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Updated weekly · Last refresh Oct 17

dm-drogerie markt GmbH + Co. KG Data Engineer Interview Questions

The questions to prepare for a dm-drogerie markt GmbH + Co. KG Data Engineer interview. Questions from real interview reports rank first. Updated daily.

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1

PipelinesStart here. 17 questions · ~136 min

Privacy Compliance in Data PipelinesMedium

Approach for building privacy controls, lineage, and auditability into data pipelines that handle personal data.

Compliancedata privacyPipelines

dm-drogerie markt GmbH + Co. KG

Production Pipeline Quality MonitoringMedium

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

Data Qualitymonitoringobservability

dm-drogerie markt GmbH + Co. KG

Monitoring Tools for Data PipelinesEasy

Preferred tools and approach for monitoring and managing data pipelines in production.

InfrastructureToolsQuality

dm-drogerie markt GmbH + Co. KG

Cloud Platform Experience for PipelinesMedium

Describe practical experience building pipelines on AWS, including orchestration, security, and data quality.

InfrastructureETLData Modeling

dm-drogerie markt GmbH + Co. KG

Data Governance in PipelinesMedium

Describe a practical approach to data governance across shared data pipelines, including quality, ownership, lineage, and controlled data access.

InfrastructureQuality

dm-drogerie markt GmbH + Co. KG

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2

Behavioral & Leadership8 questions · ~64 min

Explaining Technical Constraints ClearlyMedium

Tests whether you can translate technical constraints into business terms, manage stakeholder expectations, and drive alignment on tradeoffs.

Stakeholder Managementsoft skillsCommunication

dm-drogerie markt GmbH + Co. KG

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3

More topics2 questions · ~16 min

Storing JSON Column ChoicesMedium

Assesses your understanding of JSON storage options and their tradeoffs in relational databases.

database design

dm-drogerie markt GmbH + Co. KG

SQL Join Types in WarehousesMedium

Tests SQL fundamentals and correct join selection for warehouse modeling and query correctness.

sql basicsjoin types

dm-drogerie markt GmbH + Co. KG

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min

Monthly Sales Trends by CategoryMedium

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData Wrangling

Total Wine & More

Contact Center Agent Performance MetricsHard

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData Modeling

Cleaning a Messy DatasetMedium

Filter invalid game events and normalize event names using PostgreSQL string and null handling.

missing valuesdata cleaningnull handling

The finish line: interview-readyComplete all 27 questions plus 3 hands-on drills to finish this plan.