I received an email from the recruiter for a screen call and attended that. A week later, I received another email for a hiring manager interview. A week later, I received a third email from the recruiter for a third interview. I stopped there because they wanted me to do an unpaid assignment and then present it to the group.

4 Interviews with different levels of the organization, 4-6 hours total. Final meeting was with ownership, required an assignment and presentation of the assignment. Similar questions are asked during each interview.