There was a preliminary phone screen followed by a technical screen. Each was took the time to have a nice conversation, asking questions about me and describing the company.

Phone call for screening purposes followed by onsite interviews. Spoke with 2 Architect's and 1 management person from Boston using laggy / patchy video conference. The 2 Architects engaged in a conversation about using version strings etc in REST URL's, and OAuth 2. Surprisingly they had not heard of CARP, CAP, or of the 'OAuth 2.0 road to hell' so as one might expect these conversations were a lost cause. Other companies I interviewed with were all over this and understood it, possibly because they had been though a scale crises at least once. San Francisco people were very nice, appeared confident, and competent. I got no really technical questions so cannot speak to how a deep technical / coding interview would go there. Their priority seems to be finding very real people that can stick through what ever it is they expect will happen. They come across as people you could really trust in a tight spot.