2 NielsenIQ Data Engineer Interview Questions & Answers | Complete Prep Guide 2025

NielsenIQ Data Engineer Interview Experiences

1 interview found

Data Engineer Interview Questions & Answers

Anonymous

posted on 21 May 2024

Interview experience

Good

Difficulty level

Process Duration

Result

Round 1 - Technical

(2 Questions)

Q1. Windows functions in sql

Ans.

Window functions in SQL are used to perform calculations across a set of table rows related to the current row.

Window functions are used to calculate values based on a specific subset of rows within a table.
They allow for ranking, aggregation, and other calculations without grouping the rows.
Examples of window functions include ROW_NUMBER(), RANK(), and SUM() OVER().

Answered by AI

Add your answer

Q2. Delta lake from Databricks

Ans.

Delta Lake is an open-source storage layer that brings ACID transactions to Apache Spark and big data workloads.

Delta Lake is built on top of Apache Spark and provides ACID transactions for big data processing.
It allows for schema enforcement and evolution, data versioning, and time travel queries.
Delta Lake is compatible with popular data science and machine learning libraries like TensorFlow and PyTorch.

Answered by AI

Add your answer

Skills evaluated in this interview

Sopra Steria

Rated 4 for Job Security by our employees on AmbitionBox

Secure your future with a company that values your job stability.

Data Engineer Jobs at NielsenIQ

View all

Data Engineer

Chennai

5-8 Yrs

₹ 17-32 LPA

Top trending discussions

View All

I have 7 YOE. from Delhi Current CTC - 9.25LPA + 75K varriable. Working Skillset is Kubernetes and Openstack. Current - 100% WFH 1. NTT Data- Noida Hybrid CTC... read more

Got a question about NielsenIQ?

Ask anonymously on communities.

Interview questions from similar companies

Software Engineer Interview Questions & Answers

Euromonitor International

Anonymous

posted on 6 Oct 2022

I applied via Referral and was interviewed before Oct 2021. There were 3 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

(2 Questions)

Q1. Basic concept of c#,.net framework

Add your answer

Q2. What is CFA and DFA in entity framework core

Ans.

CFA and DFA are Change-Tracking and Database-First Approaches in Entity Framework Core.

CFA (Change-Tracking Approach) is used to track changes made to entities in memory and then save them to the database.
DFA (Database-First Approach) is used to generate entity classes and DbContext from an existing database schema.
CFA is useful when working with disconnected entities, while DFA is useful when working with an existing ...

Answered by AI

Add your answer

Round 3 - HR

(1 Question)

Q1. Basic questions

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - It is easy to clear

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Euromonitor International

Anonymous

posted on 19 Jul 2022

I applied via Recruitment Consulltant and was interviewed in Jan 2022. There were 2 interview rounds.

Round 1 - Technical

(1 Question)

Q1. OOPS concepts, function overload, override,interface,string, string builder

Add your answer

Round 2 - HR

(1 Question)

Q1. Company profile,salary discussion

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Give the proper answer for the question,
Don't give unnecessary answers
Be possitive

Data Analyst Interview Questions & Answers

comScore

Anonymous

posted on 5 Nov 2022

I applied via Campus Placement and was interviewed in Oct 2022. There were 4 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 - Coding Test

1 easy sql and 1 easy python for 55 min

Round 3 - Coding Test

1 easy python and very hard sql for 1 hr 50 min

Round 4 - Technical

(2 Questions)

Q1. Mainly they focused on the answers you have written on round 2 and basic sql and pandas in python

Add your answer

Q2. 1) write a join 2) implement left join using pandas

Ans.

Answering a question on writing a join and implementing left join using pandas for Data Analyst role.

To write a join, we need to identify the common column(s) between two tables and use the JOIN keyword in SQL.
Example: SELECT * FROM table1 JOIN table2 ON table1.common_column = table2.common_column
To implement left join using pandas, we can use the merge() function with how='left' parameter.
Example: pd.merge(table1, tab

Answered by AI

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus more on SQL and pandas this will be enough and be interactive

Skills evaluated in this interview

Data Analyst Interview Questions & Answers

Numerator

Anonymous

posted on 29 Jun 2022

I applied via Company Website and was interviewed in May 2022. 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 - Aptitude Test

General questions related to reasoning. Not much hard to crack.

Interview Preparation Tips

Interview preparation tips for other job seekers - Always be confident believe in yourself.

Software Engineer Interview Questions & Answers

Numerator

Anonymous

posted on 9 Dec 2022

Interview experience

Good

Difficulty level

Moderate

Process Duration

Result

Selected

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 - Coding Test

Hackerrank test in Java and Angular

Round 3 - Technical

(2 Questions)

Q1. Spring Hibernate related questions

Add your answer

Q2. DS coding question on DP

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well for DS and Algo coding questions. Practice on Leetcode

Data Analyst Interview Questions & Answers

Numerator

BHAVESH MOORJANI

posted on 19 Mar 2024

Interview experience

Excellent

Difficulty level

Easy

Process Duration

Less than 2 weeks

Result

Selected

I applied via Walk-in and was interviewed before Mar 2023. There were 2 interview rounds.

