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ETL is a process for extracting data from source systems, transforming it into a structured format, and loading it into a destination system (e.g., a data warehouse). It's crucial because it helps cleanse, enrich, and organize data for analysis, making it ready for use by data professionals.
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Data Engineer

Interviewed at AzamPay

4.7★
Sep 23, 2023

ETL is a process for extracting data from source systems, transforming it into a structured format, and loading it into a destination system (e.g., a data warehouse). It's crucial because it helps cleanse, enrich, and organize data for analysis, making it ready for use by data professionals.

Hacker Rank 3: Oh surprise, more regex. (I'm just joking, I can't remember the title but let's called file processing). Given a text file containing network connections information (space separated) like this: something - - "GET something something" [another thing with spaces in the middle] 4500 where: something = first column - = second column - = third column "Get something...." = forth column and so on. The last column, 4500 represents the number of bytes transmitted. You need to filter the records where a number of bytes are bigger than 5000 and the sum of bytes of those records.
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Data Engineer

Interviewed at Kueski

4★
Sep 4, 2017

Hacker Rank 3: Oh surprise, more regex. (I'm just joking, I can't remember the title but let's called file processing). Given a text file containing network connections information (space separated) like this: something - - "GET something something" [another thing with spaces in the middle] 4500 where: something = first column - = second column - = third column "Get something...." = forth column and so on. The last column, 4500 represents the number of bytes transmitted. You need to filter the records where a number of bytes are bigger than 5000 and the sum of bytes of those records.

The minimum number of operations to reach a number using only incrementing and multiplying by 2 if you were to start from 0. Not so easy SQL question. Surprise regex and bash questions. The rest is easy multiple-choice questions based on data structures and OOP.
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Big Data Platform Engineer

Interviewed at PeakGames

3★
Mar 24, 2022

The minimum number of operations to reach a number using only incrementing and multiplying by 2 if you were to start from 0. Not so easy SQL question. Surprise regex and bash questions. The rest is easy multiple-choice questions based on data structures and OOP.

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