The Systems Administrator is responsible for maintaining simulation-specific hardware and software, ensuring its availability and performance. This involves preventative, corrective, and standby maintenance. Key duties include maintaining the Navy Simulation Environment's stability, security, efficiency, and scalability. Responsibilities also involve integrating simulation systems, providing technical advice for RHEL server operations in Linux, maintaining systems according to ISM standards, contributing to infrastructure monitoring tools, liaising with vendors, and maintaining technical documentation. The role requires collaboration with stakeholders and contribution to a positive team environment to achieve business objectives and service delivery standards.