Backend developers build code that allows a database and an application to communicate with one another. Backend developers take care of and maintain the back end of a website, including databases, servers, and apps, and they control what you don’t see.
Node.js developers deploy and maintain network applications. They manage the exchange of data between servers and users, develop back-end components, and connect applications with other web services. They also support front-end developers by integrating web-based applications.