I applied online and they got back like a month later asking to setup time for a screen. The first recruiter took a week to respond to my availability, then passed me to another tech recruiter, who took another week (and canceled a few screens in between) Finally I just said I didn't want them to waste any more of my time after the 2nd recruiter tried to pass me to another recruiter to setup time. Total waste of time.

All of the interviewers were respectful, intelligent, and genuinely interested in hearing your ideas on how to solve the problem. They assessed a variety of different skills, data structures and algorithms, iOS coding skills, Systems' design, and culture fit. They made a very generous offer.