I had a phone screening, followed by two phone interviews.
The entire process went quicker than I thought.
The interviews were difficult but fair. I definitely prepared a lot beforehand, brushing up on my knowledge of Linux, systems, and networking.
I received an offer without an onsite interview, which I don't think is typical for Facebook.
The initial phone screen covered general system topics: DNS, TCP, CLI tools, and so on.
The first phone interview was coding-based.
The subsequent phone interview was heavily focused on Linux, including system calls, signals (term, kill, etc.), and load versus CPU utilization. It also included general computer science concepts.
The following metrics were computed from 155 interview experiences for the Meta Production Engineer role in United States.
Meta's interview process for their Production Engineer roles in the United States is very selective, failing most engineers who go through it.
Candidates reported having very good feelings for Meta's Production Engineer interview process in United States.