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American Express DevOps Engineer Interview Questions

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

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1
CodingStart here. 7 questions · ~79 min
Simplify Nested Path StringMedium
Practice

Refactor path normalization logic by using a stack to simplify slash-separated path segments in linear time.

Hash TablesArraysStringsAmerican Express
Aggregate Error Codes from LogsEasy
Practice

Parse log lines, extract matching error codes from strings, and count occurrences with a hash table in one pass.

Hash TablesArraysStringsAmerican Express
Stateful Services in Auto-Scaling ContainersMedium

Explain how to manage stateful applications in containerized auto-scaling systems using partitioning, sticky routing, queues, and externalized state.

ArraysGreedyAmerican Express
Trace Distributed Transaction LatencyMedium

Explain how to reconstruct and analyze a distributed transaction path using graphs, hash maps, and targeted search to isolate latency spikes.

Hash TablesSortingGraphsAmerican Express
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2
Execution6 questions · ~67 min
Stateful Apps in Auto-Scaling ContainersMedium

Explain how to run stateful workloads safely in containerized auto-scaling systems while balancing resilience, scaling, and rollback risk.

InfrastructureTrade-offsRisk AssessmentAmerican Express
Monitor Microservices Without Alert FatigueMedium

Design a monitoring and alerting approach for microservices that reduces noise while still catching customer-impacting failures.

Trade-offsSuccess CriteriaRisk AssessmentAmerican Express
Handle a Severe Production OutageEasy

Describe your approach to managing a major production outage, restoring service, and running a disciplined RCA afterward.

Trade-offsSuccess CriteriaRisk AssessmentAmerican Express
Real-Time AWS Cost Anomaly MonitoringHard

Evaluates your approach to real-time cost anomaly detection and operational monitoring across large AWS estates.

awsAmerican Express
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