A CMS web management developer designs, develops, and maintains websites using content management systems (CMS). They create and customize themes, modules, and plugins according to client requirements. They ensure that the website's content is easily editable and manageable. They also focus on enhancing user experience, ensuring website security, optimizing site performance, and improving search engine rankings. Their role involves troubleshooting and resolving issues related to CMS performance, capability, and integration with third-party services. They also update the CMS with new features or improvements, constantly working to enhance the website's functionality and usability.