[notacoward]

In my experience outside knowledge can actually be a detriment at a FAANG (FB in my case but retired now). They want people who will learn their tools, their ways, etc. so yes, talented but "unformed" people are their ideal candidates in the great majority of cases. Specialists - such as myself - are brought in only as needed, and often find that trying to apply experience gained elsewhere gets them odd looks at best. The NIH is very strong.