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Updated weekly · Last refresh Aug 30

Viber QA Engineer Interview Questions

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

29questions
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1
CodingStart here. 4 questions · ~35 min
Reverse a String in PythonEasy
Practice

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

StringsfunctionspythonViber
Binary Search Implementation and ComplexityEasy

Explain how binary search works on a sorted array and why its time complexity is O(log n).

MathArraysSearchingViber
Login Test CaseEasy

Tests ability to design basic test cases and validate expected behavior.

Hash TablesArraysStringsViber
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2
Execution8 questions · ~70 min
Escalate and Contain Critical BugEasy

Describe how you handled a critical bug by assessing risk, aligning stakeholders, defining severity, and driving containment to resolution.

Success CriteriaRisk AssessmentQualityViber
Diagnose Production FailuresHard

Tests incident triage, debugging approach, and ability to restore quality quickly.

Rollback PlanTrade-offsRisk AssessmentViber
How to Test Viber MessagingMedium

Tests end-to-end test design for messaging flows, including regressions and edge cases.

Success CriteriaRisk AssessmentScope ManagementViber
Test Plan for Viber FeatureMedium

Tests structured test planning across functional, regression, and risk areas for Viber releases.

Success CriteriaRoadmappingScope ManagementViber
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3
Behavioral & Leadership17 questions · ~148 min
Contributing Beyond Your Assigned ScopeEasy

Tests ownership, teamwork, communication, and mentorship through a concrete example of helping a team succeed beyond individual delivery.

CommunicationLeadershipOwnershipViber
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