Reddit DevOps Engineer Interview Questions

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

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PipelinesStart here. 4 questions · ~32 min

Discuss preferred container orchestration tools for running pipelines, and explain the trade-offs behind the choice.

Design for Viral Traffic SpikesHard

Tests system design for elasticity, reliability, and performance under sudden demand surges.

system designscalabilityarchitecture

Global Deployment for MicroservicesHard

Tests deployment architecture, rollout safety, and global latency considerations.

cloud infrastructurearchitecturemicroservices

Observability for Distributed SystemsHard

Tests observability strategy, instrumentation, and incident readiness across services.

monitoringdistributed systemsobservability

Execution7 questions · ~56 min

Tests database selection reasoning, performance trade-offs, and operational implications.

Capacity Planning for GrowthHard

Tests forecasting, scaling strategy, and operational planning to prevent performance regressions.

scalabilitycapacity planningResource Allocation

Root-Cause Analysis for LatencyHard

Tests structured troubleshooting, hypothesis-driven debugging, and measurable remediation.

Problem Solving

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Behavioral & Leadership6 questions · ~48 min

Owning a Production Outage ResponseMedium

Tests ownership during an AWS production outage, including diagnosis, escalation, communication, and post-incident improvement.

resilienceProblem SolvingOwnership

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