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Updated weekly · Last refresh Nov 7

Leidos QA Engineer Interview Questions

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

29questions
~4htotal time
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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~54 min
Second Highest Without AggregatesHard
Practice

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsLeidos
Troubleshooting Missing Rows with JoinsEasy

Explain how INNER JOIN and LEFT JOIN affect missing records and when to use each while debugging data mismatches.

SubqueriesJoinsData WranglingLeidos
SQL Window Functions Moving AverageMedium
Practice
Recently asked
Practice drill

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlEEvalueserveSShyena Tech YarnsAATB Financial
SQL for User RetentionMedium
Practice
Recently asked
Practice drill

Measure monthly user retention by signup cohort using date calculations and aggregated activity.

Window FunctionsDate FunctionsCTEsGoogleLeidosCConstellation Technologies
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2
Execution6 questions · ~50 min
Prioritize Competing QA DeadlinesEasy

Explain how you prioritize QA work across competing deadlines while balancing risk, impact, and stakeholder expectations.

Trade-offsRoadmappingScope ManagementLeidos
Prioritize Bugs for ReleaseMedium

Explain how you would triage and prioritize bugs before a release when severity, customer impact, and schedule pressure conflict.

Risk AssessmentPrioritizationLeidos
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3
Coding3 questions · ~25 min
UI Selenium Locators ApproachHard

Tests ability to design reliable UI automation using robust locator strategies.

seleniumtechnical interviewsqlLeidos
Robust XPath With Dynamic IDsMedium

Tests XPath expertise and ability to build stable locators for reliable Selenium tests.

StringsTestingFrameworksLeidos
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4
Technical Fundamentals5 questions · ~42 min
Handling Async and Dynamic WaitsMedium

Tests ability to prevent flaky tests using synchronization and wait strategies.

TestingFrameworksLeidos
Test Automation Frameworks and CI/CDMedium

Assesses familiarity with test frameworks and CI/CD pipelines.

test automationCI/CDtechnical experienceLeidos
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5
Behavioral & Leadership11 questions · ~93 min
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The finish line: interview-readyComplete all 29 questions plus 2 hands-on drills to finish this plan.