It was a phone interview and the HR person didn't attend it for a personal reason. They asked a lot about my past personal project. (Things like how is this part working, etc) They also made a very comfortable interview atmosphere. I prepared quite a bit on this interview, but ended up not saying much what I was going to say.

The interview was more difficult than expected for a co-op role. Questions spanned multiple unrelated domains, with sudden shifts between topics such as embedded systems and web development. This approach felt somewhat unstructured and made it harder to understand what the team was actually prioritizing in candidates. Requirements to the questions were unclear.