IT phone screen, hiring manager phone screen, then onsite interviews for a half day. Also had a challenge assignment that took about 2-3 hours to write consisting of 3 functional/technical questions that outlined a scenario that I had to resolve.

At first, there was an HR interview, then a phone interview with hiring manager followed by in person with hiring manager and others. Tour of the office was great. Nice space but lots of people - they might have to move soon. Growing very rapidly. Tight security measures, probably due to the nature of their field