The Senior Systems Administrator is responsible for ensuring the secure, reliable, and efficient operation of enterprise IT systems, networks, and infrastructure. This role proactively solves complex technical issues, implements and maintains security controls, and supports agency operations through system administration, network management, and customer-focused technical support. Own day-to-day technical decision making, escalated incident response, and enforcement of technical standards across systems and infrastructure. Collaborate closely with business partners to protect data, mitigate security risks, and support ongoing technology improvements. Work with minimal supervision, contribute to IT planning and resource management, and help drive operational efficiency through automation, documentation, and continuous improvement initiatives. Configure, monitor, and troubleshoot servers, workstations, networks, cloud platforms, and enterprise applications. Administer user access and security controls. Respond to incidents and suspicious activity. Support IT projects, upgrades, and migrations.