American Express Data Scientist interview experience

No offer

Medium

Positive

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

My interviews were grounded in machine learning knowledge and went deeper than I expected for what felt like an early-stage process.

I got asked to explain the difference between random forests and gradient-boosted decision trees, and I also had questions that probed basic Python knowledge. On top of that, they grilled me on the projects I had mentioned and kept connecting the discussion back to how well I actually understood the work.

There were also puzzle and guesstimate-style prompts, which pushed the conversation beyond pure algorithm explanation into quick reasoning. Another thread was statistics-heavy concepts, including probability questions and more fundamentals around modeling and estimation.

Overall the

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