American Express

Software Engineer Interview Experience - India

September 29, 2025

Neutral ExperienceNo Offer

Process

Overall, the interview process was smooth. The interview itself was friendly.

I was asked questions based on my resume, as well as LeetCode medium questions.

There were also a few questions on some cybersecurity attacks and a few questions on Kafka, stemming from my project experience.

Questions

Longest Substring without Repeating Characters

Interview Statistics

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

Success Rate

18%

Pass Rate

American Express's interview process for their Software Engineer roles in India is very selective, failing most engineers who go through it.

Experience Rating

Positive57%

Neutral30%

Negative13%

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

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