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TransUnion QA Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 4 questions · ~34 min
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

StringsfunctionspythonTransUnion
Implement a Basic Test CaseMedium

Tests your understanding of test structure, assertions, and writing maintainable automated tests.

Hash TablesArraysStringsTransUnion
Filewatcher and Code WritingMedium

Evaluates your ability to work with file monitoring concepts and implement supporting code.

CodingTransUnion
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2
Execution15 questions · ~126 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 AssessmentQualityTransUnion
Test Strategy for New FeatureEasy

Explain how you would define, prioritize, and organize test cases for a new feature while aligning on risk and scope.

Risk AssessmentScope ManagementQualityTransUnion
Decide What to AutomateEasy

Explain how you decide which tests to automate versus keep manual, balancing risk, cost, and long-term maintenance.

Trade-offsRisk AssessmentScope ManagementTransUnion
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3
Behavioral & Leadership30 questions · ~251 min
Proactively Improving QA ProcessMedium

Tests ownership and initiative in improving QA processes, plus influence and measurable impact on quality or delivery.

process improvementinitiativeOwnershipTransUnion
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4
More topics1 question · ~8 min
SQL JOIN Query WritingMedium

Tests your ability to write correct SQL joins for data validation and test setup.

sqlTransUnion
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Running Totals and Moving AveragesMedium
Practice
Practice drill

Calculate monthly credit utilization, running totals, and three-month moving averages for TransUnion customers.

Window FunctionssqlRunning TotalsTransUnionCNA
Top Customers by Sales RevenueEasy
Practice
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
SQL Duplicate Records QueryEasy
Practice
Practice drill

Use GROUP BY and HAVING to identify duplicated Grail assay sample identifiers and their record counts.

Group ByHavingAggregationsTransUnionAcrisureGrail
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.