EPAM Systems Data Analyst Interview Questions
The questions to prepare for a EPAM Systems Data Analyst interview. Questions from real interview reports rank first. Updated daily.
Calculate daily and cumulative product revenue with CTEs, joins, date series, and window functions.
EPAM SystemsFind duplicate client contact values using a CTE, join, GROUP BY, and HAVING.
EPAM SystemsExplain how to prevent premature A/B test decisions by pre-registering sample size, analysis timing, and guardrail-based ship rules.
EPAM SystemsDefine primary and guardrail metrics for a discovery UI test, with power, MDE, and a pre-registered analysis plan.
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Assess a new feature using adoption, activation, repeat usage, and retention metrics tied to user value.
EPAM SystemsInvestigate why a key KPI moved the wrong way after a product change and separate signal from noise.
EPAM SystemsApproach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.
EPAM SystemsApproach for maintaining data quality and integrity across ETL pipelines.
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