Learning Technology Interview Questions

2,887 learning technology interview questions shared by candidates

I was asked to solve a coding problem involving strings and palindromes. The interviewer mentioned that time complexity didn’t matter; the only expectation was to provide a working solution without errors, no explanation required.
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Applied Machine Learning Scientist

Interviewed at TD

3.8
Sep 24, 2025

I was asked to solve a coding problem involving strings and palindromes. The interviewer mentioned that time complexity didn’t matter; the only expectation was to provide a working solution without errors, no explanation required.

The main technical question was a deep dive into the architecture of two-tower models. They specifically asked how I would design and implement one for a large-scale recommendation system, focusing on how to build the user and item towers separately.
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Machine Learning Engineer

Interviewed at Rokt

3.8
Nov 3, 2025

The main technical question was a deep dive into the architecture of two-tower models. They specifically asked how I would design and implement one for a large-scale recommendation system, focusing on how to build the user and item towers separately.

- Describe a past project - What is regularization? What are different types of it? - If you have a million data points, would you use DNN or KNN? What's the difference in inference time? - Coding problem was writing the Splitwise algorithm. Given a list of payers and payees, find the best way to settle expenses.
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Machine Learning Engineer

Interviewed at Pinterest

3.6
Oct 13, 2023

- Describe a past project - What is regularization? What are different types of it? - If you have a million data points, would you use DNN or KNN? What's the difference in inference time? - Coding problem was writing the Splitwise algorithm. Given a list of payers and payees, find the best way to settle expenses.

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