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Virtusa Consulting Services Data Engineer Interview Questions, Process, and Tips

Updated 31 Dec 2024

Top Virtusa Consulting Services Data Engineer Interview Questions and Answers

  • Q1. What is the difference between the reduceBy and groupBy transformations in Apache Spark?
  • Q2. What is the difference between RDD (Resilient Distributed Datasets) and DataFrame in Apache Spark?
  • Q3. What is PySpark, and can you explain its features and uses?
View all 7 questions

Virtusa Consulting Services Data Engineer Interview Experiences

4 interviews found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
No response
Round 1 - Technical 

(4 Questions)

  • Q1. What is the architecture of Apache Spark?
  • Ans. 

    Apache Spark architecture includes a cluster manager, worker nodes, and driver program.

    • Apache Spark architecture consists of a cluster manager, which allocates resources and schedules tasks.

    • Worker nodes execute tasks and store data in memory or disk.

    • Driver program coordinates tasks and communicates with the cluster manager.

    • Spark applications run as independent sets of processes on a cluster, coordinated by the SparkCon...

  • Answered by AI
  • Q2. What is the difference between the reduceBy and groupBy transformations in Apache Spark?
  • Ans. 

    reduceBy is used to aggregate data based on key, while groupBy is used to group data based on key.

    • reduceBy is a transformation that combines the values of each key using an associative function and a neutral 'zero value'.

    • groupBy is a transformation that groups the data based on a key and returns a grouped data set.

    • reduceBy is more efficient for aggregating data as it reduces the data before shuffling, while groupBy shu...

  • Answered by AI
  • Q3. What is the difference between RDD (Resilient Distributed Datasets) and DataFrame in Apache Spark?
  • Ans. 

    RDD is a low-level abstraction representing a distributed collection of objects, while DataFrame is a higher-level abstraction representing a distributed collection of data organized into named columns.

    • RDD is more suitable for unstructured data and low-level transformations, while DataFrame is more suitable for structured data and high-level abstractions.

    • DataFrames provide optimizations like query optimization and code...

  • Answered by AI
  • Q4. What are the different modes of execution in Apache Spark?
  • Ans. 

    The different modes of execution in Apache Spark include local mode, standalone mode, YARN mode, and Mesos mode.

    • Local mode: Spark runs on a single machine with one executor.

    • Standalone mode: Spark runs on a cluster managed by a standalone cluster manager.

    • YARN mode: Spark runs on a Hadoop cluster using YARN as the resource manager.

    • Mesos mode: Spark runs on a Mesos cluster with Mesos as the resource manager.

  • Answered by AI

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Data Engineer Interview Questions & Answers

user image Anonymous

posted on 11 Dec 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. What is PySpark, and can you explain its features and uses?
  • Ans. 

    PySpark is a Python API for Apache Spark, used for big data processing and analytics.

    • PySpark is a Python API for Apache Spark, a fast and general-purpose cluster computing system.

    • It allows for easy integration with Python libraries and provides high-level APIs in Python.

    • PySpark can be used for processing large datasets, machine learning, real-time data streaming, and more.

    • It supports various data sources such as HDFS, ...

  • Answered by AI
  • Q2. What is the difference between PySpark and Python?
  • Ans. 

    PySpark is a Python API for Apache Spark, while Python is a general-purpose programming language.

    • PySpark is specifically designed for big data processing using Spark, while Python is a versatile programming language used for various applications.

    • PySpark allows for distributed computing and parallel processing, while Python is primarily used for sequential programming.

    • PySpark provides libraries and tools for working wit...

  • Answered by AI

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Data Engineer Interview Questions & Answers

user image Anonymous

posted on 15 Feb 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. What is with clause in SQL ?
  • Ans. 

    WITH clause in SQL is used to create temporary named result sets that can be referenced within the main query.

    • WITH clause is used to improve the readability and maintainability of complex SQL queries.

    • It allows creating subqueries or common table expressions (CTEs) that can be referenced multiple times.

    • The result sets created using WITH clause can be used for recursive queries, data transformation, or simplifying comple...

  • Answered by AI

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 29 Jan 2023

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Jan 2022. There were 2 interview rounds.

Round 1 - Aptitude Test 

Coding Test and Web Development

Round 2 - Technical 

(4 Questions)

  • Q1. Project related questions
  • Q2. Tell about your Projects
  • Ans. 

    I have worked on various projects involving data engineering, including building data pipelines and optimizing data storage.

    • Built a data pipeline using Apache Kafka and Apache Spark to process and analyze real-time streaming data.

    • Optimized data storage by implementing data partitioning and indexing techniques in a large-scale data warehouse.

    • Developed ETL processes to extract data from various sources, transform it, and...

  • Answered by AI
  • Q3. Tell me about yourself
  • Ans. 

    I am a data engineer with experience in designing and implementing data pipelines for large-scale projects.

