American Express

Software Engineer Interview Experience - Phoenix, Arizona

October 29, 2025

Positive ExperienceGot Offer

Process

I interviewed with them 3 times for 3 different teams and got 2 out of 3 offers. I decided not to go through with them because I accepted an offer from a different company.

The ones with offers had me answer mostly technical and behavioral questions, along with a coding question. The one I didn’t get an offer for had me solve a riddle to see my thought process.

Questions

Key factors to object-oriented programming; how to find counterfeit coins on a scale.

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Interview Statistics

The following metrics were computed from 40 interview experiences for the American Express Software Engineer role in Phoenix, Arizona.

Success Rate

50%

Pass Rate

American Express's interview process for their Software Engineer roles in Phoenix, Arizona is fairly selective, failing a large portion of engineers who go through it.

Experience Rating

Positive68%

Neutral15%

Negative18%

Candidates reported having very good feelings for American Express's Software Engineer interview process in Phoenix, Arizona.

American Express Interview Questions

Minimum Deletions to Make Character Frequencies Unique

Medium

Given a string, find the minimum number of characters you must delete so that all remaining character frequencies are unique. No two characters can have the same frequency.

ArraysGreedy Algorithms

Maximum Equal Frequency

Hard

Given an array of numbers, find the longest prefix where removing exactly one element makes all remaining element frequencies equal. Return the length of this prefix.

ArraysSliding WindowsGreedy Algorithms

Find a Value of a Mysterious Function Closest to Target

Hard

You're given a mysterious function and a target value. Find an input value to the function that produces an output closest to the target.

ArraysSliding WindowsBit Manipulation