A sysadmin, or system administrator, is a professional responsible for managing and maintaining computer systems and networks. They ensure that servers, databases, and applications run smoothly and securely. Sysadmins often handle tasks such as installing software, monitoring system performance, and troubleshooting issues to keep everything operational. In addition to technical skills, sysadmins must also have strong problem-solving abilities and communication skills. They often work with various technologies, including operating systems, networking equipment, and cloud services. Their role is crucial in organizations to ensure that IT infrastructure supports business operations effectively.