I applied online. The process took two months.

• Standard two interview screening.
• Five interviews if you pass the screening.

You can prepare for the interview by looking up resources online, because Meta has a fairly consistent process. The only reason for me writing this report is that, despite the recruiters' professionalism throughout, it was quite galling that after a long process and even after passing the hiring bar, I was told they were going to pause the role (though my pass is good for 12 months). I'll post an update if I have one.