Sr Data Scientist Interview Questions

278 sr data scientist interview questions shared by candidates

* Technical interviews was an average complexity for both python and SQL * The final interview was 4 sections: 1. Consulting: Quick and generic. Didn’t see how you can prepare beyond STAR stories of your past work on your resume. 2. Machine Learning: Was supposed to conceptual ML techniques questions but interviewer made it a case. 3. Business Case: Was supposed to be a case but it was just a discussion of my past experience. 4. Leadership: Typical behavior
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Sr Data Scientist

Interviewed at Visa Inc.

3.8
Nov 21, 2025

* Technical interviews was an average complexity for both python and SQL * The final interview was 4 sections: 1. Consulting: Quick and generic. Didn’t see how you can prepare beyond STAR stories of your past work on your resume. 2. Machine Learning: Was supposed to conceptual ML techniques questions but interviewer made it a case. 3. Business Case: Was supposed to be a case but it was just a discussion of my past experience. 4. Leadership: Typical behavior

He seemed like someone who just went through some cool ML/DS terms. Asked about how to fit a logistic regression, PCA, p-value, A/B testing, gradient descent, bias-variance tradeoff etc. In scripting question, he merely asked how to find mode of a list without using any in-built maths function or library.
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Sr. Data Scientist

Interviewed at Amazon

3.5
Aug 10, 2022

He seemed like someone who just went through some cool ML/DS terms. Asked about how to fit a logistic regression, PCA, p-value, A/B testing, gradient descent, bias-variance tradeoff etc. In scripting question, he merely asked how to find mode of a list without using any in-built maths function or library.

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