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Guy Carpenter Data Engineer Interview Questions

The questions to prepare for a Guy Carpenter Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 3 questions + 3 drills · ~54 min
Write-Heavy vs Read-Heavy WorkloadsMedium

Tests workload-aware database design decisions for reliable, performant data engineering.

sql basicspostgresqlperformanceGuy Carpenter
Indexing and Query OptimizationHard

Tests indexing knowledge and practical performance tuning for large insurance transaction datasets.

Performance TuningindexessqlGuy Carpenter
Fixing Join Memory IssuesHard

Tests query refactoring and schema strategies to resolve join-induced resource problems.

Performance TuningJoinsData ModelingGuy Carpenter
Top Earners via Table JoinMedium
Practice
Practice drill

Rank Motorola Solutions employees by total earnings using a LEFT JOIN, aggregation, COALESCE, and ROW_NUMBER.

JoinssqlMotorola SolutionsMotorola
Weekly Service KPI by TeamMedium
Practice
Practice drill

Analyze weekly service delivery performance by team using joins, a CTE, date aggregation, and KPI calculations.

KPIJoinssqlDeloitteReputation
Retention Cohorts With Complex JoinsHard
Practice
Practice drill

Build twelve-month Twitch viewer retention cohorts with CTEs, joins, date offsets, and conditional aggregation.

JoinssqlCohort AnalysisTwitch
2
Behavioral & Leadership6 questions · ~48 min
Handling Architectural Stakeholder ConflictMedium

Tests conflict resolution and influence when a stakeholder challenges an architectural decision with meaningful business or technical stakes.

Conflict ResolutionStakeholder ManagementCommunicationGuy Carpenter
Handling Ambiguous Data Science ScopeMedium

Tests how you handle ambiguity in a data science project by creating structure, aligning stakeholders, and driving delivery despite unclear requirements.

OwnershipDealing With AmbiguityrequirementsGuy Carpenter
Resolving a High-Stakes Technical ProblemEasy

Tests ownership and judgment in solving a difficult technical problem under ambiguity, including prioritization, communication, and measurable results.

OwnershipDealing With AmbiguityGuy Carpenter
Django Architecture and ORMMedium

Tests backend framework understanding and how ORM abstractions map to SQL and PostgreSQL behavior.

databasetechnical discussionFrameworksGuy Carpenter
More Behavioral & Leadership questions with a free account
3
More topics1 question · ~8 min
Graph Coding ProblemMedium

Evaluates your ability to reason about graph problems and implement an efficient solution.

coding challengeGuy Carpenter

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