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Updated weekly · Last refresh Aug 30

Columbia Bank Software Engineer Interview Questions

The questions to prepare for a Columbia Bank Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

22questions
~4htotal time
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1
CodingStart here. 8 questions · ~79 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersColumbia Bank
Binary Tree Level Order TraversalEasy
Practice

Traverse a binary tree level by level using a queue-based breadth-first search.

QueueTreesColumbia Bank
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2
Execution3 questions · ~29 min
Security Considerations in Solution DesignMedium

Explain how you incorporate security into solution design while balancing delivery, architecture trade-offs, and stakeholder expectations.

Trade-offsSuccess CriteriaRisk AssessmentColumbia Bank
Bank App for MillionsHard

Tests your system design skills for scale, reliability, and performance in a banking context.

Trade-offsRoadmappingRisk AssessmentColumbia Bank
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3
Behavioral & Leadership7 questions · ~69 min
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4
More topics4 questions · ~39 min
Cloud AI Deployment Pipeline ExperienceMedium

Discuss experience building cloud-based AI pipelines, including orchestration, processing patterns, infrastructure choices, and data quality controls.

InfrastructureToolsQualityColumbia Bank
Summarizing Static Routes in BGPMedium

Assesses your practical knowledge of BGP route summarization configuration.

Columbia Bank
Microservices Architecture ApproachHard

Tests distributed systems design skills, service boundaries, and operational considerations.

InfrastructureOrchestrationDependenciesColumbia Bank
Router on a Stick ConceptMedium

Evaluates your understanding of VLAN trunking and inter-VLAN routing fundamentals.

NetworkingColumbia Bank
The finish line: interview-readyComplete all 22 questions to finish this plan.