Data Engineer Interview Questions

20,237 data engineer interview questions shared by candidates

A: "They focused heavily on how I’ve implemented end-to-end data pipelines using Azure Data Factory and Databricks—especially how I handled data ingestion, transformation using PySpark, and loading into a Delta Lake. They wanted to see both my technical depth and how I troubleshoot production issues."
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Azure Data Engineer

Interviewed at EY

3.6
Jul 23, 2025

A: "They focused heavily on how I’ve implemented end-to-end data pipelines using Azure Data Factory and Databricks—especially how I handled data ingestion, transformation using PySpark, and loading into a Delta Lake. They wanted to see both my technical depth and how I troubleshoot production issues."

Prime Factorization... They expected me to remember the Sieve of Eratosthenes off the top of my head... That has absolutely nothing to do with the job role they described and I highly doubt they use it in their code base.

Senior Engineer (Data Wrangling)

Interviewed at TrackBill

5
Jul 21, 2017

Prime Factorization... They expected me to remember the Sieve of Eratosthenes off the top of my head... That has absolutely nothing to do with the job role they described and I highly doubt they use it in their code base.

What have you done so far as a Data Engineer? How many years of experience? How much data you processed? Do you have experience with AWS tools and technologies like DynamoDB? How can you manage MongoDB in production? Why you want to leave current job and country?
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Data Engineer

Interviewed at Arvoia

2.7
Mar 16, 2018

What have you done so far as a Data Engineer? How many years of experience? How much data you processed? Do you have experience with AWS tools and technologies like DynamoDB? How can you manage MongoDB in production? Why you want to leave current job and country?

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