Google

It is a very interesting process. There were two technical interviews, where they asked technical questions that should be answered by coding a solution in your preferred language (usually C, C++, Java, or Python).

The interviewing process was extremely long (6 months), and there was almost no feedback about my candidacy status. I thought that I was discarded during the process, but I actually got an offer, and they refused to negotiate.

I was summoned, but the interview itself never happened. I didn't receive any further information after that, I waited, and I refused another offer in the hope of being called again.