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Design a personalized news / feed ranking system.

A news feed is not a generic recommender. The clock is a first-class signal: a story that mattered this morning is noise by tonight. The interviewer wants recency decay, an engagement-versus-quality value model, and an answer for filter bubbles, not just retrieval plus ranking.

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

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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 misinformation / fake-news detection system at scale.Next in this trackDesign a language detection system.Next in this trackDesign an audio denoising / speech enhancement system.

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