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Koch Interview Questions

The questions to prepare for Koch interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 6 questions + 2 drills · ~76 min
SQL Window Functions for Rolling MetricsMedium
Practice

Calculate Snapmint's 30-day rolling average of daily loan defaults using aggregation and window functions.

Data AnalysisAggregationsKoch
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
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
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2
Coding6 questions · ~56 min
Count Characters in a StringEasy
Practice

Count each character in a string using a dictionary while preserving case and including spaces and punctuation.

CodingBasic AlgorithmsArraysKoch
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3
Pipelines7 questions · ~66 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityKoch
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4
Strategy3 questions · ~28 min
Tell Me About YourselfEasy

Craft a concise self-introduction that highlights fit, communication style, and relevance for an Account Executive role.

brand cultureBusiness AcumenCompetitive AnalysisKoch
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5
Execution6 questions · ~56 min
Your Strengths and WeaknessesEasy

Give a specific, self-aware account of your strengths and weaknesses, supported by relevant examples and improvement actions.

Trade-offsSuccess CriteriaExecutionKoch
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6
Metrics3 questions · ~28 min
Diagnose a Metric Drop After LaunchMedium

Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.

Lagging IndicatorsLeading IndicatorsDiagnosisKoch
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7
More topics19 questions · ~178 min
Depreciation Impact on StatementsMedium

Trace a $10 depreciation increase through net income, cash flow, PP&E, retained earnings, and the balance sheet.

Accounting FundamentalsFinancial StatementsdepreciationKoch
Choose Classification MetricsMedium

Choose the right classification metrics, and explain when precision, recall, and F1 score matter most.

F1 ScorePrecisionRecallKoch
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.