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Amazon Lab126 Software Engineer Interview Questions

The questions to prepare for a Amazon Lab126 Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 14 questions · ~131 min
Convert String to JSONHard
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Implement a recursive-descent parser that converts a JSON string into nested Python dictionaries, lists, and primitive values.

string manipulationAmazon Lab126
Reverse a Singly Linked ListEasy
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Recently asked

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

CodingData StructuresAlgorithmsAmazon Lab126
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2
System Design12 questions · ~112 min
Vending Machine System DesignHard
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Design an ML-driven vending machine that predicts demand, optimizes stocking, and handles real-time failures at scale.

distributed systemsscalabilitydesignAmazon Lab126
Queue That Will Never FailHard
Recently asked

Evaluates reliability, failure modes, and robustness strategies for a core data structure.

failure managementAmazon Lab126
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3
Security & Infrastructure13 questions · ~122 min
Resistor CubeMedium
Recently asked

Tests your ability to reason about circuit behavior and solve structured electrical problems.

circuit designAmazon Lab126
Analog and Microwave CircuitsMedium
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Assesses your depth in RF/analog fundamentals and your ability to explain technical concepts clearly.

circuit designresearchAmazon Lab126
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4
Execution6 questions · ~56 min
Mechanical Testing for Tablets and E-ReadersMedium
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Evaluates your ability to translate product requirements into practical test approaches.

Testingproduct developmentAmazon Lab126
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5
Behavioral & Leadership4 questions · ~37 min
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6
More topics1 question · ~9 min
Overloading vs OverridingMedium
Recently asked

Tests your understanding of OOP behavior and method dispatch rules.

cultural fitAmazon Lab126
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