There is no interview process. You just get selected, and have to pass a process for your background and fingerprints. After that you do a shadow day, to decided if thats a job you want to do.
I applied in-person. I interviewed at US Postal Service (Greenville, NC) in Feb 2022
Interview
basic question takes a while for the interview but once you get the ok the ball starts rolling pretty fast. Then you may have to do some traveling for a couple of weeks for training
I applied online. The process took 3 weeks. I interviewed at US Postal Service (Culpeper, VA) in Jan 2019
Interview
I applied during the fast track time - No interview just passed drug & background test very easy, not sure if they’re still fast tracking at the moment. We also did a fingerprint too.