Zulily Data Scientist Interview Questions
The questions to prepare for a Zulily Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
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Tests your ability to build LTV models that handle seasonality in a retail setting like Zulily.
ZulilyTests your approach to robust preprocessing for time-series data with missingness and outliers.
ZulilyTests your data cleaning and preprocessing skills for recommendation pipelines using messy behavioral logs.
ZulilyTests your ability to design pricing approaches under short time horizons and rapidly changing demand.
ZulilyTests your metric design, funnel diagnosis, and ability to investigate conversion issues with data.
ZulilyAssesses your ability to translate requirements into correct algorithms and handle edge cases.
ZulilyAggregate January 2024 completed transactions by category using WHERE, GROUP BY, and SUM in PostgreSQL.
Zulily
Abercrombie and Fitch
WalgreensCalculate month-1 retention for January vs February signup cohorts using joins, date filtering, and aggregation.
TrideumZulily
eBayAggregate monthly sales totals by product category using JOINs, GROUP BY, and date formatting.
Walgreens
Rev
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