I had a total of 6 interviews. I applied in end of November 2017 and received an offer January 2018, my process was lengthened because of the holidays.
1. Phone Screen (30 minutes) - Typical interview mostly resume review type questions to determine basic fit for the position and if I met the basic job criteria.
2. Phone Interview (30 minutes) - This interview was with an Associate Director on the team I would be working with, again many of the questions were geared towards my resume and background nothing too technical or complicated, no case interview.
3. In Office Interviews (3-4 hours). I had back to back 1 hour interviews with Associate Directors on my team. Each interviewer had a different style, the first was more conversational and didn't last the full hour, the manager just wanted to see if I'd fit in with the culture. The second was more by the book interview style, asking mostly resume review and background experience questions. The third was a combination of the first two, make sure to emphasize attributes of the job description that you possess and focus on that.
4. Final Phone Interview (15 Minutes) - Quick telephone call with the director of my team just to get to know me. More tell me about yourself than anything technical especially because I did well on the previous rounds.