It was a walk in introduction interview at a national convention for a student organization I was in. I had to wait in line and then talked to them at their booth during the career fair interview process. The process was easy and when it was your turn to speak you would discuss potential fields im interested in.

There was one interview. We discussed my background from active cell balancing research to PCB design to my teaching and other research. I was offered the job after a couple of hours.