Applied via LinkedIn. Was given a coding challenge at HackerRank, which was moderate, but practical. Eventually was invited to on-site interview in Seattle, where I had all day long interview. I was under strong impression everything went well. Just one thing was suspicious - all interviewers were young, and when I asked about average team age - they mentioned a number below 30. Taking into account they work 10+ hours a day, they definitely don't want to consider family guys of age around 40. That's my best guess. Worth to mention I was watching for people coming in and out and they were pretty young too, that is also why my guess can be right. Obviously I did not feel as I'm a good fit for them because of that. Having previous successful interview experiences with other companies like Microsoft, I can imagine these guys are looking for young slaves. Given that they don't pay above the market, I see no reasons to go there unless you don't want to loose your family or you are a single work-addicted person. To contrast - Microsoft and Facebook interviews were fair, practical and they are giving some details on where you failed (if you failed). These guys would never tell you the truth. The office building.. was simply dirty. Maybe I used to work with in much cleaner spaces in Europe, but other offices in the US are much nicer. What was good about this experience? - they paid for the trip to Seattle. Appreciated that.