A web developer handles the functional part of a site, which includes the integration of interactive features and necessary infrastructure. He determines the page layout and tests the usability of the site. He is responsible for providing convenient navigation where the user can easily go to the right pages. His aim is to do the coding in the manner to integrate designs to improve loading speed and ensure the integrated applications are working well.
The front end developers take care of the maintenance, performance, version, mobile-friendliness, compatibilities, and collaborations with the back end, while, the back-end teams handle the data and the server-side aspects.