Back end Development refers to the server side of development where you are primarily focused on how the site works. Making updates and changes in addition to monitoring functionality of the site will be your primary responsibility. This type of web development usually consists of three parts: a server, an application, and a database. Code written by back end developers is what communicates the database information to the browser. Anything you can’t see easily with the eye such as databases and servers is the work of a back end developer. Back end developer positions are often called programmers or web developers.