Application I applied through other source. I interviewed at HackerRank (London, England) in Jun 2022 It was quite boring, a lot of one-sided conversation of unnecessary stuff. No technical questions asked. I never expected this kind of useless interview from such a reputed company

Don't bother applying. They are going to reject you anyway. There's no reason to struggle to get in. I feel that the moment I told my salary expectations I was rejected. The first question was my current CTC and salary expectations.