CDW Data Engineer Interview Questions and Answers

Basic programming questions

Q1. Salary and self intro discussion
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Quantitative ability and logical ability

Q1. In which programming language you are good at?
Ans. 
I am proficient in Java and Python.
• Strong understanding of object-oriented programming concepts

• Experience with Java frameworks such as Spring and Hibernate

• Proficient in Python libraries such as NumPy and Pandas
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Q2. Write a program to print HCF of numbers as output
Ans. 
Program to print HCF of numbers as output
• Take input of two numbers from user

• Find the smaller number between the two

• Run a loop from 1 to the smaller number

• Check if both numbers are divisible by the current loop variable

• If yes, update the HCF variable

• Print the HCF as output
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Q1. Why should we hire you?
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Reasoning

There are one hour exam

Q1. Advance level of sql and python
Ans. 
Advanced level of SQL and Python skills are essential for a Data Engineer role.
• Strong understanding of SQL queries, joins, subqueries, and optimization techniques.

• Proficiency in writing complex Python scripts for data manipulation, analysis, and automation.

• Experience with data modeling, ETL processes, and working with large datasets.

• Knowledge of data warehousing concepts and tools like SQL Server, PostgreSQL, or Snowfl...read more
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Q1. Basic of SQL,some join condition
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Q2. Basic of python
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