    • Experienced in building and optimizing data pipelines using tools like Apache Spark and Hadoop

    • Proficient in programming languages like Python and SQL

    • Skilled in data modeling and database design

    • Familiar with cloud platforms like AWS and GCP

    • Strong problem-solving and analytical skills

    • Effective communicator and team

  • Answered by AI
  • Q4. Questions about core technologies

Interview Preparation Tips

Interview preparation tips for other job seekers - Have idea on multiple technologies like Java , Html , Css

Virtusa Consulting Services interview questions for designations

 Senior Data Engineer

 (2)

 Big Data Engineer

 (2)

 Data Scientist

 (1)

 Data Analyst

 (1)

 Data Migration Specialist

 (1)

 Software Engineer

 (40)

 QA Engineer

 (9)

 Technology Engineer

 (5)

Data Engineer Jobs at Virtusa Consulting Services

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Interview questions from similar companies

I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Oops Concepts and Data Structure Questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Oops And Data Structure, Collection.

I was interviewed in Oct 2020.

Interview Questionnaire 

3 Questions

  • Q1. Final round is HR. In this round they will explain the working hours, CTC, etc and some set of HR questions will be also expected here
  • Q2. Tell me some of your strengths Weaknesses Where would you see yourself after 5 years Etc
  • Q3. Followed by 1st round written Examination F2F Technical interview is done. In this round we any expect all the technical questions of our subjects and the interviewer will check for our personality, commun...

Interview Preparation Tips

Interview preparation tips for other job seekers - All the Best Guys.prepare well and face the interview.

I applied via Campus Placement and was interviewed before Feb 2020. There were 6 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Was interviewed as fresher?
  • Q2. Written test conducted? with verbal ability test ? GD
  • Q3. How would u deal with a problematic situation when you are working in a team?
  • Q4. What are your plans about higher studies?

Interview Preparation Tips

Interview preparation tips for other job seekers - it was basic with apptiude test and attitiude test.

I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. They asked about dbms questions in the form of table formate
  • Q2. They asked code for some python program

Interview Preparation Tips

Interview preparation tips for other job seekers - Firstly they conducted computer based technical exam and then after qualifying that then we will go for face face interview and then lastly HR round will be held.

I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Wap of bubble sort
  • Ans. 

    Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

    • Start from the first element and compare it with the next element

    • If the next element is smaller, swap them

    • Repeat this process for all elements in the array

    • Continue this process until no more swaps are needed

  • Answered by AI
  • Q2. Wap of prime number
  • Ans. 

    A program to print all prime numbers

    • Take input from user for range of numbers

    • Loop through the range and check if each number is prime

    • Print the prime numbers

  • Answered by AI
  • Q3. What is hashmap?
  • Ans. 

    Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

    • Hashmap uses a hash function to map keys to indices in an array.

    • Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

    • Examples of hashmap implementations include Java's HashMap class and Python's dict type.

  • Answered by AI
  • Q4. What is inheritance
  • Ans. 

    Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

    • Inheritance allows code reuse and promotes code organization.

    • The existing class is called the parent or superclass, and the new class is called the child or subclass.

    • The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

    • For...

  • Answered by AI
  • Q5. Call by value and call by reference

Interview Preparation Tips

Interview preparation tips for other job seekers - Be yourself

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Basic mathematical questions

Round 2 - Technical 

(2 Questions)

  • Q1. What was your last sem project ? write code for fibonacci series write code for swapping two numbers
  • Ans. 

    I wrote code for Fibonacci series and swapping two numbers in my last semester project.

    • For Fibonacci series, I used a loop to generate the series up to a given number.

    • For swapping two numbers, I used a temporary variable to store one value while swapping the other.

    • Both codes were written in C++ language.

    • I also added error handling to ensure the input values were valid.

  • Answered by AI
  • Q2. Write code to find if input is palindrome tell me about yourself

Interview Preparation Tips

Interview preparation tips for other job seekers - For freshers interview the technical round will be all about your past project ,the technology you are aware about and your overall education and interests.

Skills evaluated in this interview

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Virtusa Consulting Services Interview FAQs

How many rounds are there in Virtusa Consulting Services Data Engineer interview?
Virtusa Consulting Services interview process usually has 1-2 rounds. The most common rounds in the Virtusa Consulting Services interview process are Technical, Resume Shortlist and Aptitude Test.
How to prepare for Virtusa Consulting Services 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 Virtusa Consulting Services. The most common topics and skills that interviewers at Virtusa Consulting Services expect are Python, SQL, Big Data, Data Modeling and Oracle.
What are the top questions asked in Virtusa Consulting Services Data Engineer interview?

Some of the top questions asked at the Virtusa Consulting Services Data Engineer interview -

  1. What is the difference between the reduceBy and groupBy transformations in Apac...read more
  2. What is the difference between RDD (Resilient Distributed Datasets) and DataFra...read more
  3. What is PySpark, and can you explain its features and us...read more

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Virtusa Consulting Services Data Engineer Interview Process

based on 4 interviews

Interview experience

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Virtusa Consulting Services Data Engineer Salary
based on 170 salaries
₹4.2 L/yr - ₹14.4 L/yr
18% less than the average Data Engineer Salary in India
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based on 20 reviews

3.5/5

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3.4

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3.8

Work-life balance

3.0

Salary

3.2

Job security

2.9

Company culture

2.8

Promotions

3.1

Work satisfaction

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