As a front-end developer, their main job is to create the visible parts of websites or web applications that users interact with directly. They’ll use languages like HTML, CSS, and JavaScript to build user interfaces that are visually appealing, intuitive to use, and responsive across different devices. Their responsibilities include translating design mockups into code, optimizing web performance, and ensuring cross-browser compatibility. They’ll collaborate closely with designers and back-end developers to integrate front-end components with server-side functionality.