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Updated weekly · Last refresh Oct 30

GitHub Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 15 questions · ~147 min
Debug an Issue in CodeMedium
Recently asked

Evaluates your debugging approach, hypothesis building, and code-reading skills.

DebuggingGitHub
Write a NodeJS AddonHard
Practice
Recently asked

Match repository paths against CODEOWNERS-style globs using segment dynamic programming and deterministic precedence rules.

GitHub
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2
Execution9 questions · ~88 min
Design a Scalable ApplicationEasy
Recently asked

Explain how you would design a scalable application, including trade-offs, risks, stakeholder needs, and how you define success.

Trade-offsRisk AssessmentScope ManagementGitHub
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3
System Design14 questions · ~137 min
Domain-Driven Design OverviewMedium
Recently asked

Evaluates your understanding of DDD concepts and when to apply them in software design.

architectureGitHub
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4
Behavioral & Leadership4 questions · ~39 min
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5
More topics8 questions · ~78 min
Design Real-Time Feature PipelineHard
Recently asked

Design a real-time feature pipeline processing 120K events/sec into low-latency feature tables and warehouse models with replay and quality controls.

InfrastructureStream ProcessingOrchestrationGitHub
API Endpoints, JSON, and CachingMedium
Recently asked

Assesses your ability to implement and optimize API behavior with correct data handling and caching.

apicachingGitHub
Production-Ready Security MeasuresHard
Recently asked

Evaluates your security mindset and practical knowledge of OWASP-aligned protections.

GitHub
Python vs Java DifferencesEasy
Recently asked

Assesses your understanding of language tradeoffs and engineering fundamentals.

comparisonprogramming languagesGitHub
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Retention by ChannelMedium
Practice
Practice drill

Calculate 30-day retention rates for users acquired through paid search and organic search.

RetentionJoinsCase WhenGitHub
Monthly Active Users by CampaignMedium
Practice
Practice drill

Use PostgreSQL joins and monthly aggregation to count distinct active users from a specific signup campaign.

Date FunctionsJoinscampaign performanceGitHub
PR Merge Time After First ReviewMedium
Practice
Practice drill

Calculate the average elapsed time between each pull request's first review and merge event.

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