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Arthur J. Gallagher & Data Analyst Interview Questions

The questions to prepare for a Arthur J. Gallagher & Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

29questions
~4htotal time
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1
PipelinesStart here. 3 questions · ~24 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityArthur J. Gallagher &
Python or R for AutomationMedium

Tests your ability to automate data workflows using Python or R for repeatable analytics.

ToolsETLAutomationArthur J. Gallagher &
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2
SQL & Data Manipulation8 questions + 3 drills · ~94 min
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualityArthur J. Gallagher &
Efficient Joins and QueriesMedium

Tests your ability to write efficient SQL for dashboard-ready datasets using complex joins and query optimization.

JoinsCTEsAggregationsArthur J. Gallagher &
Advanced SQL for AnalyticsEasy

Tests your understanding of advanced SQL techniques for extracting and transforming data for analytics at Arthur J. Gallagher &.

JoinsData WranglingCTEsArthur J. Gallagher &
Flag Incomplete Campaign TrackingMedium
Practice
Practice drill

Use joins, CTEs, CASE, and null handling to quantify missing tracking data by campaign and channel.

null handlingData Wranglingdata integrityArthur J. Gallagher &
Monthly Team Performance Cost AnalysisMedium
Practice
Practice drill

Use joins, a CTE, and date aggregation to calculate monthly team volume, average turnaround time, and cost per unit.

Date FunctionsJoinsGroup ByArthur J. Gallagher &Unity TechnologiesVirtual Employee
Top 3 Policies Per RegionEasy
Practice
Practice drill

Use ROW_NUMBER and a region join to identify the three highest-grossing active policies in each region.

Window FunctionsRankingAggregationsArthur J. Gallagher &State Farm
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3
Metrics6 questions · ~48 min
Explain KPI and Chart ChoicesEasy

Tests your visualization and KPI selection reasoning for effective decision support.

KPIsLeading IndicatorsDiagnosisArthur J. Gallagher &
Design Stakeholder-Friendly DashboardsMedium

Tests your ability to design dashboards that support decision-making for non-technical users.

KPIsData WranglingDiagnosisArthur J. Gallagher &
Analyze Regional Sales PerformanceMedium

Tests your metrics thinking and analytical approach to performance measurement and resource decisions.

KPIsLeading IndicatorsDiagnosisArthur J. Gallagher &
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4
Behavioral & Leadership12 questions · ~96 min
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The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.