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COLSA Interview Questions

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

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1
CodingStart here. 13 questions · ~117 min
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsCOLSA
Palindrome String FunctionEasy
Practice

Use two pointers to determine whether a PenFed member-note string reads identically forward and backward.

RecursionMathStringsCOLSA
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2
Execution17 questions · ~153 min
Project Challenges and SolutionsEasy

Describe an embedded project challenge, how you mitigated risk, managed stakeholders, and made trade-offs to deliver.

Trade-offsRisk AssessmentScope ManagementCOLSA
Prioritize Across Competing Data ProjectsEasy

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

Trade-offsRoadmappingScope ManagementCOLSA
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3
Pipelines12 questions · ~108 min
Design Scalable Pipeline InfrastructureHard

Design the core pipeline infrastructure for a new project, with attention to orchestration, data quality, idempotency, and future scale.

InfrastructureToolsQualityCOLSA
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4
Behavioral & Leadership5 questions · ~45 min
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5
More topics3 questions · ~27 min
Drone Control System DesignHard

Tests end-to-end system design for embedded and real-time control software.

RetrievalModel ServingRecommendation SystemsCOLSA
Aligning Analysis With ObjectivesEasy

Tests goal alignment and prioritization of analysis work to support measurable business outcomes.

EstimationCompetitive AnalysisGrowth StrategyCOLSA
DoD Cybersecurity ExperienceMedium

Evaluates your hands-on background supporting DoD security requirements and operational environments.

COLSA
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