Reddit Security Engineer Interview Questions

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

12questions

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PipelinesStart here. 9 questions · ~72 min

Tests your ability to perform end-to-end threat modeling for AI tools handling sensitive data.

Tests your understanding of agent risk controls, abuse prevention, and safe tool-use patterns.

Eliminating Systemic Security DebtMedium

Tests your approach to measuring, prioritizing, and driving down security debt across teams and services.

strategies

Threat Modeling Third-Party APIs and PluginsHard

Tests your ability to model trust boundaries, supply-chain risks, and integration-specific threats.

LLM Feature Security Review ProcessMedium

Tests your ability to define secure review gates for LLM-integrated features in a large production environment.

security review

Detect and Block Malicious UGCHard

Tests your ability to design scalable detection, enforcement, and feedback loops for UGC abuse prevention.

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Behavioral & Leadership3 questions · ~24 min

Explaining Security Risk to StakeholdersMedium

Tests influence without authority by assessing how you translate security risk for non-security stakeholders and drive adoption of a recommendation.

Influence Without AuthorityStakeholder ManagementCommunication

Pushing Back on Risky RequirementsEasy

Tests conflict resolution and influence when product goals conflict with engineering stability and long-term architecture.

Conflict ResolutionStakeholder ManagementCommunication

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