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Adecco General Staffing QA Engineer Interview Questions

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

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1
CodingStart here. 6 questions · ~65 min
Detect Cycle in Linked ListEasy
Practice

Use Floyd’s two-pointer algorithm to determine whether a singly linked list contains a cycle.

Hash TablesLinked ListsTwo PointersAdecco General Staffing
First Non-Repeating CharacterEasy
Practice

Find the first non-repeating character in a string using frequency counting and a second pass in O(n) time.

Hash TablesStringsSearchingAdecco General Staffing
In-Place Linked List ReversalEasy
Practice

Reverse a singly linked list in place using constant extra space and return its new head.

coding challengeLinked ListsData StructuresAdecco General Staffing
Searching in a Binary Search TreeEasy

Explain how BST search works by comparing the target at each node and analyze best, average, and worst-case time complexity.

time complexitySearchingTreesAdecco General Staffing
Queue Using Two StacksMedium

Tests core data structure understanding and implementation correctness.

StackQueueabstractionAdecco General Staffing
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2
Behavioral & Leadership11 questions · ~120 min
Isolating a Hard-to-Reproduce BugMedium

Tests ownership and structured debugging under ambiguity, including how you isolate intermittent embedded issues and improve team diagnosis afterward.

CommunicationProblem SolvingDebuggingAdecco General Staffing
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3
More topics2 questions · ~22 min
Designing a Test SuiteMedium

Tests your approach to building effective QA test suites for production-like systems.

test planningRoadmappingScope ManagementAdecco General Staffing
Release Readiness CriteriaMedium

Tests your judgment and quality gates for production release decisions.

Launch PlanningTrade-offsSuccess CriteriaAdecco General Staffing

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