Groupon Data Engineer Interview Questions
The questions to prepare for a Groupon Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Explain how to choose and optimize sorting approaches for large datasets based on memory, data distribution, and stability requirements.
GrouponCompute the median after each arriving number using two balanced heaps for logarithmic update time.
GrouponStructured approach to diagnose failures in an ETL integration, from source extraction through orchestration, data quality, and idempotent recovery.
GrouponCompare ETL and ELT, and explain when ELT is the better pipeline pattern.
GrouponApproach for maintaining data quality and integrity across ETL pipelines.
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Tests breadth of database experience relevant to building and operating UC San Francisco data systems.
GrouponEvaluates your practical SQL skills and your ability to structure data work end to end.
GrouponCalculate daily campaign conversion rates with conditional aggregation, a CTE, and a campaign dimension join.
Niantic
Braze
OutschoolFind the top 10 products by total sales revenue using joins, aggregation, and a CTE.
RTX
iSmile Technologies
CatalinaTests your ability to design a scalable data platform aligned to Groupon’s data needs.
Groupon