Alternatively, programmers interested in server-side development work in backend development. They are mainly responsible for the functionality of the application. Developers who choose to pursue a career in backend development have a range of programming languages to choose from and even more frameworks for each language. Beginners may be overwhelmed with the variety of languages and their libraries. Unless they are expected to work with a specific language required by their company, they can make their own choice and decide which language and frameworks would be best for their taste and their specific projects.