Principal Data Engineer Interview Questions

10,184 principal data engineer interview questions shared by candidates

The questions were more part of a whole coding test that was broken in to sections. Some of those sections involved implementing a solution that conformed to a specified time complexity. Also a discussion of potential data structures that could be used to solve some situations.
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Principal IOS Engineer

Interviewed at Comcast

3.7
Jun 3, 2022

The questions were more part of a whole coding test that was broken in to sections. Some of those sections involved implementing a solution that conformed to a specified time complexity. Also a discussion of potential data structures that could be used to solve some situations.

What can you tell me about clinical trials? (extremely broad) What are some things people get right and some things people get wrong when conducting clinical trials? (again, every part of a clinical trial falls in one of these two categories)
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Associate Principal

Interviewed at Flatiron Health

3.2
Apr 11, 2023

What can you tell me about clinical trials? (extremely broad) What are some things people get right and some things people get wrong when conducting clinical trials? (again, every part of a clinical trial falls in one of these two categories)

how do you ensure a good estimate of the probabilistic distribution after predicting a binary variable? what metrics would you use to evaluate the probability estimate of a model? why wouldn’t random grid hyperparameter tuning not work and what would you use instead?
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Principal Data Scientist

Interviewed at Aily

3.5
Jan 26, 2024

how do you ensure a good estimate of the probabilistic distribution after predicting a binary variable? what metrics would you use to evaluate the probability estimate of a model? why wouldn’t random grid hyperparameter tuning not work and what would you use instead?

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