I applied through an employee referral.

The general process is:

• HR call briefing about the process
• OA
• Hackathon Part 1
• Hackathon Part 2

After giving Hackathon Part 1, I was ghosted entirely. Every time I contacted the HR, I was told that the internal Slack channel was not working and that interviewers were not available, which went on for almost two to three months. Then I had to write an email to a group of people including her boss, and as a result, I was contacted the very next day about my availability.

Hackathon Part 2 is one level up from Hackathon Part 1, where we need to modify the previous part's code. It happens on Slack, and your previous round's code is made available. Hackathon Part 2 was scheduled, and I was in contact with the interviewer through Slack. I was asked to explain my code in Hackathon Part 1, which took me 1.5 hours to properly explain everything. Then I was asked to optimize it. I had a few blockers, but when I asked, the interviewer was not very active in responding and took almost 30 to 45 minutes for each query I asked. As a result, although I was able to optimize the code, I was unable to complete the expectations of Part 2. Hence, I got rejected.

N-Ary tree locking and unlocking