Skip to main content

Data Engineer Interview Questions

Review this list of 161 Data Engineer interview questions and answers verified by hiring managers and candidates.

+ Share interview

Given a large set of CSV files with thousands of paragraphs each, how would you detect duplicates within each file, and how would you scale this solution for many files?
Data Engineer
Coding
1 answer
"My brute force approach was to read them. Give a id to each paragraph and for each token count the number of time it has appeared. If any two rows look same , it is duplicated. Further , interviewer guided me that he will do it with hashing."
Payal B. - "My brute force approach was to read them. Give a id to each paragraph and for each token count the number of time it has appeared. If any two rows look same , it is duplicated. Further , interviewer guided me that he will do it with hashing."See full answer
Data Engineer
Coding

🧠 Want an expert answer to a question? Saving questions lets us know what content to make next.

Showing 161-161 of 161

Popular roles

Product Manager Software Engineer Machine Learning Engineer Data Engineer Data Scientist

Interviewed recently?

Help improve our question database (and earn karma) by telling us about your experience

+ Share interview experience

Trending companies

Apple

Walmart Labs

Meta

Visa

Databricks

Salesforce

Exponent

Get updates in your inbox with the latest tips, job listings, and more.

Follow Us

Products

Pricing Courses Coaching Interview Guides Interview Experiences Interview Questions Peer Mock Interviews Job Referrals All Companies

Courses

Product Management Software Engineering System Design Data Analytics Product Analytics Data Engineer Security Engineering Security Analyst Engineering Management Technical Program Management UX / Product Design Data Science SQL Interviews Solutions Architect BizOps & Strategy Machine Learning Engineering Behavioral Generative AI

Interview Questions

PM Interview Questions TPM Interview Questions EM Interview Questions Software Engineering Interview Questions Data Analytics Interview Questions Data Engineering Interview Questions Solutions Architect Interview Questions BizOps Interview Questions Designer Interview Questions Machine Learning Interview Questions Data Science Interview Questions

Interview Experiences

All Experiences Verified Experiences Share Interview Experience PM Experiences EM Experiences SWE Experiences OpenAI Experiences Anthropic Experiences Google Experiences Meta Experiences