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Updated weekly · Last refresh Aug 30

Uber QA Engineer Interview Questions

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

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1
Behavioral & LeadershipStart here. 11 questions · ~88 min
Late-Cycle Critical Defect EscalationMedium

Tests ownership and judgment when a QA engineer finds a severe defect late and must drive triage, communication, and release decisions.

Decision MakingOwnershipstarUber
Resolving a Complex Production BugEasy

Tests ownership during production incidents, structured root-cause analysis, and whether the candidate drives durable prevention after the immediate fix.

impactOwnershipDebuggingUber
Mentoring a Struggling Junior EngineerMedium

Tests how you mentor junior teammates through structured feedback, communication, and ownership for both growth and team outcomes.

MentorshipCommunicationLeadershipUber
Schema Validation and API CompatibilityMedium

Tests your ability to ensure API contract stability across versions and clients.

api testingUber
Build API Load Test FrameworkHard

Tests your ability to engineer load testing systems and produce trustworthy performance signals.

api testingUber
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2
More topics3 questions · ~24 min
Strict JSON Schema ValidationMedium

Tests your ability to design and implement robust schema validation logic.

json parsingData StructuresvalidationUber
Request Manipulation ToolsMedium

Assesses your familiarity with tools for crafting and manipulating requests for QA testing.

ToolsUber
JavaScript and SQL CodingEasy

Evaluates your ability to implement and reason about JavaScript logic and SQL queries accurately.

javascriptsqlUber

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
Calculate 30-Day User RetentionHard
Practice
Practice drill

Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.

Window FunctionsDate FunctionsAggregationsCurefitReachMobiIndeed
Weekly Signup Cohort RetentionHard
Practice
Practice drill

Calculate weekly retention by signup cohort using CTEs, joins, date truncation, and distinct user counts.

Window FunctionsDate FunctionsAggregationsBrexPostmaneToro
The finish line: interview-readyComplete all 14 questions plus 3 hands-on drills to finish this plan.