Need advice for onsite interview at Meta

I worked at Meta for 8 years and did 400 and something interviews. What do you want to know? Notes - two more algo interviews very similar to the tech screen, no harder - system design - gauging your level st Meta based on the scope of systems you've worked on, testing your understand and communication around very complex systems. - behavioral with engineer - gauging the scope of past responsibility and looking for red flags. For the algos - no small talk, and don't try to be friends with the interviewer, just write good code - practice whiteboard style / non compiling code without the aid of editors - be ready for followups and twists so don't rush your code if you know the problem, make sure you understand what every line of code is doing because you might get asked interesting questions to test for that - communicate continuously - write "clean code" I could write a novel here so ask followups.