Loading interview...

4,500 Stores Before Sunrise

A medium 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
medium
Seniority
senior

Interview Prompt

Every night, 4,500 stores each upload a CSV of current inventory to S3. The replenishment team needs clean, validated data in the warehouse by 7 AM. Some files arrive late, some are malformed, and re-runs have been producing duplicates. Design the pipeline.

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