My on-site interview had 5 rounds. The questions were quite simple.

I went in expecting to be grilled on a lot of theoretical computer science, but the questions were of a very practical nature.

All the interviewers were extremely nice and helpful, giving hints when I got stuck.

Overall, a very positive experience even though I didn't get hired.

A lot of whiteboard coding. I found the algorithm and data structures questions quite easy. I did badly in one of the coding rounds, mostly because I was not used to somebody looking over when I was writing code. Being conscious of it made me make some very silly mistakes.