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Updated weekly · Last refresh Aug 25

Arch Systems Data Analyst Interview Questions

The questions to prepare for a Arch Systems Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

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1
Behavioral & LeadershipStart here. 10 questions · ~80 min
Prioritizing Across Competing Client ProjectsEasy

Tests prioritization under pressure across multiple projects, including trade-off judgment, stakeholder communication, and ownership of outcomes.

OwnershipPrioritizationArch Systems
Leading Through an Ambiguous Project CrisisMedium

Tests ownership under ambiguity: how you prioritize, align stakeholders, and recover a project when the path forward is unclear.

CommunicationOwnershipDealing With AmbiguityArch Systems
Influencing a Marketing DecisionMedium

Tests influence without authority through data-driven marketing analysis, stakeholder alignment, and ownership of a measurable business outcome.

Influence Without AuthorityCommunicationOwnershipArch Systems
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2
More topics5 questions · ~40 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityArch Systems
Handling Missing DataHard

Tests data quality handling and correct treatment of missingness.

Window FunctionsData WranglingCTEsArch Systems
Selecting Relevant FeaturesMedium

Tests your feature selection approach and ability to justify modeling choices.

RegressionCorrelationCausal InferenceArch Systems
Root Cause Analysis for DeclinesHard

Tests your structured RCA process and ability to translate findings into actionable next steps.

Lagging IndicatorsLeading IndicatorsDiagnosisArch Systems
First Steps for Engagement MetricsMedium

Tests your metrics thinking and prioritization for driving measurable improvements.

Leading IndicatorsDiagnosisEngagement MetricsArch Systems

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

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

InfrastructureToolsData WranglingBenjamin MooreCommonwealth Bank of AustraliaAbercrombie and Fitch
Analyze Decision Impact by RegionMedium
Practice
Practice drill

Use joins, CASE WHEN, and date filtering to compare outcome rates before and after a decision.

Data WranglingDiagnosisAggregationsHarbourVest Partners
Flag and Remove Duplicate CustomersMedium
Practice
Practice drill

Use a CTE and ROW_NUMBER to identify duplicate customer records, keep one row, and flag the rest.

Window FunctionsData WranglingCTEsMicrosoft
The finish line: interview-readyComplete all 15 questions plus 3 hands-on drills to finish this plan.