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Updated weekly · Last refresh Aug 30

San Diego State University Data Engineer Interview Questions

The questions to prepare for a San Diego State University Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 3 questions · ~25 min
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

StringsfunctionspythonSan Diego State University
Explain Complexity for a Coding ChallengeEasy

Evaluates your ability to reason about algorithmic complexity and performance.

MathArraysSan Diego State University
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2
Pipelines41 questions · ~342 min
Cloud Storage in Data PipelinesEasy

Discuss how cloud storage fits into ETL pipelines, including staging, data quality, and operational monitoring.

InfrastructureETLSan Diego State University
Backfilling Missing Pipeline DataMedium

Approach for safely backfilling missing data while preserving correctness, idempotency, and data quality.

ETLQualitySan Diego State University
Production Pipeline Quality MonitoringMedium

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

Data QualitymonitoringobservabilitySan Diego State University
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3
SQL & Data Manipulation4 questions + 3 drills · ~63 min
Analyze Data Across Multiple TablesMedium

Tests your SQL skills for joins, aggregation, and multi-table analysis.

JoinsGroup ByAggregationsSan Diego State University
Optimize Data Warehouse Query PerformanceHard

Tests your ability to improve warehouse query performance through tuning and design choices.

Window FunctionsJoinsAggregationsSan Diego State University
Optimize SQL Query PerformanceHard

Tests your ability to diagnose and improve SQL performance in production data systems.

Joinsindexesquery optimizationSan Diego State University
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
Handle Missing Financial Input ValuesMedium
Practice
Practice drill

Use joins, CTEs, and CASE logic to flag and fill missing financial fields for Qlik planning records.

Data WranglingETLQualityQlik
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4
More topics2 questions · ~17 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.