Got in touch with Zillow through a local recruiting company. I answered 2 pre-screen coding problems. Convert a string to a number, and implement 3-ary tree insert/delete operations. They got back to me a few days after that was submitted. A phone interview was scheduled. The guy doing the phone interview sounded very disinterested from the start of the conversation. I lost my interest almost immediately. He was unfriendly, and almost seemed like he did not want to participate in the call. He also asked a lot of school-like questions. Theoretical questions about performance between different algorithms, between different languages, performance differences between a C++ app vs. a Java app. Some of the questions were good, but he focused too much on things that a software developer really doesn't face too often.