The interview process was very informal and there was no formal coding test that I can recall. After a couple of phone interviews which were wide-ranging the general assumption was that coding questions were a waste of everyone's time. There was a single all-day interview on-site where I had four meetings with four different groups of people / individuals including my prospective team-mates, my prospective "partner" within the company, and the top product and technical people. Like most good interview processes, the conversations were very fluid and interesting. There were no "gotcha" questions or dumb programming tricks.

Exchanged some emails with a recruiter then talked with HR. After that they emailed me a coding challenge. Then another call with CTO. And after that on site interview for about 5 hours with 5 people.