System administrators, often referred to as sysadmins, are IT professionals responsible for managing and maintaining computer systems and networks. Their primary duties include installing software, configuring hardware, and ensuring that systems run smoothly and securely. They also monitor system performance and troubleshoot issues to minimize downtime. In addition to technical skills, system administrators must have strong problem-solving abilities and communication skills. They often work with various operating systems, such as Windows and Linux, and may manage servers, databases, and user accounts. Their role is crucial in supporting the overall functionality of an organization's IT infrastructure.