Product design question
Recruitment at Google costs a billion dollars a year. In our search for false positives, we have had a lot of false negatives. How would you build a product to solve this problem?
- Product design
- Hard
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What this question tests
Product sense applied to an internal hiring pipeline, balancing precision and recall tradeoffs in a screening process.
How to approach it
- Clarify where false negatives happen most: resume screen, phone screen, or onsite, since the fix differs by stage.
- State the goal: reduce qualified candidates rejected too early without letting weak candidates through, avoiding trading one error for the other.
- Focus on the resume and phone-screen stage first, since it is the highest volume and cheapest to iterate on.
- Propose structured, skills-based work samples instead of proxy signals like school pedigree that correlate poorly with on-the-job success.
- Add a calibration loop: track hires' later performance ratings back to their screening scores to see which signals actually predict success.
- Define success as a reduction in false-negative rate, measured against a holdout of previously rejected candidates re-reviewed.
What a strong answer includes
- Frames false negatives and false positives as a precision-recall tradeoff, not simply "let more people through."
- Proposes work-sample or structured signals over pedigree, a known bias-reducing, more predictive approach.
- Builds a feedback loop from hire performance back into screening criteria, closing the measurement gap.
- States the cost asymmetry explicitly: a bad hire is expensive but so is losing top talent to competitors.
Common mistakes
- Proposing to simply lower the bar without addressing precision.
- Not defining how false negatives would even be measured, since rejected candidates' outcomes are never observed.
- Ignoring stage-specific differences in the hiring funnel.
Likely follow-up questions
- How would you measure false negatives when you never see what rejected candidates would have done?
- What is the cost tradeoff between a false positive and false negative hire?
- How would you pilot this without disrupting the whole hiring pipeline?
More product design questions
- Design a TV for a car.Google · Product design · Hard
- Design a refrigerator for the blind.Google · Product design · Hard
- How do you design a camera for the elderly?Google · Product design · Medium
- Redesign Twitter for eCommerce.Shopify · Product design · Hard
- How would you go about designing a new location sharing app for Google?Google · Product design · Medium
- How would you improve Google Home?Google · Product design · Easy
More questions from Google
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop