Two Sources of Truth
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
- mid
Interview Prompt
A retail company is moving its on-prem orders database to a cloud warehouse, and analytics teams cannot lose access to current data during the months-long cutover. Design a pipeline that does the one-time bulk load of the existing 2 TB, keeps the warehouse within minutes of the live source as new orders land, and proves the two systems agree before anyone flips reporting over.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision