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Major League Baseball (MLB) Software Engineer Interview Questions

The questions to prepare for a Major League Baseball (MLB) Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 14 questions · ~115 min
Design Patterns in OOPMedium

Explain design patterns and discuss when to use Singleton or Factory to solve object-oriented design problems.

abstractionfunctionsoopMajor League Baseball (MLB)
Pass-By-Value in JavaEasy

Tests your understanding of Java parameter passing and object behavior.

javaabstractionfunctionsMajor League Baseball (MLB)
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2
SQL & Data Manipulation3 questions + 3 drills · ~55 min
Technical Question About OracleMedium

Tests knowledge of Oracle database concepts and ability to apply them to technical questions.

performancetransactionsdata integrityMajor League Baseball (MLB)
Rolling Ticket Sales QueryMedium
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Practice drill

Calculate 7-day stadium ticket averages with a complete date spine that includes days without MLB games.

Window FunctionsDate FunctionsRunning TotalsMajor League Baseball (MLB)
Analyzing Operations Bottlenecks with SQLHard
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Practice drill

Use multi-level CTEs, joins, and LAG to identify Samsung regional inventory shortages and late deliveries.

JoinsperformanceAggregationsSamsung ElectronicsApeel Sciences
Supplier Cost Variance Trend AnalysisHard
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Practice drill

Use joins, a CTE, and date functions to find monthly supplier cost variance and on-time delivery trends.

financial dataData WranglingperformanceBae Systems Usa
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3
Behavioral & Leadership19 questions · ~157 min
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4
More topics5 questions · ~41 min
System Design for a ServiceHard

Tests your ability to design scalable systems with clear tradeoffs.

system designTrade-offsScope ManagementMajor League Baseball (MLB)
Distributed Cache for Game StatsHard

Tests system design for caching, scalability, and performance under high concurrency.

Cold StartFeature StoreModel ServingMajor League Baseball (MLB)
High-Throughput Baseball Sensor PipelineHard

Tests system design for low-latency ingestion, processing, and distribution at scale.

Stream Processinglow latencyETLMajor League Baseball (MLB)
Secure DB Connections in MicroservicesMedium

Tests secure connectivity and operational reliability in microservices database access.

InfrastructureAPIsperformanceMajor League Baseball (MLB)
Resilient Video Replay DistributionHard

Tests system design for reliability, latency, and efficient media distribution.

Launch PlanningTrade-offsRisk AssessmentMajor League Baseball (MLB)

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