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Prep plan
Updated weekly · Last refresh Sep 24

Northern Trust Data Engineer Interview Questions

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

17questions
~2htotal time
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1
PipelinesStart here. 10 questions · ~81 min
Data Quality and Schema EvolutionMedium

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

schema evolutionData ModelingQualityNorthern Trust
Scalable Real-Time Streaming PipelineHard

Assesses your system design for scalable, multi-source real-time streaming transformations.

data pipelineNorthern Trust
External Credit Bureau FeaturesMedium

Evaluates your approach to cleaning, joining, and feature engineering for credit risk use cases.

data cleaningFeature EngineeringNorthern Trust
Data Quality and Lineage for Sensitive RecordsMedium

Evaluates data quality controls and lineage practices for regulated, sensitive financial data.

Data Qualitydata lineageNorthern Trust
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2
Behavioral & Leadership4 questions · ~32 min
Handling Architectural Disagreement Cross-FunctionallyMedium

Tests conflict resolution and influence without authority when a cross-functional stakeholder challenges an architectural decision.

Influence Without AuthorityConflict ResolutionCommunicationNorthern Trust
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3
More topics3 questions · ~24 min
Optimizing Slow PostgreSQL Research QueriesMedium

Explain how you diagnosed and optimized a slow PostgreSQL query using execution plans, indexing, and query rewrites.

JoinsData WranglingAggregationsNorthern Trust
Python and Data FormatsMedium

Assesses foundational Python concepts and practical data format knowledge relevant to data engineering.

Data StructurespythonNorthern Trust
SQL and ETL FundamentalsMedium

Tests practical SQL and ETL skills for day-to-day data engineering work.

ETLsqlNorthern Trust

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