Seconds to Trend
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
Design the pipeline that turns roughly 5 billion engagement events a day (views, likes, watch-time pings) from a short-video app into 2 outputs: a trending surface of the hottest videos and the daily active user and 7-day retention reports. Both read the same events, and streaming everything is not an option.
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