Exl Data Engineer Interview Questions
The questions to prepare for a Exl Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Approach for maintaining data quality and integrity across ETL pipelines.
ExlStructured approach to diagnose failures in an ETL integration, from source extraction through orchestration, data quality, and idempotent recovery.
ExlDiscuss how cloud storage fits into ETL pipelines, including staging, data quality, and operational monitoring.
ExlTests ability to analyze algorithm efficiency and communicate tradeoffs.
ExlTests coding ability to correctly parse and transform nested JSON into structured outputs.
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Explain 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.
ExlTests understanding of SQL normalization and its impact on data design and query behavior.
ExlCalculate five-day rolling service averages using daily aggregation, a calendar join, and PostgreSQL window functions.
Exl
EXL Service
System OneFind the top 3 customers in each region by transaction volume using joins, aggregation, and window ranking.
JPMorganChase
Silicon Valley Bank
NaviAggregate monthly sales by product category and use LAG to calculate month-over-month changes.
Total Wine & More
Inc.
Benjamin Moore