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Updated weekly · Last refresh Aug 30

Hermes Corporate Data Scientist Interview Questions

The questions to prepare for a Hermes Corporate Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

26questions
~4htotal time
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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~54 min
Rolling Average with SQL WindowsMedium
Practice

Calculate each active RpmGlobal Enterprise Planning user's 30-day rolling average of daily activity.

Hermes Corporate
Resolve Conflicting Customer AttributesMedium
Practice
Practice drill

Use joins, CTEs, and row ranking to resolve conflicting customer profile values across ACME House systems.

JoinsData WranglingQualityRamsey SolutionsACME House
Reconcile Conflicting Invoice TotalsMedium
Practice
Practice drill

Reconcile billing and ERP invoice totals using joins, a CTE for latest snapshots, and CASE-based discrepancy classification.

JoinsData WranglingQualityLiterati
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2
A/B Testing & Experimentation4 questions · ~34 min
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingHermes Corporate
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3
Product Sense3 questions · ~25 min
Define Metrics for New FeaturesMedium

Define a success metric for a new feature that captures real user value, not just raw usage.

MetricsFeature Prioritizationuser valueHermes Corporate
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4
Behavioral & Leadership7 questions · ~59 min
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5
More topics8 questions · ~68 min
Analyze New Feature EngagementMedium

Assess a new feature using adoption, activation, repeat usage, and retention metrics tied to user value.

Leading IndicatorsA/B TestingEngagement MetricsHermes Corporate
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityHermes Corporate
Explain Statistical SignificanceMedium

Assesses communication skills for conveying statistical ideas to non-technical audiences.

CommunicationStatistical SignificanceHermes Corporate
Applying Machine Learning to PricingMedium

Evaluates your domain thinking for how ML can create value in pricing use cases.

pricingHermes Corporate
Model Performance EvaluationMedium

Tests ability to choose appropriate metrics and statistical evaluation methods.

performance evaluationModel MetricsHermes Corporate
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The finish line: interview-readyComplete all 26 questions plus 2 hands-on drills to finish this plan.