Resume submitted at campus career fair. Followed up with the manager and waited for about one month. They then invited me for an on-site interview.

It was a one-day interview, meeting with nine people from the same group or related to this position. Most of them were not that difficult.

Typical questions were about my resume and how I would test the PCB board, generally and specifically. One manager took me to lunch and asked some behavioral questions. I think I messed one up.

The manager with a European accent was difficult for me to understand. The questions were very technical, covering both Mechanical and Electrical aspects. Since it had been a while since I touched upon EE knowledge, I missed some basic questions. That is, I think, the biggest reason I was rejected.

How high you could absorb the beer from one bottle through a straw (the way he said "straw" was more like "strew," which took me some time to understand)?

Some frequency signal filter questions.