Round 1 - HR

(1 Question)

Q1. What is your curren role?

Add your answer

Round 2 - Aptitude Test

Excel and sql test duration 2 hrs

Data Analyst Interview Questions & Answers

Dun & Bradstreet

Irene Diana

posted on 21 Jun 2024

Interview experience

Excellent

Difficulty level

Moderate

Process Duration

Less than 2 weeks

Result

No response

I applied via Naukri.com and was interviewed in May 2024. There were 3 interview rounds.

Round 1 - Technical

(2 Questions)

Q1. About data profiling

Add your answer

Q2. Data mapping questions

Add your answer

Round 2 - Behavioral

(2 Questions)

Q1. Problem solving questions

Add your answer

Q2. Scenario based questions

Add your answer

Round 3 - HR

(2 Questions)

Q1. Yet to receive call

Add your answer

Q2. Yet to confirm the dates

Add your answer

Data Analyst Interview Questions & Answers

C5i

Poongodi Vijay

posted on 4 Aug 2024

Interview experience

Excellent

Difficulty level

Process Duration

Result

Round 1 - One-on-one

(1 Question)

Q1. Self intro and technical questions

Add your answer

Round 2 - Technical

(1 Question)

Q1. Its all about statistical analysis

Add your answer

Data Analyst Interview Questions & Answers

C5i

Anonymous

posted on 1 Apr 2024

Interview experience

Average

Difficulty level

Easy

Process Duration

Less than 2 weeks

Result

Not Selected

I applied via Campus Placement and was interviewed in Mar 2024. There were 2 interview rounds.

Round 1 - Aptitude Test

60 minutes 60 questions

Round 2 - HR

(2 Questions)

Q1. Tell me about yourself

Add your answer

Q2. Why you want to join this company

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Calm and be positive

NielsenIQ Interview FAQs

How many rounds are there in NielsenIQ Data Engineer interview?

NielsenIQ interview process usually has 1 rounds. The most common rounds in the NielsenIQ interview process are Technical.

How to prepare for NielsenIQ 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 NielsenIQ. The most common topics and skills that interviewers at NielsenIQ expect are Python, Agile, SQL, genetics and Recruitment.

What are the top questions asked in NielsenIQ Data Engineer interview?

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

Windows functions in ...read more
Delta lake from Databri...read more

Tell us how to improve this page.

NielsenIQ Interviews By Designations

Interview Questions for Popular Designations

NielsenIQ Data Engineer Interview Process

based on 2 interviews

Interview experience

4.5

Good

HCLTech

An opportunity to work for Fortune 500 companies

TCS Data Engineer Interview Questions

3.7

• 89 Interviews

Accenture Data Engineer Interview Questions

3.8

• 78 Interviews

IBM Data Engineer Interview Questions

4.0

• 41 Interviews

Capgemini Data Engineer Interview Questions

3.7

• 33 Interviews

Cognizant Data Engineer Interview Questions

3.7

• 31 Interviews

Infosys Data Engineer Interview Questions

3.6

• 24 Interviews

Wipro Data Engineer Interview Questions

3.7

• 24 Interviews

Tech Mahindra Data Engineer Interview Questions

3.5

• 15 Interviews

HCLTech Data Engineer Interview Questions

3.5

• 12 Interviews

Genpact Data Engineer Interview Questions

3.8

• 8 Interviews

View all

BRACT's Vishwakarma Institute of Information Technology, Pune Placement Questions

2 Interviews

Vellore Institute of Technology (VIT) Placement Questions

1 Interview

Dr DY Patil Institute of Management and Research, Pune Placement Questions

1 Interview

N L Dalmia Institute of Management Studies and Research, Mumbai Placement Questions

1 Interview

Ness Wadia College of Commerce, Pune Placement Questions

1 Interview

PSGR Krishnammal College for Women, Coimbatore Placement Questions

1 Interview

Rajalakshmi Engineering College, Chennai Placement Questions

1 Interview

View all

NielsenIQ Data Engineer Salary

based on 17 salaries

₹8 L/yr - ₹22.9 L/yr

45% more than the average Data Engineer Salary in India

View more details

Data Engineer Jobs at NielsenIQ

Data Engineer

Chennai

5-8 Yrs

₹ 17-32 LPA

Explore more jobs

NielsenIQ Salaries in India

Data Processing Analyst 795 salaries	₹0 L/yr - ₹0 L/yr
Data Analyst 468 salaries	₹0 L/yr - ₹0 L/yr
Data Processing Specialist 347 salaries	₹0 L/yr - ₹0 L/yr
Software Engineer 242 salaries	₹0 L/yr - ₹0 L/yr
Research Associate 182 salaries	₹0 L/yr - ₹0 L/yr