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Prep plan
Updated weekly · Last refresh Oct 17

National Grid QA Engineer Interview Questions

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

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1
ExecutionStart here. 18 questions · ~158 min
Test a New API EndpointEasy

Explain how you would test a new API endpoint, including coverage, risks, and clear exit criteria before release.

ToolsRisk AssessmentQualityNational Grid
Testing Across Agile and WaterfallMedium

Explain how you adapt QA execution across Agile and Waterfall, including planning, scope, risks, and success measures.

Trade-offsSuccess CriteriaScope ManagementNational Grid
Scale Test Automation CoverageMedium

Explain your experience with automation testing tools and how you would execute a broader automation strategy with clear success criteria and risk management.

Trade-offsSuccess CriteriaRisk AssessmentNational Grid
White-Box vs Black-Box TestingEasy

Explain the difference between white-box and black-box testing and when each is appropriate in an execution context.

ToolsSuccess CriteriaQualityNational Grid
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2
More topics4 questions · ~35 min
Palindrome Function ImplementationEasy
Practice

Determine whether a string reads the same forward and backward using a two-pointer scan.

RecursionStringsTwo PointersNational Grid
Testing Methodologies You UseMedium

Tests breadth of QA/testing approaches and practical experience applying them.

CommunicationLeadershipOwnershipNational Grid
Using the V-Model in TestingMedium

Evaluates your understanding of the V-model and how it maps development activities to test phases.

TestingNational Grid
Resolve a Challenging BugMedium

Tests root-cause analysis skills and effectiveness of your bug resolution process.

challengesNational Grid

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