The Entire process consisted of four rounds:

1. Online Assessment Round
2. Technical Interview Round 1
3. Technical Interview Round 2
4. HR Round

Online Assessment Round

The online test lasted 70 minutes and included four medium-level questions. The cutoff was set at 560 out of 600, and I scored a perfect 600, successfully answering all questions. Anyone with experience in competitive programming would find the questions manageable. In total, approximately 40 students out of over 1000 were selected across all campuses for the next round. We were required to travel to the Vellore campus the following day.

Technical Round 1 (Duration: 1 hour)

In the first round, the interviewer introduced himself and asked me to do the same. He then explained the format of the interview. The focus was on Data Structures and Algorithms (DSA). I was presented with one medium DSA problem, which I solved within 30 minutes. This included writing the code on paper, explaining my thought process, and performing a dry run on the whiteboard. The question was tricky, as the interviewer expected a solution with a time complexity of O(n).

Technical Round 2 (Duration: 1 hour)

Having qualified for the second round, I found that this round was also focused purely on DSA. The format was similar, but this time I had to solve three questions in one hour. When the interviewer introduced himself, I was impressed to learn that he had a LeetCode rating of 2300! Sensing my nervousness, he calmed me down, and we began to converse more casually. The questions were as follows:

1. Next Hotter Temperature (Using a stack)
2. Minimum Stack (O(1) operations)
3. Binary Search + Rolling Hash (I don’t remember the exact question)

I successfully solved the first two questions on paper and explained my solutions on the board. For the third question, I provided a dynamic programming approach with a time complexity of O(n²), but the interviewer was looking for an O(n log n) solution. He mentioned that it could be solved using rolling hash and binary search.

After this round, 11 students qualified for the final HR round.

HR Round (Duration: 1 hour)

The interviewer was a senior software architect at the company. He began with some technical questions related to OOP and DBMS, covering topics such as virtual functions, polymorphism, and normalization. After the technical questions, he asked me to draw a graph of my CGPA from the first semester to the last, inquiring about the reasons for any increases or decreases. This was followed by some behavioral questions.

The next day, the results were announced, and out of all campuses, seven students were selected. I was thrilled to be one of them! It was a great experience with the recruiting team and my friends who supported me throughout the process.

Preparation Tips

1. Codeforces: Essential for clearing coding rounds for these companies.
2. LeetCode: Familiarize yourself with standard questions (practice using Striver’s sheet).
3. CS Fundamentals: Focus on OOP, DBMS, and OS concepts.
4. Honesty: Be genuine during the interview; do not fake your answers (this is the most important tip).

Thank you!