An Active Directory developer designs, implements, and manages the Active Directory (AD) infrastructure of an organization. They are responsible for creating and managing user accounts, setting up security permissions, and ensuring system stability and security. They also troubleshoot and resolve AD-related issues, conduct regular system audits, and implement necessary updates. They often work with other IT professionals to develop and maintain system integration, and they may also be involved in developing and implementing disaster recovery plans. Their role is crucial in ensuring that an organization's networked systems remain operational, secure, and up-to-date.