Very similar to what others have mentioned.
-first call with recruiter, mainly going over your resume and having them explain the process. Afterwards he sent over prep material for the phone interviews and onsite interview. The material is really comprehensive and probably somewhat overkill, but if you review it all you will be prepared. The recruiter really really wants you to feel prepared as well, so use them as a resource! That was what stood out the most to me in the process, more than anywhere else they want you to feel ready.
-phone interview with shared screen coding with a data scientist. Basic sql, coding, and stats questions.
-another phone interview, very similar to the first.
-on site interview with a mix of open ended data science problems, coding questions, sql questions, behavioral questions
-follow up phone interview with only one subject that they felt they didn't ask enough about at the onsite