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Design an evaluation framework for an ads ranking system.

Separate offline gates (AUC, calibration, NDCG) from the online verdict (A/B with revenue and advertiser guardrails), plus counterfactual replay between.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Separate offline gates (AUC, calibration, NDCG) from the online verdict (A/B with revenue and advertiser guardrails), plus counterfactual replay between.

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Applied AI Engineering·The interviewPremium14mDriving the design conversationA design round is a conversation you are expected to lead, not a question you answer. This lesson is the shape that works, the four moments that decide the outcome, and the two classic ways strong candidates lose one.Applied AI Engineering·The interviewPremium12mTurning this course into a study planA concrete four-week plan mapping the seven modules onto the question bank, plus what to do differently if your interview is next week rather than next month.

UP NEXT ON YOUR JOURNEY

Next in this trackDesign a personalized news / feed ranking system.Next in this trackDesign a misinformation / fake-news detection system at scale.Next in this trackDesign a language detection system.

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