I interviewed for their generalist interviewer offer that they were advertising heavily a couple of years ago. I aced the lengthy and nontrivial generalist quiz, and then waited for a callback.

Two weeks later I sent a polite email to check in. No reply. Repeat two weeks later.

About two months later I received a reply that said the positions were filled, but that they would love to offer me as a candidate to US companies. This was useless to me as I live in Europe.

I believe the interviewer position was a sham, and they were just eating people's time in order to get detailed developer data.