An AIX developer specializes in working with IBM's AIX, a proprietary Unix operating system. Their role involves designing, developing, and implementing applications and systems using this OS. They often troubleshoot and resolve AIX-related issues, manage system backups, and ensure data recovery procedures are effective. Additionally, they handle system updates, kernel settings, and maintain security configurations. They also work on capacity planning, performance monitoring and tuning, and may also provide technical support to teams using AIX. Their role is crucial in maintaining the smooth operation of AIX systems within a business setting.