A Front-End Developer is responsible for developing new user-facing features, determining the structure and design of web pages, building reusable codes, optimizing page loading times, and using a variety of markup languages to create the web pages.Front-end developers use HTML, CSS, and JavaScript to build the client side of a website. They are responsible for building the visual elements on a page, such as the layout, buttons, menus, forms, and other features that users will see and interact with when they visit a webpage.