Meta Research Scientist I interview questions

Full loop interview including one coding session, an ML systems design session, a PhD behavioral, and one AI assisted coding session. Each session was one hour and spread across two days.

Code screen was code signal and pretty standard: 2 super easy questions then 2 harder questions, one about memory allocation and 1 array based problem. They weren't easy but the problems weren't hard to understand and i dont believe they had hidden test cases