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EPAM Systems Marketing Analytics Specialist Interview Questions

The questions to prepare for a EPAM Systems Marketing Analytics Specialist interview. Questions from real interview reports rank first. Updated daily.

33questions
~5htotal time
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1
A/B Testing & ExperimentationStart here. 4 questions · ~33 min
Diagnose Sample Ratio MismatchHard

Investigate sample ratio mismatch and decide whether an experiment readout is trustworthy enough to ship.

Guardrail MetricsSample Ratio MismatchA/B TestingEPAM Systems
Primary vs Guardrail MetricsEasy

Explain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.

ExperimentationGuardrail MetricsA/B TestingEPAM Systems
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2
Metrics11 questions · ~92 min
Measure Retention Beyond ConversionsMedium

Assess whether campaign-driven conversions turn into retained, valuable users instead of short-lived acquisition spikes.

RetentionConversion RateDiagnosisEPAM Systems
Choose Marketing Performance KPIsEasy

Select the most important marketing KPIs and connect channel metrics to pipeline, revenue, and return.

North Star MetricKPIsLeading IndicatorsEPAM Systems
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3
Strategy3 questions · ~25 min
Sizing an Untapped Product MarketHard

Framework for estimating TAM, adoption, and revenue for a new product launch in an untapped market.

revenue modelnew product launchMarket SizingEPAM Systems
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4
Behavioral & Leadership11 questions · ~92 min
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5
More topics4 questions · ~33 min
SQL Top 3 Campaigns by ConversionMedium
Practice

Rank the top three Digitas México campaigns each month using aggregation and ROW_NUMBER.

Window FunctionsRankingAggregationsEPAM Systems
Segment Customers for Campaign TargetingMedium

Approach for defining actionable customer segments for a targeted marketing campaign and choosing the right trade-offs.

User SegmentsFeature PrioritizationUser NeedsEPAM Systems
Statistical Significance of ChangesMedium

Tests statistical testing choices and how you validate campaign performance changes.

Hypothesis TestingStatistical SignificanceP-ValuesEPAM Systems
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
SQL Window Functions for Rolling MetricsHard
Practice
Practice drill

Calculate each user's 7-day activity average and rank users within their cohort using PostgreSQL window functions.

Window FunctionsDate FunctionsData ManipulationTredenceEchostarEliassen Group
Joining Big Tables with Duplicate KeysMedium
Practice
Practice drill

Join two large tables with repeated keys while preventing many-to-many row multiplication and retaining unmatched keys.

large datasetsJoinsdata integrityEPAM Systems
The finish line: interview-readyComplete all 33 questions plus 2 hands-on drills to finish this plan.