Web Developers or programmers are the specialists who deal with and are involved in everything on the Internet such as websites, online stores.
Front-End programming refers to the surface visible to the client, that is, the part from the outside that many of us access is the work of a front-end developer.
Responsible for the way it runs in different devices such as PC, Laptop, Tablet, Phone but also in different operating systems.

He makes sure that all the buttons and links are in their place regardless of the device we are using. It works to create a pleasant surface for the user through colors, pleasant and visible contrasts, graphics, tables, lists, etc.
The content and the way the website, an application, or a mini web market looks are the responsibility of a Font-End developer. Font-End uses technologies such as HTML, Java Script and CSS, to provide a pleasant user experience.

Back-end programming deals with the hidden, invisible part of a website that users don't see and can't interact with and without which Font-end can't function. He is responsible for the speed at which the tasks are carried out inside the website or an application. He writes code that leads to the execution of the commands given by the user through the Font-end interface that stores the data and ensures the correct operation of the site. The technologies used in the work of a back-end developer are PHP, PYTHON, JAVA, NET, RUBY.

For the good functioning of the website in the best parameters, an effective collaboration between FONT-END and BACK-END specialists is needed.
People who have skills in both front-end and back-end development are often called full stack developers. In other words, they have a full range of abilities that can be applied to the user interface and everything that makes it work in the background.
 
As a developer, having both front-end and back-end skills means more opportunities. You will be able to apply for several contract, part-time or full-time jobs. As a freelancer, you will be able to take on multiple projects without being limited to just the front-end or just the back-end.
Differences between front-end, back-end and full-stack.

Front-end developers work on the layout and user interface of the website, and in addition to the programming languages listed above, the front-end developer should have some skills using design tools such as PhotoShop, Sketch or Figma. Front-end developers should also know the basics of web hosting and buying a domain.

Back-end developers, on the other hand, must have critical thinking skills. A backend developer is responsible for designing the systems and how the user will interact with the website.