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Polestar Solutions & Services India Data Engineer Interview Questions and Answers

Updated 13 Feb 2025

Polestar Solutions & Services India Data Engineer Interview Experiences

1 interview found

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 13 Feb 2025

Interview experience
1
Bad
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed before Feb 2024.

Round 1 - Aptitude Test 

In this round, you will encounter 40 questions, and you need to answer approximately 80% of them correctly.

Round 2 - Technical 

(1 Question)

  • Q1. Basic sql queries, permutations and combinations questions, simple maths from probability, projects mentioned in your resume.
Round 3 - HR 

(1 Question)

  • Q1. Just a normal conversation, no need to worry if you cleared the technical round already

Interview Preparation Tips

Interview preparation tips for other job seekers - Avoid pursuing this opportunity if you are from a reputable college; instead, wait for other technical companies to visit your college for placement and apply to those.

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 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 Company Website and was interviewed in Oct 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. What is recursion ? what is inheritance? what is heap? write a code to find the largest element in an array?
  • Ans. 

    Recursion is a process in which a function calls itself. Inheritance is a mechanism in OOP where a class inherits properties of another class. Heap is a region of memory used for dynamic memory allocation.

    • Recursion can be used to solve problems that can be broken down into smaller sub-problems.

    • Inheritance allows for code reuse and helps in creating a hierarchy of classes.

    • Heap is used for dynamic memory allocation in la...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Do not loose your confidence till the end of the interview and be clear with your voice .

Skills evaluated in this interview

I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Introduction your self in interview

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview should be very easy and comfortable to the students. And be confident at the infront of interviewer
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
4-6 weeks
Result
Selected Selected

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

Round 1 - Aptitude Test 

Basic logical reasoning and verbal questions . Easy to clear

Round 2 - HR 

(2 Questions)

  • Q1. 1.Tell me about yourself? 2.What are Your achievements?
  • Q2. 3. Your strengths? 4. How did you face a situation using your key skills?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Confident . Care to explain more instead of giving single word answers . Good luck

I applied via Naukri.com and was interviewed in Nov 2020. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Questions based on the CV we kept
  • Q2. Questions related to powershell, storages, networking in azure IaaS, NSG

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare whatever u kept in CV and the basics

I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Routing and switching related

Interview Preparation Tips

Interview preparation tips for other job seekers - Do your best. Study well.
Its all about God's grace.
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Polestar Solutions & Services India Interview FAQs

How many rounds are there in Polestar Solutions & Services India Data Engineer interview?
Polestar Solutions & Services India interview process usually has 3 rounds. The most common rounds in the Polestar Solutions & Services India interview process are Aptitude Test, Technical and HR.
How to prepare for Polestar Solutions & Services India 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 Polestar Solutions & Services India. The most common topics and skills that interviewers at Polestar Solutions & Services India expect are AWS.
What are the top questions asked in Polestar Solutions & Services India Data Engineer interview?

Some of the top questions asked at the Polestar Solutions & Services India Data Engineer interview -

  1. Basic sql queries, permutations and combinations questions, simple maths from p...read more
  2. Just a normal conversation, no need to worry if you cleared the technical round...read more

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