Why is parquet file way faster when retrieving data from compared to csv?
Data Engineer Interview Questions
18,773 data engineer interview questions shared by candidates
Have you had experiences with GCP before?
Questions on Joins, CTE, recursive CTE, UNION and common scenarios, self join , manager question.
They've shown great interest in my previous experience and actually asked concise questions around what I did.
Why several switches in your previous roles? What was some feedback that you received in your previous roles? Did you leave your last job without any offer in hand? What are you looking for in your next job? Design a data quality system.
Describe the project and what was the major issue you have faced.
In written round: 10 quant, 10 reasoning, 15 python, 15 java Tech round 1: where they asked all the concepts of oops, asked to write code regarding oops concepts, asked about projects and some sql query Tech round 2: they gave a problem and asked to code so prepare for live coding.
Stats, distributed systems, databases, map-reduce, general analytics skills
Top k most frequent element -> leetcode medium, ETL/ELT experience, snowflake/stars schema.
What salary are you expect
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