A Front End Experience Developer designs and implements user-facing features for websites or applications. They use coding languages like HTML, CSS, and JavaScript to create visually pleasing and easy-to-navigate interfaces. Their work is crucial for user engagement as they ensure the website is responsive, accessible, and works seamlessly across different devices and browsers. They also perform debugging, maintain software workflow management, and collaborate with back-end developers to improve usability. Moreover, they might prototype and iterate designs, conduct user testing, and incorporate feedback to enhance user experience. Their goal is to provide an optimal, user-friendly experience.