That takes months or years if it's possible at all (at least in many places). For any place where you can neither fire bad devs nor find very good ones to repla

That takes months or years if it's possible at all (at least in many places). For any place where you can neither fire bad devs nor find very good ones to replace them with, the trick is to make good processes and products using mediocre people. And that's hard. But that's also why a lot of processes appear, that would seem unnecessary to someone who is a good engineer and used to working only with good engineers.