I was approached by the recruiter. The recruiter hooked me up with the CTO. Had a 30min phone call with the CTO about earlier projects. The recruiter handed me off to the HR. An onsite interview scheduled in couple of days. The onsite was in SF and the duration was about 6 hours. Met with people from different teams (server, client etc) The interview question consisted of trees, linked lists, data structures, code optimization. There was a text file manipulation coding problem where i had to code on a machine using my preferred language. I was left alone and was given about an hour and a half to finish it.