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Updated weekly · Last refresh Oct 17

CME Group Data Engineer Interview Questions

The questions to prepare for a CME Group Data Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
PipelinesStart here. 4 questions · ~33 min
Data Validation in ETL PipelinesMedium

Approach for validating ETL data with schema, business rule, and pipeline-level checks.

strategiesETLdata validationCME Group
Design High-Throughput Event PipelineHard

Design a real-time event pipeline that can handle millions of events per second with sub-second latency.

data pipelineevent processinglatencyCME Group
Trade Data Parsing with SparkHard

Tests ability to design and implement scalable Spark pipelines for large trade datasets.

data processingsparkCME Group
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2
Behavioral & Leadership5 questions · ~41 min
Troubleshooting a High-Stakes Data IssueMedium

Tests ownership in diagnosing a data issue, communicating clearly under pressure, and driving a durable fix with measurable impact.

CommunicationOwnershipDealing With AmbiguityCME Group
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3
More topics4 questions · ~33 min
Zero-Downtime PostgreSQL Schema MigrationsHard

Explain how to run PostgreSQL schema migrations without downtime while preserving compatibility, integrity, and performance.

schema migrationsdatabase managementproduction environmentCME Group
Expected Value for Biased CoinMedium

Tests probability reasoning and expected value calculations under game constraints.

probabilityCME Group
Time Complexity Pair-Sum AlgorithmHard

Evaluates algorithm design and time complexity tradeoffs for large-scale data problems.

time complexityAlgorithmsCME Group
Debugging SQL Joins and AggregatesEasy

Assesses practical SQL debugging skills and validation of query correctness.

DebuggingsqlCME Group

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL, Tableau, and Modeling ChoicesMedium
Practice
Practice drill

Rank active CME Group employees by current salary using joins and ROW_NUMBER for a Tableau compensation dashboard.

sqlCME Group
SQL: Compare Test Runs by DateMedium
Practice
Practice drill

Compare consecutive test run statuses and durations to identify regressions, fixes, unchanged tests, and newly observed tests.

Window FunctionsLag/LeadDate FunctionsCME Group
Optimize a Slow SQL QueryHard
Practice
Practice drill

Rewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.

database optimizationJoinsData WranglingAmeripriseEEltro Cyberchrome PrivateEnergyHub
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