There was a phone screen and then an on site interview. The hiring managers were really friendly and the interview was about 30 min long. I walked into the office and they gave me a tour of the office, and I instantly fell in love with the view from the windows - SF sky line (kind of). I waited for a little bit and then they walked me to one of the conference rooms and just started talking. They sent me the offer letter just 30 minutes after meeting me. It was a very smooth process.