Delivery Hero India Data Engineer Interview Questions
The questions to prepare for a Delivery Hero India Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Redesign a slow Databricks Spark ETL pipeline to cut runtime from 3 hours to under 60 minutes without breaking data quality or SLAs.
How to choose between row-oriented and column-oriented formats across different stages of a data pipeline.
Tests your ability to implement an in-place two-pointer deduplication algorithm.
Tests your ability to implement deduplication with correct counting and edge cases.
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Tests advanced SQL skills for multi-join aggregations and windowing logic.
Tests your understanding of scalable join strategies and resource constraints.
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