Meta Sr. Software Engineer interview questions

The interview consisted of a Phone screen followed by a virtual on-site (four interviews). Questions were fairly straight forward (LC medium). System design question threw me off, it wasn't the typical "design an app" question. It can be fairly open ended, so prepare for anything.

Initial Phone Screening: Interviewer called she was nice and helpful. Helped while I am coding. Initial Phone Screening: Interviewer called she was nice and helpful. Helped while I am coding.