Top 50
Prep plan
Updated weekly · Last refresh Sep 11

YouTube Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 18 questions · ~179 min
Add Unsigned Int to Big NumberEasy
Practice

Add a nonnegative integer to a digit array representing a large YouTube view count without converting the entire number.

ArraysYouTube
Search in Bitonic ArrayMedium
Practice

Search a strictly bitonic array for a target using peak detection and binary search in O(log n) time.

ArraysSearchingYouTube
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2
Execution16 questions · ~159 min
Describe a Previous ProjectEasy

Describe a past engineering project with focus on ownership, stakeholder alignment, communication, and risk management.

CommunicationOwnershipYouTube
Mentoring a Teammate Through DeliveryEasy

Describe how you mentored a colleague or strengthened team capability while still delivering on an important engineering project.

Risk AssessmentScope ManagementYouTube
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3
SQL & Data Manipulation3 questions + 3 drills · ~60 min
4
System Design7 questions · ~70 min
Graphs: Shortest Cycle and Evaluate DivisionHard

Tests your ability to apply graph algorithms to common interview-style problems.

cycle detectionGraphsYouTube
Design a Service SiteHard

Evaluates your system design thinking for building and operating a service-oriented web site.

GraphsYouTube
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5
Behavioral & Leadership5 questions · ~50 min
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6
More topics1 question · ~10 min
HTTP vs HTTPSMedium

Assesses your understanding of web protocols and security implications.

NetworkinghttpYouTube
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.