Zillow Software Development Engineer interview questions

I was asked to solve a problem in java and submit the code to them, then I guess they were impressed enough to schedule two phone interviews, and again I was good enough that I was invited for an on-site interview in Seattle. I lived out of town (about 3 hours away) so I had to drive in for the interview. I had 5 interviews, which seemed to progress in order of seniority. Everything went pretty well, I thought, but I never heard back from anyone. I even sent a follow-up email a week later politely asking if they needed any more information, but never heard a thing. In my opinion it's extremely unprofessional to simply ignore a candidate after they've written a code sample, done 2 phone interviews and 5 hours of on-site interviews. Not impressed with the recruiting.

Shortly after submitting my application I received an email asking me to complete and send in a coding test. They were simple questions including converting a string into an integer, and dealing with BST insertion and deletion. After I passed this test I had a 20-minute phone interview with just a couple quick technical questions. Finally, I was called in for an in-person interview. I interviewed with 3 different software engineers, each for one hour. The interviews were mostly technical questions, which I would write up solutions to on a whiteboard. In one of my interviews, the interviewer asked me a question and as I wrote out and described my solution I could see him working on his smartphone out of the corner of my eye. Then when I looked over at him to check in 5 minutes later he was dozing off. Pretty discouraging. Other then that the interview process was very thorough and I liked the other software developers I met with, who seemed very bright, friendly and passionate about their work.