Amex Backend Engineer Interview Questions

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

22questions

~3htotal time

Track your progressSign up free to work through all 22 questions and resume where you left off.

CodingStart here. 9 questions · ~81 min

Compute the minimum number of coins needed for a Tekion payment amount using bottom-up dynamic programming.

Java 8 Streams in ProductionEasy

Explain how Java 8 Streams improve collection-processing readability and when to use them versus loops in production code.

Hash TablesArraysStrings

Amex

Greedy vs Dynamic ProgrammingMedium

Evaluates understanding of algorithmic trade-offs and when each approach applies.

Dynamic ProgrammingAlgorithms

Amex

Pattern Matching to Improve ReadabilityMedium

Assesses ability to apply modern language features to improve maintainability.

java

Amex

More Coding questions with a free account

System Design11 questions · ~100 min

Tests system design for reliable, high-scale notification delivery.

Peak Season Concurrency DesignHard

Tests system design skills for scaling backend services under peak transaction load.

system designscalabilityconcurrency

Amex

ACID Transaction Processing at ScaleHard

Tests ability to design scalable transactional systems with strong consistency guarantees.

scalability

Amex

More System Design questions with a free account

Create a free account to unlock this list and practice real interview questions.