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Infosys Software Development Engineer Interview Questions and Answers

Updated 28 Jul 2021

Infosys Software Development Engineer Interview Experiences

3 interviews found

I applied via Company Website and was interviewed in Jan 2021. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. What are React Lifecycle methods ?
  • Ans. 

    React Lifecycle methods are special methods that are invoked at different stages of a component's life cycle.

    • Mounting: constructor, render, componentDidMount

    • Updating: render, componentDidUpdate

    • Unmounting: componentWillUnmount

    • Error Handling: componentDidCatch

    • Other methods: shouldComponentUpdate, getDerivedStateFromProps, getSnapshotBeforeUpdate

  • Answered by AI
  • Q2. Explain difference between class and functional components.
  • Ans. 

    Class components are ES6 classes while functional components are functions.

    • Class components have state and lifecycle methods while functional components don't.

    • Functional components are simpler and easier to read and test.

    • Functional components are preferred for simple UI components while class components are used for complex UI components.

    • Functional components don't have 'this' keyword while class components do.

    • Function

  • Answered by AI
  • Q3. Unit Testing tools like Jest, Enzyme.

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview was quite easy. One with basic knowledge of React can clear interview easily.

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Core java, multi threading.

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Q5. Have you worked on cloud technology? Architecture of cloud

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

Interview Questionnaire 

1 Question

  • Q1. How to interview face

Interview Preparation Tips

Interview preparation tips for other job seekers - Interviewer are friendly

Interview questions from similar companies

I was interviewed before Sep 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

  • Q1. 

    Sum of Two Numbers Represented as Arrays

    Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...

  • Ans. 

    Given two numbers represented as arrays, calculate their sum and return the result as an array.

    • Iterate through the arrays from right to left, adding digits and carrying over if necessary

    • Handle cases where one array is longer than the other by considering the remaining digits

    • Ensure the final sum array does not have any leading zeros

  • Answered by AI
Round 2 - Face to Face 

Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round 3 - HR 

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.

Interview Preparation Tips

Eligibility criteriaAbove 60 %Wipro Limited interview preparation:Topics to prepare for the interview - OOPS, Data Structures, Database Concepts, Coding problemsTime required to prepare for the interview - 2-3 monthsInterview preparation tips for other job seekers

Tip 1 : Practice atleast 2-3 Coding problems daily so your logic building becomes stronger.
Tip 2 : Exercise problems based on OOPS concepts and others too.
Tip 3 : If you can have your own project built, then it's the major point and will act as a plus point.

Application resume tips for other job seekers

Tip 1 : Your resume should be in standard form, short and simple will be more effective.
Tip 2 : Whatever you have learned, you need to mention it in your resume as that will be your primary source of selection and having project on your resume is important.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Job Portal and was interviewed before Apr 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Solid principles in c#
  • Ans. 

    Solid principles are a set of design principles for writing maintainable and scalable code in C#.

    • Single Responsibility Principle (SRP) - a class should have only one reason to change

    • Open/Closed Principle (OCP) - a class should be open for extension but closed for modification

    • Liskov Substitution Principle (LSP) - derived classes should be substitutable for their base classes

    • Interface Segregation Principle (ISP) - client...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - good company for freshers as well as beginners

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Jul 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Description of project
  • Ans. 

    The project involved designing and implementing a new network infrastructure for a large corporation.

    • Conducted a thorough analysis of the existing network infrastructure

    • Designed a new network architecture that met the company's needs

    • Implemented the new network infrastructure with minimal disruption to business operations

    • Tested and optimized the new network to ensure optimal performance

    • Provided ongoing support and maint

  • Answered by AI
  • Q2. Your previous experince

Interview Preparation Tips

Interview preparation tips for other job seekers - Well prepare for your resume

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

Interview Questionnaire 

1 Question

  • Q1. The questions were on front end web development questions with managerial interview

Interview Preparation Tips

Interview preparation tips for other job seekers - The overall experience was good. The interview was on technical and managerial skills based on the experience gained.

I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Simple program
  • Q2. I wrote a simple program in C

Interview Preparation Tips

Interview preparation tips for other job seekers - Be bold and confident

I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Tell me about Yourself, some questions related to machine learning, and I was asked more questions to differentiate like differences between ml and ai, python and c, c and java and procedural and functiona...

Interview Preparation Tips

Interview preparation tips for other job seekers - Get a complete grip on your resume and be confident about what you say, If you don't know the answer it is okay to agree that you don't know the answer so that interviewer can ask the next questions.

I was interviewed before Jun 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 180 minutes
Round difficulty - Easy

It was an mcq + coding round. There were aptitude and ouput based question in mcq. And coding questions were easy

  • Q1. 

    Find the Duplicate Number Problem Statement

    Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...

  • Ans. 

    Find the duplicate number in an array of integers from 0 to (N-2).

    • Iterate through the array and keep track of the frequency of each number using a hashmap.

    • Return the number with a frequency greater than 1 as the duplicate number.

    • Time complexity can be optimized to O(N) using Floyd's Tortoise and Hare algorithm.

  • Answered by AI
  • Q2. 

    Reverse String Operations Problem Statement

    You are provided with a string S and an array of integers A of size M. Your task is to perform M operations on the string as specified by the indices in array A...

  • Ans. 

    Given a string and an array of indices, reverse substrings based on the indices to obtain the final string.

    • Iterate through the array of indices and reverse the substrings accordingly

    • Ensure the range specified by each index is non-empty

    • Return the final string after all operations are completed

  • Answered by AI
Round 2 - Video Call 

Round duration - 60 Minutes
Round difficulty - Easy

It was technical + hr round. there were 2 people as interviewer. They stated from intro and asked some basic puzzles and hr questions. After that they asked about my projects, technologies and some ds algo and dbms questions.

Interview Preparation Tips

Eligibility criterianaAccenture interview preparation:Topics to prepare for the interview - Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic ProgrammingTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice aptitude
Tip 2 : Focus on practicing coding
Tip 3 : Learn from mistakes

Application resume tips for other job seekers

Tip 1 : Mention some projects that you have done
Tip 2 : Try to have skills that are required for the role

Final outcome of the interviewSelected

Skills evaluated in this interview

Infosys Interview FAQs

What are the top questions asked in Infosys Software Development Engineer interview?

Some of the top questions asked at the Infosys Software Development Engineer interview -

  1. What are React Lifecycle method...read more
  2. Explain difference between class and functional componen...read more
  3. Unit Testing tools like Jest, Enzy...read more

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Infosys Software Development Engineer Salary
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₹3.6 L/yr - ₹10 L/yr
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