American Express Data Scientist interview experience

No offer

Medium

Positive

Gurgaon, HaryanaPosted Mar 2026 · Candidate report, summarized by Dataford

After a recruiter conversation, I went into a structured sequence where machine learning fundamentals were the backbone of almost every discussion.

I was pulled into questions around core concepts like boosting and what to do when classes are imbalanced, and they also tested how I linked ML to real business outcomes—especially around fraud detection.

The interviews leaned into case-study style prompts and deeper explanations of ML principles, not flashy coding. Even when the questions felt business-facing, they kept circling back to whether I could reason logically from the modeling assumptions to the practical goal. There were also some puzzle and guesstimate-style problem-solving moments that rewarded clear thinking more than

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