The Morning File
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 live-shopping marketplace drops a single JSON export of the previous day's orders into cloud storage every morning, roughly 4 GB and 20 million records, and analysts need it queryable in the warehouse before the daily standup. The file sometimes arrives late, occasionally gets re-delivered under the same name, and its schema shifts as product teams add fields, so a plain daily reload either double-counts orders or breaks on the new keys. Design the pipeline that lands this file in the warehouse reliably each day.
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