EPAM Systems Data Engineer Interview Questions
The questions to prepare for a EPAM Systems Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Reverse a singly linked list in place by rewiring node pointers with O(n) time and O(1) extra space.
EPAM SystemsAssesses ability to implement list transformations and manage intermediate data.
EPAM SystemsApproach for building privacy controls, lineage, and auditability into data pipelines that handle personal data.
EPAM SystemsApproach for designing an end-to-end data pipeline from ingestion through transformation, storage, and downstream consumption.
EPAM SystemsApproach for validating ETL data with schema, business rule, and pipeline-level checks.
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Explain a structured PostgreSQL query tuning approach using execution plans, indexes, joins, and CTE evaluation choices.
EPAM SystemsTests query planning understanding and join strategy selection for efficient large-scale processing.
EPAM SystemsEvaluates migration approach and integration tool selection.
EPAM SystemsRank the top three EPAM India customers by item-level spending over the last three months using joins and aggregation.
EPAM SystemsCalculate the monthly spending trends for customers using window functions and joins.
The Home Depot
Aviso
World Wide TechnologyFind duplicate client contact values using a CTE, join, GROUP BY, and HAVING.
EPAM Systems