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Updated weekly · Last refresh Sep 9

Leidos QA Engineer Interview Questions

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

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

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

SubqueriesRankingSelf-JoinsLeidos
Troubleshooting Missing Rows with JoinsEasy
Recently asked

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

SubqueriesJoinsData WranglingLeidos
Discrepancy Query Between SourcesHard
Practice
Practice drill

Identify missing, duplicated, and mismatched records between two source tables using full reconciliation logic.

SubqueriesJoinsData WranglingDexian Signature Consultants
SQL Value SwappingMedium
Practice
Practice drill

Swap two column values for approved rows while preserving unaffected records and returning before-and-after values.

SubqueriesJoinsData ManipulationNeenOpal
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2
Execution5 questions · ~43 min
Prioritize Competing QA DeadlinesEasy
Recently asked

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

Trade-offsRoadmappingScope ManagementLeidos
Prioritize Tests Using Risk-Based TestingEasy
Recently asked

Explain how you would prioritize test cases by risk when time and coverage are both constrained.

Trade-offsRisk AssessmentScope ManagementLeidos
End-to-End Login TestingMedium
Recently asked

Tests end-to-end test planning across UI, backend verification, and failure handling.

quality assurancedata integrityLeidos
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3
Coding3 questions · ~26 min
UI Selenium Locators ApproachHard
Recently asked

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

seleniumtechnical interviewsqlLeidos
Robust XPath With Dynamic IDsMedium
Recently asked

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

StringsTestingFrameworksLeidos
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4
Behavioral & Leadership9 questions · ~77 min
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5
More topics1 question · ~9 min
Handling Async and Dynamic WaitsMedium
Recently asked

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

TestingFrameworksLeidos
The finish line: interview-readyComplete all 22 questions plus 2 hands-on drills to finish this plan.