Applied through their website, didn't hear back for about 3-4 weeks to where I received an email asking to set up for a initial phone interview. Had the phone interview, proceeded to next round of another phone interview with the positions direct manager. Was invited for an In person interview after that.

After passing a phone screen, I participated in an initial "case interview" which was just basic statistics using expectation functions (think econ 100 micro stuff, basic cost benefit). Then, I did a more rigorous case study using a sample situation without data or numbers that was mostly about how you thought through the problem. My example involved transit and involved thinking about how to diagnose a delay issue given some available data and information about the system. Finally, I moved on to two regular interviews with people I would be reporting to or working alongside, along with one final case interview with the department director that dealt more with data that I might have used in the role. There was also one other interview with a product manager. I found that one the most difficult, as I had to answer conceptual questions as opposed to just mathematical ones. The recruiter works with you throughout the whole process and is very helpful. I actually had to reschedule something at the last minute due to a sudden situation, and the recruiter was able to quickly help me reschedule my interview. Overall, it was a long process, but reasonable. Took probably 3 weeks from beginning to end, as I was contacted the day after I submitted my application. Only one interview, the one with the Product Manager, I found particularly difficult, as I think the "case interview" questions were fairly straightforward and involved simple math. With enough practice, one should be good with these (it's not like a consulting case interview, for example).