The Dropbox interview process was pretty okay. It was very long and they saved the hardest questions for last when you're already exhausted. Sometimes the interviewers will be intentionally vague and still won't answer questions. Sometimes they want to see what assumptions you make when forced to fill in the missing pieces yourself and sometimes they just want to see if you can ask the 'right' questions which they will then answer. It's definitely a frustrating back and forth to do with every interviewer just to find out what they want. Lunch was nice at Tuck Shop and the building is pretty much like every other tech building. They have a lot of perks but not on the Google/FB level. They do a tech demo of the things they're working on and the push you to make a team choice at the end of your interview. It's nice that they listen to you about what you want to do rather than assigning you somewhere but making a choice like that is hard to do on the spot at the end of an exhausting interview. Also, keep in mind that picking a team to join and getting the tech demos are not in any way related to whether or not you get an offer. In hindsight it seems like a huge waste of mine and their time to do those things before a decision has been made. Also, if you want feedback, try to get what little you can as you leave. They won't provide any after the fact beyond the typical bs that they tell everyone ("it was a really really tough choice for us blah blah"). Of the individual interviews I did, 3 had good engaging interviewers and 2 were pretty poor with lackluster interactions from them. Overall, the interview was average difficulty with the exception of the concurrency curveball. If you can manage that then their interview is trivial withe good interviewers.