Amazon Lab126 QA Engineer Interview Questions

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

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CodingStart here. 15 questions · ~154 min

Detect whether a linked list contains a cycle using Floyd's fast and slow pointer algorithm in O(n) time and O(1) space.

Prime Check With Bit ManipulationMedium

Practice

Check whether an integer is prime, then swap two binary bit positions using constant-space bit manipulation.

Bit Manipulationprime number

Amazon Lab126

First Non-Repeated CharacterEasy

Practice

Use a hash table frequency count and a second pass to return the first non-repeated character in a string.

Hash Tablesfrequency countStrings

Amazon Lab126

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Execution10 questions · ~102 min

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

Architecture of Wireless OTA MeasurementsHard

Evaluates your technical understanding of wireless systems and your approach to OTA measurement analysis.

Amazon Lab126

Test a Component in Distributed SystemsMedium

Assesses your approach to validating QA for distributed system interactions and dependencies.

distributed systemsTesting

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Behavioral & Leadership19 questions · ~195 min

High-Pressure Decision With Incomplete InformationMedium

Tests prioritization under pressure: making a high-stakes call with ambiguity, owning trade-offs, and aligning stakeholders quickly.

LeadershipOwnershipDealing With Ambiguity

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