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Updated weekly · Last refresh Sep 24

dv01 Data Engineer Interview Questions

The questions to prepare for a dv01 Data Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 5 questions + 1 drill · ~69 min
Top 5 Loans by RegionMedium
Practice

Identify the five highest-balance loans within each geographical region using regional ranking.

Window FunctionsJoinsData Manipulationdv01
Null Handling in Loan SQLEasy

Tests your approach to null semantics to keep dv01 loan-level metrics accurate.

Data WranglingCase WhenAggregationsdv01
Rolling Delinquency Rate QueryHard

Tests your SQL ability to compute rolling delinquency metrics for dv01 loan-level transparency reporting.

Window FunctionsDate FunctionsAggregationsdv01
Writing SQL QueriesEasy
Practice
Practice drill

Filter Spring i-Ready Diagnostic results by score and sort qualifying students from highest to lowest.

JoinsData WranglingAggregationsdv01ArteraCurriculum Associates
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2
Pipelines4 questions · ~47 min
Migrate Warehouse With Minimal DowntimeHard

Tests your migration planning and risk management for dv01 reporting continuity.

InfrastructureETLQualitydv01
Monitor Ingestion FailuresMedium

Tests your observability design for dv01 pipelines to catch failures and data quality issues early.

InfrastructureOrchestrationQualitydv01
Ingest Multi-Originator Daily FilesHard

Tests your pipeline design for dv01’s multi-source loan data ingestion with schema variability.

ETLDependenciesData Modelingdv01
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3
More topics2 questions · ~23 min
Approach Time-Limited Data CodingMedium

Evaluates your problem-solving approach and ability to transform data under time constraints.

technicalcollaborationdv01
Deduplicate Loan RecordsMedium
Practice

Deduplicate loan records with a hash map, retaining the record with the newest update timestamp for each composite key.

Hash TablesdeduplicationArraysdv01

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The finish line: interview-readyComplete all 11 questions plus 1 hands-on drill to finish this plan.