With frameworks all over whether backend or front-end, fs development is no more a difficult task as it used to be. I consider myself a fs developer. I started with front-end development but eventually got a job in backend. My current stack is symfony framework - backend and javascript (angularjs , typescript) - frontend. We use doctrine ORM for db management and we seldom touch MySql queries.
Full stack developer is independent and in complex projects like the one we are working on fs developers shine.