Reddit Site Reliability Engineer Interview Questions

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

12questions

~2htotal time

Track your progressSign up free to work through all 12 questions and resume where you left off.

CodingStart here. 3 questions · ~25 min

Evaluates your approach to authentication session management, reliability, and security considerations.

Production-Ready Cache ProtocolHard

Evaluates your ability to design and harden a networked caching service with correct protocol and connection handling.

Game Scoring System DesignMedium

Assesses your system design skills for modeling data flows, correctness, and scalability in a scoring use case.

system design

Execution5 questions · ~41 min

Evaluates how you drive incident learning, accountability, and actionable follow-ups.

Consistency Model Trade-offsMedium

Evaluates your understanding of consistency, availability, and correctness trade-offs in distributed systems.

Trade-offsdistributed databases

Mitigating Cascading FailuresHard

Assesses advanced reliability techniques to prevent and contain failure propagation.

resiliencemicroservices

Defining SLOs and SLIsMedium

Assesses your ability to set measurable reliability targets and operationalize them for a new service.

More Execution questions with a free account

Create a free account to unlock this list and practice real interview questions.

Behavioral & Leadership4 questions · ~33 min

Leading During a Critical OutageHard

Evaluates your incident leadership, coordination, and effectiveness under high-stakes pressure.

Leadership

More Behavioral & Leadership questions with a free account

The finish line: interview-readyComplete all 12 questions to finish this plan.