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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.

20,205 data engineer interview questions shared by candidates

If you are applying for a data engineering roles - technical questions will be around - Database schemas, Data Modelling approaches, Data validation, challenges that you have faced while performing data modelling. How do you design entire ETL process? How the schema will look like? What tools would you use? Behavioral questions can be anything - you don't have to prepare for this. Just be yourself, be authentic. I feel there is no right or wrong answers to these questions.
avatar

Lead Data Engineer

Interviewed at Virtuous Software

3.2★
Aug 24, 2022

If you are applying for a data engineering roles - technical questions will be around - Database schemas, Data Modelling approaches, Data validation, challenges that you have faced while performing data modelling. How do you design entire ETL process? How the schema will look like? What tools would you use? Behavioral questions can be anything - you don't have to prepare for this. Just be yourself, be authentic. I feel there is no right or wrong answers to these questions.

// Given a singly linked list without values defined by: class Node { Node next } // Write a function that removes all elements from the list whose _index_ is a fibonacci number // o -> o -> o -> o -> o -> o -> o -> o -> o -> o -> o -> o // 0 1 2 3 4 5 6 7 8 9 10 11 // x x x x x // becomes // o ----------------> o ------> o -> o ------> o -> o -> o // 0 4 6 7 9 10 11
avatar

Software Engineer/Data Scientist

Interviewed at Tripadvisor

3.5★
Oct 29, 2014

// Given a singly linked list without values defined by: class Node { Node next } // Write a function that removes all elements from the list whose _index_ is a fibonacci number // o -> o -> o -> o -> o -> o -> o -> o -> o -> o -> o -> o // 0 1 2 3 4 5 6 7 8 9 10 11 // x x x x x // becomes // o ----------------> o ------> o -> o ------> o -> o -> o // 0 4 6 7 9 10 11

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