An e-commerce startup has Postgres for the app, an empty Snowflake warehouse set up last quarter, an
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
Interview Prompt
An e-commerce startup has Postgres for the app, an empty Snowflake warehouse set up last quarter, and a Looker dashboard that still queries Postgres directly on every refresh. The dashboard is dragging the checkout API down each morning. Apply the section's three-gaps framing to close the gap between the operational source and the dashboard, refreshing once a day at 7am Pacific. Postgres must stay (the app still needs it).
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