Had two phone interview rounds followed by an onsite. The first phone interview was with the director of engineering. She was incredibly friendly and asked me some basic questions and one algorithm question. Second phone interview was with a lead engineer. It was much like the first interview except his questions had a lot more to do with multithreading and the sort. I didn't know much about it, but I was able to reason through the correct answers. My onsite was with 5 different interviewers. All the interviewers were very friendly and gave me a good idea about the personalities and the work culture at Glassdoor. Onsite interview questions were all varied, only one of them was something you could know from reading books like Cracking the Coding Interview, the rest were about my personality/drive to be in CS and problems where I had to design a solution. The interview was incredibly enjoyable for me not only because of the people, but because of the questions. For each stage, I felt like I was having a conversation and not being quizzed.