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Prep plan
Updated weekly · Last refresh Aug 30

University of Southern California Data Engineer Interview Questions

The questions to prepare for a University of Southern California Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

15questions
~2htotal time
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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~65 min
SQL Duplicate DetectionEasy
Practice

Find duplicate customer profiles by grouping on identifying fields and returning only repeated records.

Group ByHavingAggregationsUniversity of Southern California
SQL vs NoSQL Trade-offsEasy

Explain SQL vs NoSQL trade-offs, including schema design, consistency, scaling, and query flexibility.

JoinsData WranglingAggregationsUniversity of Southern California
SQL vs NoSQL for Go-to-Market DataEasy

Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.

JoinsData WranglingUniversity of Southern California
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

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

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Contact Center Agent Performance MetricsHard
Practice
Practice drill

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

ETLAggregationsData ModelingADP
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2
Pipelines9 questions · ~80 min
Debugging Production Data PipelinesMedium

A structured approach to debugging production data pipelines, with focus on orchestration, data quality, idempotency, and safe backfills.

InfrastructureToolsQualityUniversity of Southern California
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityUniversity of Southern California
Data Integration Tools ExperienceEasy

Discuss the data integration tools you have used and how they fit into ETL, orchestration, and data quality workflows.

InfrastructureToolsETLUniversity of Southern California
Real-Time Dashboard Pipeline DesignHard

Approach for building near-real-time dashboard pipelines with streaming, orchestration, and data quality controls.

Stream ProcessingSchedulingDependenciesUniversity of Southern California
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3
More topics1 question · ~9 min
Aggregating User Activity DataMedium

Tests your coding ability to compute aggregates correctly and efficiently for analytics.

Hash TablesMathArraysUniversity of Southern California
The finish line: interview-readyComplete all 15 questions plus 2 hands-on drills to finish this plan.