I took the OA and passed, then passed the recruiter screen, 1st interview, but unfortunately wasn't taken after the second. I think the biggest thing they look for is people who are extremely 'bullish'. You're a complete engineer brain and don't care about ethics or other stuff.

I had behavioral interviews and then 4 in person interviews. The behavioral was straightforward. There was also a data query interview where they taught you a new "language" and had you execute basic queries in it. Then there was a system design interview. I had two of these. The last one they asked me if I was deployed to the moon to identify new species of alien what kind of system would I build.