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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.

SQL questions: 1. First question was based on the ranking and join to get the solution 2. Second follow up question used the same database and tables. The question asked for a rolling average based on last 3 days. 3. Third question was again based on a rolling sum and then count query based on that rolling sum. All of the SQLs required CTE statements Lastly the Python programming question was a basic for loop to search the position of a target number. Interviewer asked for a different approach of solving it.
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Senior Data Engineer

Interviewed at Atlassian

3.2★
May 5, 2025

SQL questions: 1. First question was based on the ranking and join to get the solution 2. Second follow up question used the same database and tables. The question asked for a rolling average based on last 3 days. 3. Third question was again based on a rolling sum and then count query based on that rolling sum. All of the SQLs required CTE statements Lastly the Python programming question was a basic for loop to search the position of a target number. Interviewer asked for a different approach of solving it.

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