A Content Management System (CMS) developer designs and develops software systems that allow users to create, manage, and modify digital content on websites. They work with CMS platforms like WordPress, Drupal, or Joomla, customizing them according to client needs. Their role involves coding, website design, troubleshooting, and integrating plugins or modules for added functionalities. They also ensure the CMS is user-friendly and the website's architecture is optimized for SEO. Furthermore, they are responsible for maintaining site security, conducting regular updates, and resolving any technical issues that may arise. They collaborate closely with other team members such as content creators and digital marketers.