A full-stack web developer can be defined as a developer or engineer who works with both the front and back ends of a website or application. This means they can lead platform builds that involve databases, user-facing websites, and working with clients during the planning phase of projects. They work on debugging of web application or website. As a full-stack developer, multiple technologies are needed to be known, whether it's about adding images to a web page or creating a database. This gives you an edge over other developers because you can make faster and efficient technical decisions. There are many full stack developer languages dedicated to server-side programming. However, Python is the most popular one. It's a versatile language and finds applications in many fields, including Machine Learning, data science, as well as back-end web development.
A qualified full stack developer should have functional knowledge and capabilities for all aspects involved in building the application. This knowledge includes proficiency in multiple programming languages, such as JAVA, PHP, C #, Python, Ruby, Perl, etc. The popular development languages are generally accompanied by a good development framework, such as JAVA Spring, Kotlin MyBatis, Hibernate, Python Django, PHP thinkphp, yin, nodeJs express and so on.