[noptd]

Not sure why this is downvoted. Considering the parent led with

>I've hired hundreds of developers over three decades, and this is completely wrong

in order to argue from a position of authoritative experience, these questions are entirely fair game.

[mixmastamyk]

Because it's self-evident that designing a quick-ramp up process and modular system/good docs makes this a lot easier. It's 2022, you should be able to review checkins on gitlab the first week with a couple of basic tickets.

If folks are too green for that then they can be put thru an internship first. If an obscure language, have them do checkins on a tutorial.