Infosys Technologies Limited interview experience Real time questions & tips from candidates to crack your interview

SDE - Intern

Infosys Technologies Limited
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2 rounds | 2 Coding problems

Interview preparation journey

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Journey
I always wanted to work as a Software Engineer in a reputed MNC like Infosys. I started my journey by focusing on the basics and understanding core concepts step by step. Initially, I was unsure about the right path, but I stayed consistent, kept learning, and improved my problem-solving skills. With patience, discipline, and self-belief, I found my way into the MNC environment. This journey taught me that starting from basics and staying consistent can truly lead to big opportunities.
Application story
I applied for the role through the company’s official careers portal after regularly tracking opportunities at reputed MNCs. After submitting my application, I received communication regarding the next steps through email. The overall process was well-structured, and all updates, instructions, and interview details were shared clearly in advance, which helped me prepare in an organized manner.
Why selected/rejected for the role?
I was selected because of my strong fundamentals, consistent preparation, and the practical projects mentioned on my resume, which demonstrated my problem-solving ability and willingness to learn.
Preparation
Duration: 4 months
Topics: Data Structures, Algorithms, OOPS, DBMS, Operating Systems, C++ Programming, SQL
Tip
Tip

Tip 1: Build strong fundamentals in core concepts before moving to advanced topics.
Tip 2: Practice coding and problem-solving regularly to improve logic and confidence.
Tip 3: Stay consistent, revise concepts frequently, and believe in your preparation.

Application process
Where: Company Website
Eligibility: NA, (Stipend: 15k per month)
Resume Tip
Resume tip

Tip 1: Focus on showcasing strong projects, practical skills, and technologies you have actually worked on.
Tip 2: Keep the resume concise, well-structured, and tailored to the job role instead of adding unnecessary details.

Interview rounds

01
Round
Medium
Online Coding Interview
Duration180 minutes
Interview date18 Jun 2025
Coding problem2

Timing: The actual assessment was conducted in the morning, while the mock assessment was scheduled in the evening. The test duration was 30 minutes.
Environment: It was a remote online assessment, and the environment was structured and well-managed.
Other significant activity: A mock assessment was provided before the actual test. The test date and instructions were shared via email 2–3 days in advance, which helped in preparation.
Interviewer: There was no direct interview at this stage as it was an assessment-based round.

1. Digit Sum Pairs

Easy
0/40

You are given a non-empty array of unique, non-zero positive integers. Your task is to find the number of unique pairs of integers from this array where both numbers in the pair have the same sum of their digits.


For example, the number 23 has a digit sum of 2 + 3 = 5, and the number 50 also has a digit sum of 5 + 0 = 5. Therefore, (23, 50) would be a valid pair.


You need to calculate and print the total count of such unique pairs. If no such pairs can be formed, you should print -1.


Problem approach

Tip 1: Write a helper function to calculate the sum of digits of a number.
Tip 2: Use a map or grouping technique to store numbers based on their digit sums.
Tip 3: Carefully handle edge cases where no valid pair is possible.

Try solving now

2. Duplicate Character Counter

Easy
0/40

You are given a string S containing only lowercase English alphabets. Your task is to count the number of distinct characters that appear more than once in the string.


If no character repeats (i.e., every character appears exactly once), you should print -1. Otherwise, print the count of distinct characters that have duplicates.


Problem approach

Tip 1: Traverse the string and store the frequency of each character using a hash map or array of size 26.
Tip 2: Check which characters have a frequency greater than 1.
Tip 3: Count only distinct repeating characters, not total repetitions.

Try solving now
02
Round
Easy
Group Discussion
Duration60 minutes
Interview date24 Jun 2025
Coding problem0

Topic of Discussion: “Will AI replace human engineers?”
Timing: The round was held during normal daytime hours.
Environment: The environment was calm, professional, and well managed.
Other Activities: This was a group discussion round focused on communication skills, clarity of ideas, and confidence while speaking in a group.
Interviewer/Evaluation: There was no personal interview in this round. Evaluators observed participation and communication. In the end, we were asked why we wanted this internship.

I stayed calm and listened carefully to others before speaking. I shared my points clearly, supported my ideas with logic, and made sure to respect others’ opinions. I tried to contribute positively to the discussion without interrupting anyone.

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

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