One phone interview + one onsite interview.
For the phone interview, I met the "Duplicate Files" problem: given a path, find all duplicate files under this path. Don't forget to use hashing.
For the onsite interview: one technical round + lunch + demo show + two technical interviews.
Duplicate files
The following metrics were computed from 13 interview experiences for the Dropbox Software Engineer (Internship) role in San Francisco, California.
Dropbox's interview process for their Software Engineer (Internship) roles in San Francisco, California is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Dropbox's Software Engineer (Internship) interview process in San Francisco, California.