I applied through a recruiter. The process took 1 week. I interviewed at Zillow (Seattle, WA) in June 2016
Interview
First, there's an initial technical phone screen comprised of extremely basic coding challenges, which shouldn't take more than 5 minutes to complete each.
The second interview is a bit more challenging, but, unfortunately, the phone connection was poor (there were 5-10 dropped connections) and, due to the suffering audio quality, it was difficult or impossible to understand the other end of the call.
Interview questions [1]
Question 1
Find the in-order successor of a node within a binary tree.
Sorry to hear that we had some technical difficulties on our end! Thanks for the feedback and thank you for your time spent with us in the process. Annie - VP Recruiting