Sr Data Engineer Interview Questions

2,606 sr data engineer interview questions shared by candidates

Given a dataset of a billion unique molecule IDs and their descriptions, and a million seemingly random IDs to extract from the dataset, how would you algorithmically architecture the solution in code that you write? You cannot use any databases or tools.
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Senior Data Engineer

Interviewed at Atomwise

3.6
Jun 25, 2019

Given a dataset of a billion unique molecule IDs and their descriptions, and a million seemingly random IDs to extract from the dataset, how would you algorithmically architecture the solution in code that you write? You cannot use any databases or tools.

There were few SQL questions and a question around continuous streaming of data from APIs. The biggest issue was being able to discuss the solution because manager just kept interrupting and didn't provide any hints either. Even before I would complete a sentence, he started writing down solutions even though that wasn't the solution I was suggesting. He continued to move the focus from one aspect to another and then started asking questions about ideas that he assumed I was trying to give even though I repeatedly tried to clarify that what I am suggesting is different from what he is writing down. It was very difficult to communicate and it was also very confusing. In a 30 minute interview I barely spoke for 10 minutes.
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Senior Data Engineer

Interviewed at Tesla

3.5
Nov 29, 2022

There were few SQL questions and a question around continuous streaming of data from APIs. The biggest issue was being able to discuss the solution because manager just kept interrupting and didn't provide any hints either. Even before I would complete a sentence, he started writing down solutions even though that wasn't the solution I was suggesting. He continued to move the focus from one aspect to another and then started asking questions about ideas that he assumed I was trying to give even though I repeatedly tried to clarify that what I am suggesting is different from what he is writing down. It was very difficult to communicate and it was also very confusing. In a 30 minute interview I barely spoke for 10 minutes.

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