ETS Data Engineer Interview Questions
The questions to prepare for a ETS Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Approach for validating ETL data with schema, business rule, and pipeline-level checks.
ETSExplain how you improved a slow ETL pipeline on multi-terabyte data, including bottleneck analysis, tuning choices, and validation.
ETSApproach for embedding security controls into data pipeline delivery, orchestration, and operations.
ETSTests understanding of indexing strategies and their impact on query performance.
ETSTests foundational understanding of database types relevant to marketing analytics.
ETSTests ability to plan scalable joins/merges, manage data volume, and ensure correctness.
ETSIdentify repeated test-taker registrations by matching test-taker, test, and registration date.
ETSCalculate Beyond Finance daily sign-ups and their 30-day rolling average using CTEs and window functions.
Beyond FinanceHHEINEKEN InternationalPProclink ConsultingAggregate monthly sales by product category and use LAG to calculate month-over-month changes.
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Tests ability to implement data cleaning logic and handle common data issues in Python.
ETSTests algorithm selection and justification for performance and scalability in data processing.
ETS