Top 14
Prep plan
Updated weekly · Last refresh Aug 30

Act Digital Data Engineer Interview Questions

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

14questions
~2htotal time
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1
PipelinesStart here. 10 questions · ~80 min
Diagnose Pipeline Performance DropMedium

Diagnose a sudden pipeline slowdown by tracing latency, throughput, data quality, and orchestration signals across the stack.

InfrastructureDependenciesQualityAct Digital
Common Data Pipeline Design PitfallsMedium

Covers frequent pipeline design mistakes, especially around ETL, orchestration, idempotency, and data quality.

InfrastructureQualityAct Digital
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityAct Digital
Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch ProcessingAct Digital
Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualityAct Digital
Azure Data Factory ComponentsMedium

Tests your knowledge of Azure Data Factory features and how you apply them to real pipeline work.

ToolsETLOrchestrationAct Digital
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2
Behavioral & Leadership3 questions · ~24 min
Mentoring a Struggling Junior EngineerMedium

Tests how you mentor junior teammates through structured feedback, communication, and ownership for both growth and team outcomes.

MentorshipCommunicationLeadershipAct Digital
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3
More topics1 question · ~8 min
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 14 questions plus 3 hands-on drills to finish this plan.