This was very early on in the company, so it most likely won't help anyone at this point. Submitted my portfolio on one of the many design-related job boards. Received a phone call from the CTO (one of two full time employees at the time) a few hours later. We chatted and it went well. Got on the call with the other cofounder / CEO a few days later. Flew down the following weekend and met them on a Monday morning. It was a very nice visit, really liked everyone I spoke with (CEO, CTO, Director of Engineering, CFO, interns), had lunch and was given a ride back to the airport. By the time I got off the plane, the offer was in my inbox.

Complex and lengthy interview. Many different sessions including HR, designers, and other future teammates, which was helpful in getting a feel for the team, company, and what's expected in the role.