Sr Data Scientist Interview Questions

3,374 sr data scientist interview questions shared by candidates

Resume questions and deep learning based questions on recurrence, transformers, CNNs, math behind loss functions. Graph coding question but it wasn’t provided, he off the cuff spoke out a question I had to solve. Avoid.
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Senior Data Scientist

Interviewed at Nexxen

3.3
Feb 5, 2025

Resume questions and deep learning based questions on recurrence, transformers, CNNs, math behind loss functions. Graph coding question but it wasn’t provided, he off the cuff spoke out a question I had to solve. Avoid.

Some examples: - Describe the APIs you would implement to create a program that ran a game. - Given imbalanced data, walk through the process of building a machine learning model. - Calculate expected values for different distributions and scenarios.
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Senior Data Scientist

Interviewed at Brex

3.9
Mar 15, 2021

Some examples: - Describe the APIs you would implement to create a program that ran a game. - Given imbalanced data, walk through the process of building a machine learning model. - Calculate expected values for different distributions and scenarios.

The hiring manager acted more like an interrogator than a professional interviewer. He tried to find contradictions in my resume instead of asking deep questions about how I did my prior projects. For example, he wanted to put me in a corner that GPT 3.5 was not issued when I claimed it in my resume, while he was wrong about the issue date of GPT 3.5. See, how cheap were his questions!
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Senior Data Scientist

Interviewed at Molina Healthcare

3.3
Dec 23, 2024

The hiring manager acted more like an interrogator than a professional interviewer. He tried to find contradictions in my resume instead of asking deep questions about how I did my prior projects. For example, he wanted to put me in a corner that GPT 3.5 was not issued when I claimed it in my resume, while he was wrong about the issue date of GPT 3.5. See, how cheap were his questions!

- Tell me about your experience in ML and your resume. - How to deal with seasonality in a time series. - What is a decision tree. - What is bias vs variance and how to treat them. - What is price elasticity. - How to convince a senior executive that data science is important (duh! seriously, I got asked this question by the person who was looking at another screen and was not even listening!)
avatar

Senior Data Scientist

Interviewed at PepsiCo

3.8
Feb 3, 2021

- Tell me about your experience in ML and your resume. - How to deal with seasonality in a time series. - What is a decision tree. - What is bias vs variance and how to treat them. - What is price elasticity. - How to convince a senior executive that data science is important (duh! seriously, I got asked this question by the person who was looking at another screen and was not even listening!)

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