First contact with a technical recruiter. Then two technical interviews (these could be combined into one). Then an on-site interview with five different engineers. It ranges from coding to systems design, going through system questions (mainly on Linux) and networking. There was a lunch break with a Principal Engineer to talk about the job.
How to restart servers (e.g., after a security update) while limiting the impact on response time.
What is going on behind the scenes when you type ls on the prompt of a shell.
The following metrics were computed from 1 interview experience for the Meta Principal Engineer role in United States.
Meta's interview process for their Principal Engineer roles in the United States is incredibly easy as the vast majority of engineers get an offer after going through it.
Candidates reported having very good feelings for Meta's Principal Engineer interview process in United States.