Protagonist Interview Questions
The questions to prepare for Protagonist interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Explain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.
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Describe a time you had to choose between speed, quality, and scope, and how you aligned stakeholders around the trade-off.
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.
ProtagonistCalculate daily session-level funnel conversion rates using CTEs, CASE WHEN, and date functions.
Use joins, CASE WHEN, and date filtering to compare outcome rates before and after a decision.
HarbourVest PartnersRank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.
WaymoExplain 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.
ProtagonistExplain statistical significance in experiments and how p-values and confidence intervals guide interpretation.
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