As opposed to their front-end counterparts, back-end engineers do the work that is rarely seen by the user. Typically, they’re responsible for creating and maintaining technology at the back end of a website. Backend Engineers are those who are responsible for the building blocks of an application, and this role is one of the highest paying jobs a techie can opt for. They work with APIs, servers, and databases to perform requests made by the user. They work collaboratively with frontend engineers, product managers, and designers. A backend engineer should have knowledge of GitHub. When it comes to backend development, this career has seen a 21% growth rate in recent years.