An Apache Subversion developer manages and tracks changes to software development projects, using the Apache Subversion (SVN) version control system. They handle modifications in source code, managing different versions and ensuring smooth collaboration among developers. Their tasks include committing changes, resolving conflicts, merging branches, and reverting changes if necessary. They also control access permissions, ensuring that only authorized personnel can make changes. In addition, they are responsible for maintaining the health and integrity of the SVN repository, undertaking regular backups, and recovering lost data. Their role is crucial in facilitating efficient, organized, and error-free software development.