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WNS Data Engineer Interview Questions and Answers

Updated 1 Dec 2024

WNS Data Engineer Interview Experiences

5 interviews found

Data Engineer Interview Questions & Answers

user image tribhuwan nath

posted on 1 Dec 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. List vs tuple ?
  • Q2. What is Slowly changing dimension
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(2 Questions)

  • Q1. They asked questions on PySpark only Related to how can we divide one dataset into multiple data frames based on a specific category. Gave me basic python programming questions to capitalize the name.
  • Q2. Basic python programming questions. how to capitalize the name without using capitalize.

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Round 1 - One-on-one 

(2 Questions)

  • Q1. About Windows Functions in SQL and queries based on that
  • Q2. Find 3rd highest salary in employee table

Interview Preparation Tips

Interview preparation tips for other job seekers - Stick to your resume and be confident,
focus on SQL and Azure ADB,ADF

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 12 Mar 2022

I applied via Naukri.com and was interviewed in Feb 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Oops concepts Design system such that each developer can work on their respective module with out any issues Scripting vs functional programming

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well with design concepts

WNS interview questions for designations

 Data Analyst

 (20)

 Data Scientist

 (1)

 Data Entry Operator

 (7)

 Data Entry jobs

 (2)

 Data Analyst Intern

 (2)

 Senior Data Analyst

 (1)

 Associate Data Analyst

 (1)

 Data Entry Typing

 (1)

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 12 Mar 2022

I applied via Naukri.com and was interviewed in Feb 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Oops concepts Design system such that each developer can work on their respective module with out any issues Scripting vs functional programming

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well with design concepts

Interview questions from similar companies

Interview Questionnaire 

3 Questions

  • Q1. About my self and my experience.
  • Q2. What's the reason for leaving previous job?
  • Q3. Technical question depends on process.

I applied via Walk-in and was interviewed before Jun 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Da tools

Interview Preparation Tips

Interview preparation tips for other job seekers - Get referal

I applied via Walk-in and was interviewed before Apr 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Assignment 

Interview Preparation Tips

Interview preparation tips for other job seekers - My name is Aliya Tabassum Shaikh azizoddin

I was interviewed before Dec 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 120 Minutes
Round difficulty - Medium

  • Q1. 

    Ninja and His Secret Information Encoding Problem

    Ninja, a new member of the FBI, has acquired some 'SECRET_INFORMATION' that he needs to share with his team. To ensure security against hackers, Ninja dec...

  • Ans. 

    The task is to encode and decode 'SECRET_INFORMATION' for security purposes and determine if the transmission was successful.

    • Read the number of test cases 'T'

    • For each test case, encode the 'SECRET_INFORMATION' and then decode it

    • Compare the decoded string with the original 'SECRET_INFORMATION'

    • Print 'Transmission successful' if they match, else print 'Transmission failed'

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

  • Q1. 

    Equilibrium Index Problem Statement

    Given an array Arr consisting of N integers, your task is to find the equilibrium index of the array.

    An index is considered as an equilibrium index if the sum of elem...

  • Ans. 

    Find the equilibrium index of an array where sum of elements on left equals sum on right.

    • Iterate through the array and calculate prefix sum and suffix sum at each index.

    • Compare prefix sum and suffix sum to find equilibrium index.

    • Return the left-most equilibrium index or -1 if none found.

  • Answered by AI
Round 3 - HR 

Round duration - 50 Minutes
Round difficulty - Easy

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Data Analyst in PuneEligibility criteria7 CGPACapgemini interview preparation:Topics to prepare for the interview - Data Structures, OOPS, SQL, Python, JavaTime required to prepare for the interview - 1 MonthInterview preparation tips for other job seekers

Tip 1 : Focus more on SQL
Tip 2 : Keep up with ongoing projects in the company

Application resume tips for other job seekers

Tip 1 : Be honest about what you add.
Tip 2 : Don't forget to mention extra curriculars.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Walk-in and was interviewed before Aug 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(1 Question)

  • Q1. How to transpose data set
  • Ans. 

    Transposing a data set involves flipping rows and columns.

    • Identify the data set to be transposed

    • Create a new table with the columns and rows flipped

    • Copy the data from the original table to the new table

    • Transpose can be done using Excel, Python, R, SQL, etc.

    • Example: Transposing a table of sales data to have products as rows and months as columns

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Was asked hard hitting questions by interviewer. Ultimately failed
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WNS Interview FAQs

How many rounds are there in WNS Data Engineer interview?
WNS interview process usually has 1-2 rounds. The most common rounds in the WNS interview process are Technical, One-on-one Round and Resume Shortlist.
How to prepare for WNS Data Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at WNS. The most common topics and skills that interviewers at WNS expect are Python, Big Data, ETL, Azure and SQL.
What are the top questions asked in WNS Data Engineer interview?

Some of the top questions asked at the WNS Data Engineer interview -

  1. They asked questions on PySpark only Related to how can we divide one dataset ...read more
  2. Oops concepts Design system such that each developer can work on their respecti...read more
  3. Basic python programming questions. how to capitalize the name without using ca...read more

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WNS Data Engineer Interview Process

based on 2 interviews

1 Interview rounds

  • Technical Round
View more
WNS Data Engineer Salary
based on 38 salaries
₹5.7 L/yr - ₹16.7 L/yr
6% more than the average Data Engineer Salary in India
View more details

WNS Data Engineer Reviews and Ratings

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Job security

2.0

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3.0

Promotions

4.0

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