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S3-Based Data Warehouse with File-Level Access Control

A hard Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
Pipeline Design
Difficulty
hard
Seniority
staff

Interview Prompt

We store all our data in S3 and want to build a warehouse on top of it. The challenge is that different teams have strict data access requirements: some data is confidential and can only be queried by specific groups, and we need that access control enforced at the file level in S3, not just at the query layer. Design the warehouse architecture.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your pipeline design solution with real code execution
  4. Get instant feedback and a hire/no-hire decision