Got contacted on LinkedIn by a recruiter. After a brief phone screening, I was asked to complete a take-home assignment in about a week. Although, later they decided to skip that with me so I can't say how it was. I was invited to an on-site interview that was all day. There were like 5 different interviews. One that was pretty general, my lunch was a general interview, and then I had three coding interviews. For all three, I was given a puzzle to solve on the white board first and then I had to code the solution and get it working by the end of the session. It was awkward because the interviewer looked over my shoulder the whole time. That probably made it the most difficult.

Can't really remember the puzzles. I think one of them involved a card game. They were involved enough to code a solution to and a little stressful to code with their eyes on you all the time.