A qualified full stack developer should have functional knowledge and capabilities for all aspects involved in building the application. 

• You need to be proficient in multiple programming languages, such as JAVA, PHP, C #, Python, Ruby, Perl, etc.
• Use development frameworks and third-party libraries.
• Front-end technologies are becoming more and more important in today’s project and product development.
• Any product or project needs a database to store data.
• The design skill is very important, the principle and skill of basic prototype design, UI design, UX design are also needed to understand.

Full stack developers have a broader angle of views and a more active mindset. 

They can provide help to everyone in the team and greatly reduce the time and technical costs of team communication, technology docking. Some of them who claim to be “full stacks developer” are ...