Don't wait until people do something wrong to talk to them. Positive reinforcement goes a long way.
All the initial interviews are done by what seems to be call center people. Then they play the interview recording to hiring managers. Very impersonal, but also pretty easy if you have a brain.
The culture leaves a lot to be desired. You work on your own all the time, when you are spoken to its usually about what you need to do better, or what you did wrong.
The good technicians are great but there are a lot who take no pride in their work. As a result if you do take pride in your work you have to clean up a lot of other technicians shotty work.
The supervisors are fine. But any upper management is so performance focused that they don't do any real performance driving coaching or tactics. No ride alongs, no calls to check how you're doing. I was a top performing new hire and still heard nothing from my direct supervisor.
It is piece work so you get paid only for what you complete. So the incentive is to complete the work fast, not properly. Then when something is not not properly you take full blame, even if it was the person before you who did it. They preach safety then put you in a position to do it unsafe.