A subscription company runs Postgres signups -> daily Python ETL -> Snowflake daily_signups_by_count
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
A subscription company runs Postgres signups -> daily Python ETL -> Snowflake daily_signups_by_country -> Looker. Marketing then asks for the chart redrawn under a new country grouping for the last 18 months. The team kicks off a backfill and discovers Postgres holds only the last 90 days. Apply the section's four-layer framing and add the missing layer that would make the 18-month backfill possible.
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