Top 20
Prep plan
Updated weekly · Last refresh Aug 30

vidIQ Data Engineer Interview Questions

The questions to prepare for a vidIQ Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

20questions
~3htotal time
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1
PipelinesStart here. 14 questions · ~112 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityvidIQ
Choosing Batch vs Real TimeHard

Evaluate when a pipeline should use stream processing versus scheduled batch based on latency, cost, complexity, and data quality needs.

Stream ProcessingBatch ProcessingDependenciesvidIQ
ETL vs ELT Trade-offsEasy

Compare ETL and ELT, and explain when ELT is the better pipeline pattern.

ETLELTData ModelingvidIQ
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2
Coding3 questions · ~24 min
Python and SQL ProficiencyEasy

Tests your hands-on capability with core data engineering languages and tooling.

Hash TablesArraysSortingvidIQ
Data Manipulation Coding ChallengeMedium

Tests your ability to implement correct and efficient data processing logic under constraints.

Hash TablesArraysSortingvidIQ
Architecture Live CodingMedium

Assesses ability to reason about system architecture and execute SQL and Python under interview constraints.

sqlpythonvidIQ
3
More topics3 questions · ~24 min
Handling Missing ValuesEasy

Tests your data cleaning judgment and how you protect analysis quality.

Data WranglingETLQualityvidIQ
SQL Query on Complex DataMedium

Tests ability to write correct SQL for complex datasets.

JoinsCTEsAggregationsvidIQ
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 20 questions plus 3 hands-on drills to finish this plan.