Top 25
Prep plan
Updated weekly · Last refresh Aug 30

Crowdstrike Data Engineer Interview Questions

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

25questions
~4htotal time
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1
CodingStart here. 3 questions · ~26 min
Merge Two Sorted Linked ListsEasy
Practice

Merge two sorted singly linked lists into one sorted list by relinking existing nodes.

RecursionLinked ListsSortingCrowdstrike
Python Coding Test ExpectationsMedium

Tests expectations for core Python coding skills relevant to data engineering at CrowdStrike.

Hash TablesArraysSortingCrowdstrike
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2
Pipelines9 questions · ~78 min
Explain ETL in Data EngineeringEasy

Explain the ETL process, why it matters, and how it fits into a practical data pipeline.

ETLOrchestrationQualityCrowdstrike
Data Quality in ML PipelinesMedium

Approach for maintaining high quality data across ML pipelines, from ingestion through feature generation and model consumption.

Data QualityInfrastructureData WranglingCrowdstrike
Design Real-Time Sensor Event PipelineHard

Design a real-time pipeline for sensor events that transforms data and feeds a UI with low latency.

Stream ProcessingOrchestrationDependenciesCrowdstrike
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3
SQL & Data Manipulation6 questions + 3 drills · ~82 min
Structured vs Unstructured Data BasicsEasy

Explain how structured and unstructured data differ in format, storage, and how easily they can be queried with SQL.

Data WranglingETLCrowdstrike
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualityCrowdstrike
Optimizing Slow Queries at ScaleHard

Explain how to diagnose and optimize a slow PostgreSQL query on large Apidel Technologies datasets.

SubqueriesJoinsData WranglingCrowdstrike
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
Resolve Conflicting Customer AttributesMedium
Practice
Practice drill

Use joins, CTEs, and row ranking to resolve conflicting customer profile values across ACME House systems.

JoinsData WranglingQualityRamsey SolutionsACME House
Reconcile Conflicting Invoice TotalsMedium
Practice
Practice drill

Reconcile billing and ERP invoice totals using joins, a CTE for latest snapshots, and CASE-based discrepancy classification.

JoinsData WranglingQualityLiterati
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4
Behavioral & Leadership7 questions · ~61 min
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The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.