Initial contact was a call from a recruit. Extremely friendly, and informative. Provided a clear description, and was inquiring about my compensation range, desire and ability to relocate, etc. This was done over the phone. This recruiter acted as my guide throughout the process, which was immensely helpful. She would stay in contact via phone to chat before each part of the process, and provide me with advice.
Second part was the behavioral interview, conducted by the hiring manager. Again, super friendly and informative. They were mostly interested in better understanding my research background, and asked some basic methodological questions about my research, as well as other normal questions you may get during an interview.
I then advanced to the final round. This was an in-person interview that consisted of three parts. The first was a business case exercise, the second was an intellectual curiosity exercise, and the third was a writing sample. You had an hour for each. The first two are designed to better understand your process - how you frame a research question, conceive of the variables, how you would operationalize and measure the variables. They are really concerned with your ability to formulate, and more importantly, organize your ideas quickly. To be honest, there wasn't much of a difference between the business case and the intellectual curiosity exercise. Finally, for the writing test, they asked you to create a 250-350 word blog post summarizing a business article. They provide you with guidance on this via email before the interview.