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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.

20,192 data engineer interview questions shared by candidates

Python- 1. WAP to eliminate vowels in input string. 2. WAP to print "aaabbbbcccc". input - 'a3b4c4' SQL- 1. rank/dense_rank/row_num - state difference and explain with a real life example. 2. Input Table C1 | c2 1 | India 2 | Aus 3 | Pak 4 | SL OutPut India | Aus India | Pak India | SL Aus | Pak Aus | SL Pak | SL Big Data :- 1. Diff between Parquet/Avro/ORC/CSV 2. Hive partitioning vs bucketing 3. How data is stored in AWS S3 ? 4. Types of Spark modes (cluster/client) 5. Types of cluster managers (YARN/Mesos/ Kubernetes/Local/Standalone)
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Data Engineer

Interviewed at Netcracker Technology

3.5★
Aug 19, 2022

Python- 1. WAP to eliminate vowels in input string. 2. WAP to print "aaabbbbcccc". input - 'a3b4c4' SQL- 1. rank/dense_rank/row_num - state difference and explain with a real life example. 2. Input Table C1 | c2 1 | India 2 | Aus 3 | Pak 4 | SL OutPut India | Aus India | Pak India | SL Aus | Pak Aus | SL Pak | SL Big Data :- 1. Diff between Parquet/Avro/ORC/CSV 2. Hive partitioning vs bucketing 3. How data is stored in AWS S3 ? 4. Types of Spark modes (cluster/client) 5. Types of cluster managers (YARN/Mesos/ Kubernetes/Local/Standalone)

The most involved part was in deciding how to rate top restaurants with a given data table of yelp reviews. This was not terribly difficult, but did take a small bit of thought and a fair bit of know how for manipulating the dataframe
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Senior Data Engineer

Interviewed at SemanticBits

4.5★
Mar 31, 2022

The most involved part was in deciding how to rate top restaurants with a given data table of yelp reviews. This was not terribly difficult, but did take a small bit of thought and a fair bit of know how for manipulating the dataframe

Just follow the briefings and you can ask questions when I am through, also let me know when you are done reading and understanding every line. Clear? Q1: What type of job(s) have you had? How did you get your previous job(s)? Q2: What were your main Responsibilities and Achievements in your previous jobs? Q3: Can you work under stress and pressure? Q4: Are you currently employed? Q5: How would you like to be Paid? Direct deposit or Check? Q6: How would you describe yourself? I was asked what bank I use as well....
avatar

Sr Data Engineer

Interviewed at Zuora

3.5★
Mar 31, 2022

Just follow the briefings and you can ask questions when I am through, also let me know when you are done reading and understanding every line. Clear? Q1: What type of job(s) have you had? How did you get your previous job(s)? Q2: What were your main Responsibilities and Achievements in your previous jobs? Q3: Can you work under stress and pressure? Q4: Are you currently employed? Q5: How would you like to be Paid? Direct deposit or Check? Q6: How would you describe yourself? I was asked what bank I use as well....

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