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Top 11
Prep plan
Updated weekly · Last refresh Aug 30

Optum QA Engineer Interview Questions

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

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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~65 min
Finding Duplicate RecordsEasy
Practice

Find duplicate customer emails using GROUP BY and HAVING in PostgreSQL.

Group ByHavingAggregationsOptum
Data Integrity in Migration ValidationMedium

Explain how to preserve data integrity during a large database migration using reconciliation queries, joins, CTEs, and transaction controls.

data migrationdatabasesdata integrityOptum
Explain SQL Join TypesEasy

Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.

JoinsData WranglingGroup ByOptum
Validating Large DatasetsMedium

Assesses approaches for validating data quality at scale.

large datasetsdata validationdata integrityOptum
SQL Join PerformanceMedium

Assesses understanding of SQL joins and performance tradeoffs.

JoinssqlOptum
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
SQL Name Formatting QueryEasy
Practice
Practice drill

Use PostgreSQL string functions to convert full names into a Last, First display format.

sql queryOptum
2
Behavioral & Leadership5 questions · ~45 min
Gathering Requirements Under AmbiguityEasy

Tests requirements gathering in an ambiguous setting, including stakeholder alignment, communication, and ownership of a clear final scope.

Stakeholder ManagementCommunicationOwnershipOptum
Prioritizing Under a Tight DeadlineMedium
Recently asked

Tests prioritization under pressure, including trade-off judgment, stakeholder alignment, and ownership of outcomes.

project experiencetime managementPrioritizationOptum
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3
More topics1 question · ~9 min
Automated Testing Framework ExperienceEasy

Tests your familiarity with automation frameworks and how you structure maintainable tests.

ArraysStringsOptum

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The finish line: interview-readyComplete all 11 questions plus 2 hands-on drills to finish this plan.