Towers and Phones, Same Story
A hard 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
- hard
- Seniority
- L6
Interview Prompt
Our connectivity team collects telemetry from cellular towers globally - signal strength, handoff events, and coverage measurements - and we need to combine this with mobile app performance logs to understand how network conditions affect user experience. Design the data warehouse pipeline including the ingestion architecture and the dimension/fact schema.
Summary
Tower signals meet app events. Somewhere in between is the truth.
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