A CMS developer designs, creates, and modifies web applications, primarily focusing on content management systems. They build user-friendly interfaces that allow non-technical users to publish, edit, and manage digital content. They work with languages such as PHP, .NET, or Java, and use CMS platforms like WordPress, Drupal, or Joomla. They tailor these systems to meet specific business needs, often integrating with other software or databases. CMS developers also troubleshoot issues, maintain systems, and update software as needed. They often collaborate with other developers, designers, and stakeholders, ensuring that the CMS is functional, secure, and user-friendly.