Snap Android Software Engineer interview questions

I was referred by a friend who was in the interview process. Had a quick chat with the hiring manager and then scheduled the phone screen. The phone screen was an hour long and focused on fundamental data structure and algorithm understanding. Two hours after the phone screen, I was invited to come on site. The on site interview was pretty standard - 4, one-hour long interviews that covered overall system design, Android specific topics, and general data structures/algorithms. I hadn't been feeling well that day and by the end of the day was dragging pretty bad; my final interview was pretty rough but that was nobody's fault. The only complaint I have is that finding the lobby could certainly be easier. It's tucked back in a group of unmarked bungalows; maybe if they could have someone standing out on the street or on the boardwalk to meet you it'd make that a bit easier.

Phone screen was fine and standard interview with codepad problem. But on site was awkward as you had to solve non-standard coding problems in less than 30 min and make all unit tests pass. The interviewers were not helpful.