Groupon Senior IOS Engineer interview questions

The interview process was delightful. The recruiter took care of you all steps of the way. Everyone was friendly and helpful. Of all the companies I interviewed with, this is the only place where they don't ask data structure/algo just for the sake of it. All of the interview question was wrapped in real life case study, which makes it very interesting to solve. You still need to know your algo/ds though. The architecture question was pretty standard compared to other companies. The best part was debugging interview which I haven't encountered before. To solve this you really need to know how iOS works including UIKit, GCD, CoreAnimation, etc. I think other companies should definitely ask this question to gauge engineer's experience instead of another binary tree problem. Offer was actually really good, but I had other offer in different field. Definitely recommended.