Dropbox Interview Questions
Practice the exact questions companies are asking right now.
Implement feedback for word guessing game
You are implementing the core logic for a simple word-guessing game. There is: - A dictionary of valid words: a list of distinct lowercase strings, al...
Design file-processing API with long-running jobs
You are asked to design an HTTP-based API and high-level backend architecture for processing files in a cloud storage service (similar to a simplified...
Implement hierarchical folder access check
You are asked to simulate a simple hierarchical file system and implement an access-check function. The file system consists of folders arranged in a ...
Answer rapid-fire leadership checklist
Answer a rapid-fire leadership checklist: (a) Describe a time you protected customer privacy under executive time pressure—what did you refuse to log ...
Explain a project with measurable impact
Choose one impactful project from your resume and deep-dive it in 8–10 minutes: define the problem and business goal, baseline and target, your precis...
Review checkout code for defects and privacy
You are reviewing a supermarket checkout implementation. Identify and prioritize issues and fixes across: (a) monetary correctness (avoid floating poi...
Run org-safe online experiment for recommender
Propose an online experimentation plan to evaluate the file recommender in production across multiple organizations where collaborators can influence ...
Design enterprise file recommendations under ACLs
Design a system to recommend to a signed-in enterprise user the next files they are most likely to open in a productivity suite. Cover: (1) key signal...
Compute max island with constrained flips
Given an n×n binary grid G where 1=land and 0=water with 4-directional connectivity, return the size of the largest island achievable by flipping at m...