Protagonist Interview Questions
The questions to prepare for Protagonist interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Use layered CTEs and ROW_NUMBER to rank the top three Wealthfront products by monthly net revenue.
ProtagonistIdentify the highest-credit-score 5% of applicants within each state using percentiles and window ranking.
American Credit AcceptanceMeasure dashboard adoption by Johns Hopkins user segment using joins, aggregation, and reporting-period filters.
The Johns Hopkins UniversityExplain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
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Explain how you align stakeholders with competing priorities, make trade-offs explicit, and keep execution on track.
ProtagonistExplain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.
ProtagonistIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
ProtagonistFramework for evaluating customer feedback and turning it into prioritized product improvements.
ProtagonistExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
ProtagonistApproach for adding data quality checks, observability, and production monitoring to a data pipeline.
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