I applied through other source. The process took 4 weeks. I interviewed at Zillow
Interview
A online test for basic skills, followed by a phone interview, then an in-person interview in Seattle. The in-person interview lasted 3 hours, and was split into 3 one-hour sessions with different interviewers. Each session consisted of about 15 minutes of general questions and 45 mins of whiteboarding.
I applied through college or university. I interviewed at Zillow in Oct 2016
Interview
Met the recruiter during career fair. Later got contacted to hold one phone interview. Typical Data Structures and Algo interview style. I was only asked one question and the interview was 1 hour long. Got the results in about a week.
I applied through an employee referral. I interviewed at Zillow (Seattle, WA) in Feb 2017
Interview
The phone interview took around an hour, and the interviewer was very nice. He asked four questions, i don't remember exactly but are all basic algorithm questions. I made some minor mistakes but figured them out at last.