I was referred by a current employee of Zillow for a position that was listed as "Full Stack Developer Maps & Search." I applied via the website and several days later received an auto generated email saying they were moving forwards with someone else. I reached out to my contact to thank them for their time and they said that that wasn't what the recruiter said. Sure enough two days later I got an email from a recruiter indicating that he had accidentally declined my application instead of setting up a chance to speak. I replied and we set up a time. During the call with the recruiter I asked more about the position and heard about the full stack aspect of the position and I responded by pointing out my experience across the entire stack from HTML/CSS through the middle tier to DB design/management and DevOps experience. The call seemed to go quite well and he indicated that he would get back to me the following day. Two days later I received an email stating (again) that they were moving forward with another candidate. In order for me to learn from the process I asked what I could have done better. He mentioned two things. First: I do not have a CS degree despite my five years of professional experience and multiple shipped products. Secondly he stated: "he mentioned is that he just wanted deeper experience with technologies. He saw you more as a "jack of all trades"". There appears to be a huge gap between the hiring managers and the people who are doing the recruiting. When a posting asks for full stack experience you speak to that experience you have. If a position requires more specific expertise then that should be conveyed to the candidate so they can best present themselves. Overall the entire process spoke to a disjointed recruiting team and lack of clarity as to what they are looking for.