ETS Software Engineer Interview Questions

The questions to prepare for a ETS Software Engineer interview. Questions from real interview reports rank first. Updated daily.

35questions

~5htotal time

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CodingStart here. 11 questions · ~91 min

Compare arrays and linked lists by memory layout, access cost, and update performance, and explain when each is the better choice.

Optimizing a Slow ApplicationMedium

Tests performance troubleshooting, measurement, and targeted optimization strategies.

Hash TablesArraysSorting

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Execution5 questions · ~41 min

Resolving User-Reported BugsMedium

Tests bug triage, reproduction, root-cause analysis, and verification before release.

Success CriteriaRisk AssessmentQuality

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Handling Performance IssuesHard

Tests structured performance investigation, mitigation, and validation of improvements in production.

Trade-offsSuccess CriteriaRisk Assessment

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Behavioral & Leadership15 questions · ~123 min

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More topics4 questions · ~33 min

Tests understanding of JVM memory management and performance implications.

Designing User AuthenticationHard

Tests secure authentication design, threat awareness, and practical implementation choices for user access.

InfrastructureToolsQuality

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Multithreading ConceptsMedium

Tests understanding of concurrency, performance implications, and correctness concerns in software systems.

InfrastructureTools

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Java vs C# DifferencesEasy

Tests language fundamentals and practical differences that affect development.

Stakeholder ManagementCommunication

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