Top 13
Prep plan
Updated weekly · Last refresh Aug 30

Select Minds Data Engineer Interview Questions

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

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1
PipelinesStart here. 11 questions · ~88 min
Production Pipeline Quality MonitoringMedium

Approach for adding data quality checks, observability, and production monitoring to a data pipeline.

Data QualitymonitoringobservabilitySelect Minds
Secure AWS Pipeline Access DesignMedium

Approach for applying least privilege and security controls to an AWS-based data pipeline infrastructure.

InfrastructureSecurityQualitySelect Minds
Design Enterprise Data Lake ArchitectureMedium

Design an AWS data lake architecture handling 12 TB/day batch data and 80K events/sec with governed bronze, silver, and gold layers.

InfrastructureETLData ModelingSelect Minds
Batch vs Streaming Data ProcessingEasy

Compare batch and streaming data processing, including when each fits best in a pipeline.

Stream ProcessingETLBatch ProcessingSelect Minds
Optimize Skewed Spark JoinMedium

Optimize a Spark join where skewed keys create long-running tasks during a transaction to merchant metadata enrichment step.

JoinsperformancesparkSelect Minds
Monitor a Mission Critical PipelineMedium

Design a monitoring and alerting approach for a mission critical pipeline, covering system health, data quality, and operational response.

InfrastructureToolsQualitySelect Minds
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2
More topics2 questions · ~16 min
E-Commerce Star Schema DesignHard

Tests dimensional modeling ability for analytics use cases in Select Minds client data projects.

fact tablesstar schemadimensionsSelect Minds
Recovering from Schema DriftMedium

Tests incident response, root-cause analysis, and preventive engineering practices.

resilienceProblem Solvingschema evolutionSelect Minds

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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 13 questions plus 3 hands-on drills to finish this plan.