20 min introduction phone call with recruiter. 45 minute Technical Phone Screen - The question was easy. I answered the question very very and my algorithm was optimal. I also gave a complex approach which was more appropriate for a larger scale system. My code did have some bugs which I fixed after the debugging. These were python syntax related bugs and not logic related - but I think this was the reason for my rejection. I still do not know if that was the reason for rejection though, because the recruiter never replied with a feedback. They communicate very nicely with you when you are going through the process but just stop replying once they have rejected you. Most major companies I have interviewed with provide a feedback and are polite with their rejections. Sadly, Yelp is not one of them. I wouldn't day my experience was bad, but it could have been better.