The application called for a cover letter, references, and a research sample. HR was in touch a few weeks later to say that my materials had been sent out to researchers for review. A month later I was invited for a phone screening interview with the head of the department. I was invited for an on site interview, which took place a month later. On the day of the interview, I had ~8 30-minute 1-on-1 interviews with researchers, a conversation with an HR rep, and gave an hour-long research presentation.