Top 29
Prep plan
Updated weekly · Last refresh Sep 16

American Express Engineering Manager Interview Questions

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

29questions
~5htotal time
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1
CodingStart here. 7 questions · ~69 min
Luhn Credit Card ValidationMedium
Practice

Validate a formatted card number with the Luhn checksum algorithm in O(n) time.

MathArraysStringsAmerican Express
Math Function Without OperatorsMedium
Practice

Compute truncated integer division for an Amex Rewards calculation using subtraction and bit shifting, without arithmetic division operators.

RecursionMathGreedyAmerican Express
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2
Execution4 questions · ~40 min
Migrate Monolith to MicroservicesHard

Plan a zero-downtime migration from a legacy monolith to microservices while managing risk, sequencing, and stakeholder pressure.

Trade-offsRoadmappingRisk AssessmentAmerican Express
Balance Debt Against Feature DeliveryMedium

Explain how you would balance technical debt reduction with feature delivery when stakeholders want visible progress but engineering risk is rising.

Trade-offsRisk AssessmentScope ManagementAmerican Express
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3
System Design3 questions · ~30 min
Diagnose Oracle Query AbuseMedium

Tests your ability to troubleshoot and mitigate database query abuse under production load.

database optimizationdatabase managementperformanceAmerican Express
Design Global Transaction CachingHard

Assesses your system design skills for low-latency caching in high-scale transaction processing.

scalabilitycachingAmerican Express
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4
Behavioral & Leadership13 questions · ~129 min
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5
More topics2 questions · ~20 min
American Express Business ModelMedium

Assesses your understanding of American Express's business model and cost drivers.

Business ModelFinancial AnalysisAmerican Express
Build vs Buy Technology ChoicesMedium

Assesses your decision-making framework for technology selection and long-term maintainability.

American Express
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