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New Interview Questions: July 2026

Questions added to the Dataford question bank in July 2026, ranked by how often they are asked in real interviews.

100questions
~14htotal time
4,918companies covered
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1
CodingStart here. 11 questions · ~95 min
Linked List ReversalEasy
Recently asked

Tests basic coding ability and pointer/data-structure manipulation.

RecursionLinked ListsArraysPearlRapid Ratings InternationalCoBank
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2
Execution12 questions · ~103 min
Prioritize Across Competing Data ProjectsEasy
Recently asked

Explain how you prioritize across multiple concurrent data engineering projects with competing stakeholder needs and limited capacity.

Trade-offsRoadmappingScope ManagementAct DigitalVectorworksCognixia
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3
Strategy7 questions · ~60 min
Tell Me About YourselfEasy
Recently asked

Tests your ability to deliver a clear, relevant introduction tailored to the role at Aqr.

Competitive AnalysisGo-to-MarketAAi WorkspaceBrexElevate Credit
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4
Metrics12 questions · ~103 min
Investigate User Engagement DeclineMedium
Recently asked

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

RetentionDiagnosisEngagement MetricsMeta ITThe E.W. ScrippsGap
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5
Product Sense11 questions · ~95 min
Designing for Accessibility at ScaleMedium
Recently asked

Approach for building accessibility into product design through user needs, research, use cases, and measurable outcomes.

User NeedsPain PointsUse CasesEverly HealthHearstChicago Public Schools
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6
Pipelines12 questions · ~103 min
Backfilling Missing Pipeline DataMedium
Recently asked

Approach for safely backfilling missing data while preserving correctness, idempotency, and data quality.

ETLQualityBread FinancialInfobloxAlabama Staffing
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7
More topics35 questions · ~302 min
Interpreting P Values in TestingEasy
Recently asked

Explain what a p-value means in hypothesis testing and how it relates to statistical significance.

Hypothesis TestingStatistical SignificanceP-ValuesPublicis GroupeUC Santa BarbaraEnterprise Peak
Handling Missing Data in MLMedium
Recently asked

Explain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.

Feature EngineeringData WranglingSupervised LearningOak Ridge National LaboratoryFlexon TechnologiesExpedia Group
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 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 WranglingTotal Wine & MoreHD SupplyBenjamin Moore
Reconcile ERP and Ledger Month-End TotalsMedium
Practice
Practice drill

Compare ERP and ledger month-end totals by month and flag mismatches using joins and conditional logic.

Data WranglingETLQualityMemorial Hermann Health System
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