1p3a Question · Oct 2025

Upstart Fulltime Machine Learning Engineer Onsite Interview Experience

MLE Onsite Hard
1 upvote 2 replies

Question Details

Screening 1 - stats, probability,

coding An atom has a half-life of 1 day. What is the probability that 100 atoms will survive for 10 days? Code for simulation

Follow-up How to improve Total Quality

Full Details

Screening 1 - stats, probability,

coding An atom has a half-life of 1 day. What is the probability that 100 atoms will survive for 10 days? Code for simulation

Follow-up How to improve Total Quality (TC) and why it works? Leverage the NumPy size argument; vectors are stored in memory closely, therefore faster to fetch. The following content requires a score higher than 160. You can already view it. Screening 2 - ML

coding Implement decision tree

Onsite ML

coding - Standard ML questions - LeetCode (likely 3sum) - The Nth prime number BE: Deadline and conflicts related Thoughts: The probability and statistics questions were largely similar to those in previous interviews, but they might have evolved into coding or simulation questions. Without prior interview experience, I personally found the coding questions more difficult. After being notified of the interview, I had separate interviews with the hiring manager and virtual manager, only to find out that they had stopped hiring for the MLE program... This company is really a trap.

About This Question

This is a reported interview question from a upstart interview for a mle role during the onsite round reported in 2025.

It covers the following topics: Tree .

Difficulty rating: Hard

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