One phone call and one onsite, with 3 technical and 1 behavioral round.
Phone: Prepare and practice medium-level algorithm questions (hint: LeetCode).
For SQL, practice on multiple sites (LeetCode, HackerRank).
Take as much time as you need to feel confident in either topic. I took a month.
Onsite: The recruiter gives you the format, which is quite precise. Pay very close attention to the prep tips given by your recruiter.
Prepare intensely based on that.
The onsite is indeed much harder and requires your basics to be very clear. Be ready to justify whatever you say.
Each round can get quite intense; there are a lot of questions asked. Oh, and go prepared with a few questions for EACH person you are going to meet.
Data modeling questions.
Prepare for many-to-many data modeling well.
The following metrics were computed from 82 interview experiences for the Meta Data Engineer role in Menlo Park, California.
Meta's interview process for their Data Engineer roles in Menlo Park, California is very selective, failing most engineers who go through it.
Candidates reported having very good feelings for Meta's Data Engineer interview process in Menlo Park, California.