There were 5 rounds:

• DS
• DS
• LLD
• HLD
• HM

The first round was with the Hiring Manager (Amol). He asked me about my projects and day-to-day work. I mentioned that I had not written any unit tests. After this, he gave me a DS problem. I had never seen the problem before, but I worked on it and solved it with optimal time and space complexity within the given time.

He seemed impressed and asked if I had seen the question earlier. I responded, 'No.'

After that, he asked if I had any questions. I asked him about the company. He spent about 10 minutes explaining the company and all the projects the Bangalore office is involved in. The interview ended on a positive note.

After following up with HR multiple times, I received feedback that I was not selected for this round. The panel felt I lacked experience with unit tests.

My resume also did not mention unit tests. I am unsure about their expectations. If unit tests were this critical, they should not have selected my resume for an interview.

I believe they were unclear about their requirements and interviewed many candidates, ultimately rejecting them without a sensible reason. :/

1. Current work and projects
2. Deep dive into current work
3. DS problem: Given an integer K, remove nodes from a binary tree having leaf nodes lesser than K distance from the root.