A SaaS company loads two million customer events per day across four event types into curated.fct_cu
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 SaaS company loads two million customer events per day across four event types into curated.fct_customer_events. The table feeds a dashboard, a churn model, and a billing report. The section's deliverable is a quality suite covering all five pillars: freshness (MAX(event_timestamp) within 2 hours), volume (row count vs day-of-week baseline), distribution (amount_usd z-shift, event_type category mix within 5 percentage points), schema (declared columns, types, nullability), and lineage hint (which upstream column produced which output column). Compose the five-pillar suite by adding five quality-check transforms, one per pillar, each with assertion and threshold visible, and routing block-class fires to a paging destination.
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