A Front End Developer crafts user-facing features, ensuring a seamless, engaging user experience. Key responsibilities include designing responsive layouts, optimizing applications for performance, and collaborating with UX/UI designers. Proficiency in HTML, CSS, JavaScript, and frameworks like React or Angular is essential. Typically, they work in agile teams, collaborating with back-end developers and product managers. Growth opportunities include senior developer roles, project management, or specialization in UX design.