Nineleaps Technology Solutions Data Engineer Interview Questions and Answers for Experienced

It was easy to attend only general topics can be asked

Q1. Coding choise question
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Q1. It was technical interview questions about python and sql
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Q1. It was a basic screening round as it was a virtual walk-in drive so was asked basic details about my work experience
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Q1. What do you worked on AWS
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Q2. SQL aggregate and window question
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Q3. Coding In python
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Q1. AWS S3 Questions
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Q2. AWS lambda Questions
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Q3. AWS Redshift Questions
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Q1. Why left previous company
Ans. 
Seeking new challenges and growth opportunities
• Desire for new challenges and growth

• Looking for a more innovative environment

• Seeking better work-life balance
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Q2. Salary Discussion
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3 SQL and 2 Python questions were asked, SQL was moderate, Python was tough

Basic questions python spark, sql

Q1. Salary discussion
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Q1. Ranking code in sql
Ans. 
Ranking code in SQL
• Use the RANK() function to assign a rank to each row based on a specified column

• Use the ORDER BY clause to determine the order of ranking

• Handle ties in ranking using the DENSE_RANK() function

• Use the ROW_NUMBER() function to assign a unique number to each row
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Q2. Read a file using python
Ans. 
To read a file using Python, use the open() function and specify the file path and mode.
• Use the open() function to open the file

• Specify the file path and mode (e.g., 'r' for reading)

• Read the contents of the file using the read() method

• Close the file using the close() method
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Q3. Reverse a array string using python
Ans. 
Reverses an array of strings using Python.
• Use the reverse() method to reverse the array in-place.

• Alternatively, use slicing with a step of -1 to create a new reversed array.

• Remember to convert the array to a list before reversing if necessary.
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