I was contacted through a recruiter for this opportunity. They scheduled a call with the company's co-founder on the same night.

After discussing my current and past work, he also explained the role and responsibilities to me. I was called for a face-to-face interview three weeks later.

There were three rounds in total. I was told one round would be cultural and behavioral, taken by a VP, and the other two would be technical. Sadly, even for the technical rounds, not one question was asked from my domain, which was totally unexpected.

The person who took one technical round was too unprofessional. He was not paying attention to what I was saying. All he did was show off what they are doing and ask me how I would solve their unsolved problems.

I tried my best answering him, but most of the time, he was looking outside the room, signaling his friends, and making me repeat myself, saying he didn't listen properly.

Message to HR: Please ensure that the people on the panel are at least qualified to talk nicely to others. It doesn't matter how technically good they are. They represent the company when they interview people, and this directly reflects on the company's image.

What was the biggest mistake in your career?