In the context of web development, I've always thought of full stack as: deep knowledge of front end, more than one back end language/framework, database optimi

In the context of web development, I've always thought of full stack as: deep knowledge of front end, more than one back end language/framework, database optimization, networking and linux system administration, and a little bit of graphic design sense. If you can ship a professional-looking and scalable app alone, you can call yourself a full stack web developer. If you're working with embedded systems, obviously the definition changes.