Data Engineer Interview Questions

20,250 data engineer interview questions shared by candidates

sql: already present in glassdoor. 1)ratio of is_fat and is_someother among total products 2)top 5 single channel companies that spent max amount on promotion. take into account of the ones that have only single entry company , channel; 1 food, water 2 food 3) percentage of sales on first day and last day python: occurrences of a letter in a string, replace none with previous value in a list, from a dictionary get the keys corresponding to nth highest value.
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Data Engineer

Interviewed at Meta

3.5
Jun 8, 2021

sql: already present in glassdoor. 1)ratio of is_fat and is_someother among total products 2)top 5 single channel companies that spent max amount on promotion. take into account of the ones that have only single entry company , channel; 1 food, water 2 food 3) percentage of sales on first day and last day python: occurrences of a letter in a string, replace none with previous value in a list, from a dictionary get the keys corresponding to nth highest value.

One question they asked was what do I think data engineering is. I think when applying for this role you should have a good sense of the data engineering ecosystem and opportunities and what it means to different people as well as what it means to you.
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Data Engineer

Interviewed at Meta

3.5
Sep 25, 2021

One question they asked was what do I think data engineering is. I think when applying for this role you should have a good sense of the data engineering ecosystem and opportunities and what it means to different people as well as what it means to you.

you are given a dictionary where the key is location of book store and value is the list of reviews as string. the list can have duplicate values. return the most frequent review across all locations after removing the duplicate review for each location.
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Data Engineer

Interviewed at Meta

3.5
Oct 31, 2024

you are given a dictionary where the key is location of book store and value is the list of reviews as string. the list can have duplicate values. return the most frequent review across all locations after removing the duplicate review for each location.

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