Groupon

I started with an on-campus screening that had a simple algorithm question. Then, I had a phone screening covering math modeling topics. From there, I interviewed back-to-back over Skype on technical questions like OOP and data structures. I received

One HR call - 30 minutes One phone screen - 45 minutes. Four onsite interviews - 1 hour each. A couple of interviewers had very little knowledge of computer science fundamentals and were expecting answers that were incorrect. Ill-structured interview

Phone interview: After several phone conversations with a recruiter, I spoke with a lead of an engineering team and talked in detail about my background and qualifications. This led to an on-site interview. On-site interview: It was a rigorous four-