Coding rounds straightforward, Systems (OS) and PE Basics need lots of studying since they can ask a large range of questions and in depth. Process cut short due to hiring pause.
Positive experience
Difficult interview
Application
I interviewed at Meta (Menlo Park, CA)
Interview
There are 2 rounds, first has PE basics and coding, second has PE basics, coding and Behavioral. Learn linux, OS, Networking in detail. They dig deep into whatever u say. Coding is usually easy, prepare file parsing questions
There were 6 roudns in total, the last round was a systems round where they said it would be 20 mins of theory and 20 mins of technical but they just grilled me on OS theory, think this is where I failed the process