First a coding challenge which was not too hard. Then there was a final super day that lasted four hours with no breaks. People were nice in general, but I did find it weird that they were trying to gauge how willing you were to work late hours right in the interview. After saying they would follow up in a week, they didn't. I emailed two weeks after, and they sent me a templated rejection and nothing else. This rubbed me the wrong way after having spent so many hours interviewing only to not even get a handwritten rejection.