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Updated weekly · Last refresh Aug 30

dunnhumby Site Reliability Engineer Interview Questions

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

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1
ExecutionStart here. 9 questions · ~72 min
Zero-Downtime Deployment StrategyMedium

Explain your approach to rolling updates, canary releases, and zero-downtime deployments with clear rollback criteria and stakeholder alignment.

canary releaseszero downtimerolling updatesdunnhumby
Choose Cloud Scaling StrategyMedium

Explain horizontal vs vertical scaling in cloud environments and how you would choose between them for a production service.

horizontal scalingvertical scalingcloud scalingdunnhumby
Monitor and Alert on LatencyMedium

Tests observability practices for latency SLOs, alerting, and actionable signals.

monitoringalertingperformancedunnhumby
Kubernetes Deployment ManagementMedium

Assesses your understanding of deployment mechanics and reliability implications in Kubernetes.

kubernetescontainer orchestrationdunnhumby
Handle Intermittent Database DegradationHard

Evaluates diagnostic approach and mitigation strategies for database performance issues.

databaseTroubleshootingdunnhumby
Monolith vs Microservices ReliabilityMedium

Tests your understanding of reliability tradeoffs across architectural styles.

architecturemicroservicesdunnhumby
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2
Behavioral & Leadership6 questions · ~48 min
Handling a Critical Production IncidentMedium

Tests ownership and prioritization under pressure during a high-severity production incident, including communication and recovery discipline.

resilienceproduction issuesOwnershipdunnhumby
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3
More topics1 question · ~8 min
Troubleshoot Network at Application LayerMedium

Evaluates your ability to map symptoms to layers and troubleshoot connectivity issues.

dunnhumby

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