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Streaming Device Telemetry and Ad Impression Pipeline

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
staff

Interview Prompt

Our platform streams content to millions of devices and our business depends on accurate ad impression data for billing and reliable viewing event data for content performance analytics. These two consumers have different latency requirements and tolerance for approximation. Design the end-to-end pipeline for device telemetry ingestion and the data model that serves both.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your pipeline design solution with real code execution
  4. Get instant feedback and a hire/no-hire decision