I got this job 10 years ago. It was around the dot com bubble. Interview was simple. Different people covered different topics from CMOS design, combinational logic, Verilog, board design, instruments, puzzles, etc. But the process still seemed ad-hoc at that time since it was a small company. The questions were not complicated. I have had other harder interviews.

I found it very simple. It is so hard to tell. It is nothing that a college grad would not know. But one question was what happens to the ground when a lot of lines suddenly draw current.