American Express Software Engineer interview experience

No offer

Hard

Positive

BengaluruPosted Oct 2025 · Candidate report, summarized by Dataford

My interview leaned hard on specific DSA and core CS topics, and it was tougher than I wanted at the time.

I started with a DSA question about finding the longest palindromic substring, then moved into database fundamentals—ACID properties in DBMS.

From there, the conversation turned to my resume and projects, where they asked me to explain what I had built. The last part dug into OOP concepts like constructors and destructors, which added a more theoretical edge compared to the coding-focused opening.

The overall feel was difficult and fairly structured around testing multiple distinct areas. I didn’t get an offer, and honestly it felt like they were looking for a very wide command of both

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