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Data Engineer Interview Questions

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Data Engineer Interview Questions

Data engineers are IT professionals who are needed in almost every industry. Data engineers monitor data trends to determine best next steps for companies. A critical part of a data engineer job is to process raw data into usable data by creating data pipelines and building data systems.

Top Data Engineer Interview Questions & How To Answer

Question 1

Question #1: Can you describe in detail your level of expertise with programming languages?

How to answer
How to answer: Before the interview, review your resume and/or portfolio and make a list of the programs you are most proficient with. If you find that you are lacking the expertise in a program that the company predominately uses, describe yourself as a highly motivated self-starter who will work tirelessly to learn the program(s).
Question 2

Question #2: Explain data engineering in your own words.

How to answer
How to answer: Highlight your role in relation to the larger organization and other roles like data scientists to clearly define your contribution to the overall system of business. Clarify the difference between a database-centric engineer and a pipeline-centric engineer.
Question 3

Question #3: Can you describe your experience working with Apache Hadoop and cloud data management environments?

How to answer
How to answer: Research the company's software, data cloud products, and use of Apache Hadoop to be prepared for this inquiry. Data Engineers must be fluent in programming languages and data management systems used throughout the industry such as Apache Hadoop.

20,124 data engineer interview questions shared by candidates

What are your strengths?(technical background question) Program an app that does x on paper using any language What is most important in a team? Why did you choose to work in IT? Why do you want to work with our team?
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Data Engineer

Interviewed at Three Point Turn

4.8★
Dec 30, 2022

What are your strengths?(technical background question) Program an app that does x on paper using any language What is most important in a team? Why did you choose to work in IT? Why do you want to work with our team?

Please use the awswrangler module to create a list of the files in the input folder that are not in the output folder. There is an AWS S3 bucket with two folders. Here is the initial code: import awswrangler as wr input_folder = 's3://mf-pythontest/in' output_folder = 's3://mf-pythontest/out' Using the AWS wrangler module, please create a list of the files in the input folder that are not in the output folders. The Required output is: ['doc_003.parquet']You must use the awswrangler package: https://github.com/awslabs/aws-data-wranglerYou will need to have some AWS credentials to access this public bucket. ***TIP*** The solution should have no more than three lines of code
avatar

Data Engineer

Interviewed at Common Code

4.6★
Aug 3, 2020

Please use the awswrangler module to create a list of the files in the input folder that are not in the output folder. There is an AWS S3 bucket with two folders. Here is the initial code: import awswrangler as wr input_folder = 's3://mf-pythontest/in' output_folder = 's3://mf-pythontest/out' Using the AWS wrangler module, please create a list of the files in the input folder that are not in the output folders. The Required output is: ['doc_003.parquet']You must use the awswrangler package: https://github.com/awslabs/aws-data-wranglerYou will need to have some AWS credentials to access this public bucket. ***TIP*** The solution should have no more than three lines of code

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