I applied online. The process took 2 weeks.
The process has a coding and SQL round with behavioral bits mixed in. The interviewers give some time at the beginning and end for intros and a few behavioral questions.
The following metrics were computed from 21 interview experiences for the Meta Data Engineer Intern role.
Meta's interview process for their Data Engineer Intern roles is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Meta's Data Engineer Intern interview process.