BILL Data Scientist Interview Questions
The questions to prepare for a BILL Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Calculate the monthly spending trends for customers using window functions and joins.
BILLBuild monthly signup cohorts with CTEs and joins to calculate month 0-2 retention for a self-serve product.
Red VenturesBILL
OpenAICalculate channel-level conversion rates from a single events table using GROUP BY and conditional aggregation.
Caesars entertainment
Berkshire Hathaway
LeagueExplain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
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Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
BILLApproach for identifying, prioritizing, and launching a new feature that increases user engagement.
BILLExplain what a p-value means in hypothesis testing and how it relates to statistical significance.
BILLDefine a North Star Metric for a consumer fintech product and connect it to retention, activation, and value creation.
BILLExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
BILLAssesses system design skills for production fraud detection in a financial transaction environment like BILL.
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