What is the main responsibility of a front-end developer?

The main responsibility of a front-end developer revolves around implementing visual elements that users interact with. This role focuses on creating the user interface (UI) and ensuring a seamless user experience (UX) on websites and applications. Front-end developers use languages such as HTML, CSS, and JavaScript to design and build responsive layouts, interactive features, and overall aesthetics that engage users.

By concentrating on the client-side of applications, front-end developers ensure that what users see and interact with is both functional and visually appealing. They collaborate closely with designers to translate their ideas into functional components, enhancing usability and accessibility.

In contrast, other responsibilities mentioned pertain to different areas of web development. Building server-side logic is a task for back-end developers, who handle data processing and server interactions. Managing database systems falls under the purview of database administrators or back-end developers. Lastly, creating network protocols is typically the domain of network engineers and is not directly related to front-end development tasks.