I've been in them and I can assure you that they're committees with all that implies.

[ceeplusplus]

Oh they certainly still do have some bureaucracy, but you will never see an L3 at Google being promoted to L5 in 1 year whereas that is a (very rare) possibility at FB.

[UncleMeat]

I specifically know a person who was double promoted from 3 to 5 in their second full cycle at Google. Just over one year.