I don't see how that is actually doable all the time. In my short career I have moved from embedded c / c++ game engine / full stack / DBA / backend. All at dif

I don't see how that is actually doable all the time. In my short career I have moved from embedded c / c++ game engine / full stack / DBA / backend. All at different jobs with the previous manager not knowing I actually knew how to do the next job, if they were asked anything other than generic questions I would have sounded like a fraud.