After just a couple of days from my application, I received an email asking to fill up a questionnaire, which had some questions about troubleshooting, one question about my interest in Dropbox, and a final creative question (the famous "toaster" question).
After a few days I received an email from another recruiter asking to set up a phone call. I was shortly called by the Team Lead, who asked me just 3-4 questions. If you look at the questions which are posted here on Glassdoor, you will be probably well prepared for the phone interview. I just received one question that I didn't expect.
Unfortunately I received an email saying that I was not a match for this role. The recruiting process is really fast and enjoyable, I will definitely recommend the experience to anyone!!