It was very relaxing and everyone was friendly. 3 parts: Short introduction small talk and quick resume walk through, longer traditional interview that was more conversational, and a 90 minute coding exercise where you try to build a working program.

1st long interview was fun but he asked me some questions about my internship that I didn't quite remember. Coding exercise wasn't too hard but I was expecting more feedback as they said it would be collaborative. Try to make your code work before optimizing, which made me run out of time.

The coding exercise had basic probability but I did not expect that.