Top 27
Prep plan
Updated weekly · Last refresh Aug 30

Microsoft QA Engineer Interview Questions

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

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1
CodingStart here. 11 questions · ~117 min
Detect Duplicates in ArrayEasy
Practice

Use a hash set to detect whether an integer array contains any duplicate in O(n) time.

Hash TablesArraysMicrosoft
Reverse Linked List In-PlaceEasy
Practice
Recently asked

Reverse a singly linked list in place by rewiring next pointers in one pass.

Linked ListsAlgorithmsMicrosoft
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersMicrosoft
Validate Binary Search TreeEasy
Practice

Problem At Dropbox, a service stores ordered values in a binary tree and needs to verify that the structure satisfies binary search tree rules. Given the r...

RecursionSearchingTreesMicrosoft
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2
Execution15 questions · ~159 min
Prioritize Bugs for ReleaseMedium

Explain how you would triage and prioritize bugs before a release when severity, customer impact, and schedule pressure conflict.

Risk AssessmentPrioritizationMicrosoft
Disagreeing on Safety-Critical TradeoffsEasy
Recently asked

Describe how you handled a disagreement with an engineer or safety expert when the decision involved delivery pressure and safety tradeoffs.

Trade-offsRisk AssessmentScope ManagementMicrosoft
Escalate and Contain Critical BugEasy
Recently asked

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

Success CriteriaRisk AssessmentQualityMicrosoft
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3
More topics1 question · ~11 min
Reporting a High-Impact BugEasy

Tests QA ownership, bug reporting clarity, and how effectively you drive action on a difficult defect.

Stakeholder ManagementCommunicationOwnershipMicrosoft
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