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Samsung Semiconductor QA Engineer Interview Questions

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

38questions
~6htotal time
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1
CodingStart here. 6 questions · ~56 min
Maximum Subarray Using KadaneEasy
Practice

Compute the maximum contiguous subarray sum in O(n) time using Kadane's Algorithm.

Basic AlgorithmsDynamic ProgrammingArraysSamsung Semiconductor
Reverse Linked List ComplexityEasy
Practice

Reverse a singly linked list in place using pointer reassignment with O(n) time and O(1) extra space.

time complexityLinked ListsData StructuresSamsung Semiconductor
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2
SQL & Data Manipulation5 questions + 2 drills · ~67 min
Second Highest Trader SalaryEasy
Practice

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

SubqueriesRankingSortingSamsung Semiconductor
Customer Orders: LEFT vs INNER JOINEasy

Explain how INNER JOIN and LEFT JOIN differ, and when to use each for matched-only versus all-left-row analysis.

JoinsData WranglingGroup BySamsung Semiconductor
Database Normalization and IntegrityEasy

Tests understanding of schema design and data integrity principles.

normalizationdatabase designdata integritySamsung Semiconductor
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
Unify CRM and Google Analytics ViewHard
Practice
Practice drill

Merge CRM orders with GA events via an identity map to build a customer-level view using joins, window functions, and monthly rollups.

SubqueriesJoinsData WranglingArtefact
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3
Execution4 questions · ~37 min
Testing Across Agile and WaterfallMedium

Explain how you adapt QA execution across Agile and Waterfall, including planning, scope, risks, and success measures.

Trade-offsSuccess CriteriaScope ManagementSamsung Semiconductor
Choosing an SDLC Model in QAMedium

Tests understanding of SDLC and ability to align QA process to development approach.

AgilewaterfallsdlcSamsung Semiconductor
Test Plan for Ambiguous RequirementsHard

Tests QA strategy, risk-based thinking, and handling uncertainty in planning.

test planningScope ManagementSamsung Semiconductor
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4
Behavioral & Leadership23 questions · ~214 min
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The finish line: interview-readyComplete all 38 questions plus 2 hands-on drills to finish this plan.