A Clean Install developer is responsible for completely erasing the current software or system on a device and installing a new, fresh version of the software. This process removes any potential issues from old software, including bugs, corrupted files, or outdated components. The developer ensures the device runs more efficiently and securely post-installation. They also typically backup essential data before the clean install to prevent data loss. This role requires expertise in the specific software or system being installed, problem-solving skills, and a meticulous approach to avoid any installation errors.