Pros
Zillow is truly a fast-paced, innovative and exciting company to work for! This company takes its core values seriously (based around teamwork, visibility, empowerment, ownership, etc), which is exactly why their interview process is so detailed and sometimes lengthy. The whole process took me about a month and a half (from application to offer), so stay persistent if it feels like the right move for you!
Cons
No complaints to report so far. Everyone I work with is awesome, and the work I'm doing is interesting!!