A web developer is someone who creates a website. They usually use a computer program called a web browser to design the look and feel of the website, and then write code to make it work the way they want it to. They also work with different kinds of software to create databases that store information the website needs. Web developers may also be responsible for writing and editing the content on the website, as well as making sure that it works properly on all sorts of devices (like phones, tablets, and computers).