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Updated weekly · Last refresh Aug 30

Cloudflare Site Reliability Engineer Interview Questions

The questions to prepare for a Cloudflare Site Reliability Engineer interview. Questions from real interview reports rank first. Updated weekly.

38questions
~5htotal time
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1
CodingStart here. 4 questions · ~32 min
Automating Infrastructure with ScriptsMedium

Evaluates your practical automation skills for reducing operational toil.

InfrastructureAutomationscriptingCloudflare
Python vs Go Trade-offsMedium

Assesses your ability to choose appropriate languages for reliability, performance, and operations.

gopythonCloudflare
Optimizing a Memory-Intensive FunctionHard

Tests your ability to improve performance and resource usage in production-grade code.

performanceProgrammingCloudflare
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2
Security & Infrastructure13 questions · ~104 min
TCP vs UDP for Load BalancingMedium

Evaluates your understanding of transport protocols and their impact on traffic distribution.

load balancingCloudflare
Debugging Stalled ContainersMedium

Assesses your approach to isolating and diagnosing failures in containerized systems.

ContainersDebuggingCloudflare
Troubleshooting High Latency on LinuxMedium

Tests systematic troubleshooting and performance diagnosis on Linux for production reliability.

Performance TuninglinuxTroubleshootingCloudflare
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3
Behavioral & Leadership19 questions · ~152 min
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4
More topics2 questions · ~16 min
Balance Delivery and MaintainabilityHard

Explain how you deliver near-term business value while protecting system maintainability and managing stakeholder pressure.

Trade-offsRisk AssessmentScope ManagementCloudflare
Capacity Planning for Traffic SpikesMedium

Evaluates how you plan and respond to sudden load changes to maintain reliability.

scalabilitycapacity planningCloudflare

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