The back end developer must have a strong understanding of server-side languages (such as PHP, Java, Python, and Ruby), as well as database technologies (such as MySQL, MongoDB, and Cassandra). They must also be able to integrate the front-end and back-end components of a website or application. If you’re interested in becoming a back end developer, then keep reading! This article will explain everything you need to know about the role, including the skills you need to succeed, the salary you can expect to earn, and the job outlook for the future.