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Updated weekly · Last refresh Oct 17

Lam Research Software Engineer Interview Questions

The questions to prepare for a Lam Research Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~8htotal time
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1
CodingStart here. 11 questions · ~111 min
Transpose of a MatrixEasy
Practice

Transpose a rectangular matrix by converting each row into a column.

ArraysArray ManipulationMatrixLam Research
Convert Case in StringsEasy
Practice

Toggle ASCII letters between uppercase and lowercase while preserving digits, spaces, and symbols.

string manipulationLam Research
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2
Execution3 questions · ~30 min
Your Strengths and WeaknessesEasy

Give a specific, self-aware account of your strengths and weaknesses, supported by relevant examples and improvement actions.

Trade-offsSuccess CriteriaExecutionLam Research
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3
Security & Infrastructure11 questions · ~111 min
Mechanical Engineering FundamentalsMedium

Evaluates understanding of core mechanics used in engineering analysis.

project experiencedesignAnalysisLam Research
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4
Technical Fundamentals10 questions · ~101 min
Solid State Relay BasicsMedium

Evaluates your understanding of switching fundamentals and device operation.

technical knowledgeLam Research
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5
System Design10 questions · ~101 min
Safe Design for MaintenanceMedium

Evaluates design-for-maintainability thinking and practical engineering judgment.

Lam Research
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6
Behavioral & Leadership3 questions · ~30 min
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7
More topics2 questions · ~20 min
DOE and Parameter EffectsMedium

Evaluates your experimental design thinking and understanding of process interactions.

process improvementLam Research
Plasma Chamber Safe Shutdown State MachineHard

Tests your ability to design safety-focused control logic with correct states, transitions, and failure handling.

Decision MakingsafetyLam Research
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