Every member of the team is in on the interview process. At random they will decide whether to interview you en masse, or as hodgepodge segments of the team for no reason. There is no guiding force to the interview questions. Some people google a random coding question, other people google a random technical question, then, with no guiding force to the conversation will randomly interject their pointlessly selected question to sate their personal curiosity. I was told by one of the more senior devs that he chose coding questions specifically based on the fact that he couldn't solve them.
In other words it's a schizophrenic experience. And their decision is based entirely on what they felt from the interviewee. If you say you like microbrewery beer, and that you like fitness activities, you're pretty well bound to get the offer since nobody here knows how to conduct a real interview.
All of this is hindsight from having participated in this random process for hiring several times after being hired.