There was no direct contact with anyone from Dropbox. I was sent a technical assessment that seemed to be of normal difficulty level and was moved on to the second round which was an extreme jump in level from the first. I asked two other engineers that have been coding for 3 years and they both didn't think they'd be able to finish the ask in the given amount of time.

Was sent a timed technical test on leetcode. Did not pass despite explaining my code in comments too, maybe the code was not very optimal. Wording in job description made it seem like it involved a lot of work.