Microsoft·Applied Scientist

Microsoft Applied Scientist interview experience

No offer

Hard

Negative

Candidate report, summarized by Dataford

My Microsoft Applied Scientist process included a tougher third-round interview with a principal applied scientist.

The technical start immediately pulled me into K-means: I explained the random initialization and then how centroids get updated by taking the mean. It felt like a familiar setup, but the real difficulty came when he asked me to prove why the mean is the appropriate metric to represent the centroid.

I tried to answer with intuition, explaining it in a way that felt natural, but he kept pushing for something more formal. I had to keep going until I realized he wasn’t satisfied with a high-level explanation—he wanted the mathematical justification.

Overall, the difficulty felt difficult and

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