It sounds like you like knowing how the whole thing works, end-to-end. At big companies with so much pre-existing code & infra, thats not really possible. Maybe

It sounds like you like knowing how the whole thing works, end-to-end. At big companies with so much pre-existing code & infra, thats not really possible. Maybe a startup would be a better fit for you? Thats one of the things I loved about working at a ~60 person startup, I had visibility and decision making power over all levels of what I was doing. Of course it depends on what your definition of end-to-end is, as the rabbit hole can always go deeper.