How to Onboard a New Dev Without Overwhelming Them

A new developer doesn't need the entire architecture explained on their first morning. They need to get the project running, know who to ask and have a manageable first task.

I try to introduce context alongside the work that needs it. A short map of the system is helpful; a tour of every historical decision is harder to retain. I also want to check the setup instructions before handing them over, while there's time to fix the missing steps.