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American Express Solutions Architect Interview Questions

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

35questions
~6htotal time
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1
CodingStart here. 33 questions · ~316 min
Shortest Path in Review GraphEasy
Practice

Use BFS with a queue on an undirected graph to find the shortest path length between two nodes.

Hash TablesQueueGraphsAmerican Express
SQL vs NoSQL Data ModelingEasy

Explain how to choose between relational and non-relational data models based on access patterns, consistency, and scale.

Hash TablesArraysGraphsAmerican Express
Caching and Queueing at ScaleMedium

Explain how caching and queues improve throughput, and discuss ordering, retries, backpressure, and failure handling.

Hash TablesQueueHeapAmerican Express
Card Data Encryption StrategyMedium

Explain how to model encryption, token generation, and lookup flows for stored card data using deterministic mappings and secure separation.

Hash TablesArraysStringsAmerican Express
Microservice Communication PatternsMedium

Explain graph-based service dependencies, queue-driven async messaging, API communication, and networking trade-offs in microservices.

Hash TablesQueueGraphsAmerican Express
API Input Validation and SanitizationMedium

Explain how to prevent common API vulnerabilities using input validation, output encoding, and safe lookup patterns.

Hash TablesArraysGraphsAmerican Express
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2
More topics2 questions · ~19 min
Separation of Data CriteriaMedium

Assesses your approach to data partitioning, isolation, and risk management for transaction systems.

American Express
Security Architecture Interview FocusMedium

Evaluates your ability to articulate and justify security architecture choices for enterprise payment environments.

security architectureAmerican Express

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