I had my interview with Meta in March. I'll say it was the best interview experience I had so far for any company. Here are the steps:

1. Onscreen whiteboarding (zoom):
   it is a 45 min straight coding round which consist of 2 LC medium to hard questions. You don't have to run your code just show your algorithm and psudo code.
2. Final round:
   The final round consist of 4-5 round among them minimum 1 max 2 behaborial and the others are technical. Also one round system design with a software architect or senior engineer. Mine was 3 conding and one behavorial round. The technical ones were 45 min (2 coding questions) and the behavorial one was 50 min long. The system design one was 45 min long as well. So, 2 conding, 1 system desin, and 1 behaborial = 4 round. I actually had 2 behaborial round but one got cancelled.
   The coding round are same as the onscreen and the system design is like drawing all diagram on Excaliber.io or something like that. It's like a virtual white board.

I passed the on screen and almost passed the final rounds but I guess I didn't cause I didn't got selected lol. But my experience with them was pretty awesome. The recruiter were always in touch the inerviewers were pretty chill and they even has mock interviews which I was able to sign up for. I'll def try again as the recruiter said most interwiewee tries more than once.

Questions: Most of the questions I got asked were LC medium to Medium hard I'll say. I signed a NDA form hence can't disclose all the questions but you can reach to me on my social media if you need them or want to know more about the interview experience:

Linkedin: https://www.linkedin.com/in/mohammad-karim-3b1242141/
Instagram: https://www.linkedin.com/in/mohammad-karim-3b1242141/

During mock interview session we asked the interviewers about dynamic programming and they said Meta doesn't ask DP questions anymore. So if you are preparing for that don't study DP questions

Even tho I didn't pass the fianl round I hope this helps someone to get an idea about how Meta interview looks like.
Good luck to everyone!!