First round with HR, Second with hiring manager. I did not pass the second round interview. All the people I spoke to seemed nice. The questions were fair and pretty specific to my experience and past achievements. They also told me more about the specific Meta team.

Systematic and well thought out. As you'd expect with a company of this size, they have designed a well-orchestrated process of events and hoops to jump through. There are a lot of small start-ups that should probably heed from their processes.