The Silent Pipeline
A medium AI Coding mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- AI Coding
- Difficulty
- medium
- Seniority
- L5
Interview Prompt
Last week the upstream booking_events feed broke for 3 days, so fct_bookings emerged empty each morning. Our data-quality suite reported all expectations passing. The on-call only caught it when finance asked why the dashboard was flat. Run tests/test_quality_suite.py to reproduce. Fix the suite (in dq/expectations.py) so an empty input table fails LOUDLY instead of vacuously passing every row-level check.
Summary
Silence, mistaken for success.
How This Interview Works
- Read the task and the repository: the files, the failing check and the constraints
- Work the fix with the AI agent at your side, and run the checks until they pass
- Submit, then answer the interviewer's questions about the change you made
- Get a hire or no-hire decision with feedback on how you drove the agent