Lengthy. I suggest taking the day off if you have a job while interviewing. Multiple rounds with different departments. There was a case study to complete as homework and then one of the last interviews they went over responses and thought processes.

The interview process was pretty smooth and quick. Within a week I had completed the 3 interviews, with the last including an example case study. The first phone screen and interview was a more general interview and the last was more focused on the actual role/industry.