A front end web developer develops the visual components of a website that are seen and interacted with by a user. This is also called the user interface. In this job, you work with code such as HTML and JavaScript and utilize CSS (Cascading Style Sheets) to layout web pages. Unlike a back end developer, you focus on more than just performance and function. Your responsibilities include developing appealing yet functional desktop and mobile websites and applications, conducting maintenance and updates, and creating site mockups. These duties require you to work closely with back-end developers and stay updated on new technology, website development, and design trends.