I applied online for this job. The process took almost a month. I attempted 4 rounds in total. The first was a simple HR call asking for basic details, technical skills etc. The next round was a technical interview with 2 engineers over a video call. Followed by this was a codility challenge. Post that was a live coding session. I had received a call from the HR prior to this round briefing about what to expect. HR had mentioned that they understand that an optimal solution might not be possible to achieve for both coding problems that will be asked in 50mins, so recommended to talk to interviewers as much as possible and try to provide solutions to both of them. For this live coding session, I was shared a wrong zoom url and i had wasted almost 15-20 mins writing email back to the HR and getting the valid interview url. Considering this fact and keeping in mind the remaining time, i provided working solutions to both the coding problems. I also explained how the given solutions can be optimized. However, the feedback that i got was the solutions provided were not optimal and therefore they won't be proceeding further. Well, that didn't sound fair to me.