Exl Data Engineer Interview Questions
The questions to prepare for a Exl Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Discuss how cloud storage fits into ETL pipelines, including staging, data quality, and operational monitoring.
ExlSet up CI CD and automated testing for data pipelines so changes ship faster with fewer production issues.
ExlExplain how you improved a slow ETL pipeline on multi-terabyte data, including bottleneck analysis, tuning choices, and validation.
ExlExplain practical SQL approaches for identifying, removing, and preventing duplicates and NULL-related data quality issues.
ExlEvaluates experience integrating SQL with ADF and Spark for pipelines.
ExlAssesses analytics modeling knowledge using DAX.
ExlRewrite a slow multi-table revenue query using pre-aggregation, window functions, and PostgreSQL performance techniques.
ExlCalculate five-day rolling service averages using daily aggregation, a calendar join, and PostgreSQL window functions.
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EXL ServicevvConstructCombine validated observations with profiles and pivot monthly scores into one row per entity.
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Implement a linear array-sum solution and explain why its time complexity is O(n).
ExlTests coding ability to correctly parse and transform nested JSON into structured outputs.
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