A Million Moving Dots
A medium Pipeline Design 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
- Pipeline Design
- Difficulty
- medium
- Seniority
- mid
Interview Prompt
Every active courier's phone emits a location ping every few seconds, tens of billions a day at peak, while only a few million deliveries complete daily. That one stream drives the customer's live map and ETA and the once-a-day settlement of courier payouts and merchant fees. Design the platform behind both.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Draw your pipeline on the design canvas: sources, transforms, storage and checks
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision