Informal. Two phone calls with their only HR employee and one informal, in-person interview with the CEO. Met after hours with the CEO at their offices and had a discussion with him - it was really just more like a conversation to see what kind of person I am. I later learned that they specifically screen for people who they find "cool" rather than the most skilled applicants.

The interview process was straightforward. Met with hiring manager, followed by an interview with owner and production manager. After that I met with a team member where we discussed my portfolio and experience.