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Citizen (NY) Interview Questions

The questions to prepare for Citizen (NY) interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 4 questions + 1 drill · ~44 min
Top Customers by Sales RevenueEasy
Practice

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsCitizen (NY)
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

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

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
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2
Pipelines4 questions · ~34 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityCitizen (NY)
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3
Machine Learning3 questions · ~25 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffCitizen (NY)
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4
Execution6 questions · ~51 min
Handle Conflict Within Your TeamEasy

Explain how you handle team conflict while keeping delivery on track and maintaining trust across stakeholders.

Trade-offsRisk AssessmentScope ManagementCitizen (NY)
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5
Metrics5 questions · ~42 min
Investigate User Engagement DeclineMedium

Investigate a 15% engagement decline by decomposing the metric, isolating root causes, and proposing actions.

RetentionDiagnosisEngagement MetricsCitizen (NY)
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6
Product Sense6 questions · ~51 min
Prioritize Features for a New ProductMedium

A framework for deciding which features should ship first when building a new product.

Feature PrioritizationUser Needsproduct developmentCitizen (NY)
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7
More topics22 questions · ~187 min
Pivoting Strategy From Customer SignalsMedium

Describe how you used market or customer data to change course, and how you made the new strategy credible and measurable.

EstimationCompetitive AnalysisGrowth StrategyCitizen (NY)
Choosing Classification Evaluation MetricsEasy

Explain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.

PrecisionAccuracyRecallCitizen (NY)
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The finish line: interview-readyComplete all 50 questions plus 1 hands-on drill to finish this plan.