External Job Posting Title Cyber Systems Administration, Senior Advisor

Responsibilities Peraton delivers mission‑critical cybersecurity solutions in support of the Department of Energy (DOE), protecting the networks, systems, and infrastructure that underpin our nation’s energy security and nuclear enterprise. As a Cyber Systems Administrator on the CBOSS2.0 program, you will serve as a key defender of DOE’s network perimeter, responsible for the administration, maintenance, and continuous improvement of enterprise firewall infrastructure. In this role, you will work directly alongside DOE security personnel to enforce boundary protection policies, ensure compliance with federal cybersecurity frameworks, and safeguard mission‑critical systems from evolving cyber threats, making a direct and measurable impact on the security posture of one of the most critical agencies in the U.S. government. Firewall Administration & Management Implement, configure, and maintain enterprise next‑generation firewalls (NGFWs) in support of DOE network security requirements, ensuring continuous availability and integrity of perimeter defense systems Develop, review, and enforce firewall rule sets and Access Control Lists (ACLs) in accordance with the principle of least privilege, conducting periodic audits to identify and remediate unauthorized or anomalous access Design and maintain network segmentation, DMZ configurations, and traffic flow policies to enforce boundary protection controls Manage and tune Intrusion Detection/Prevention Systems (IDS/IPS) integrated with firewall infrastructure to detect, alert, and respond to network‑based threats at the enterprise perimeter Monitoring, Incident Response & Troubleshooting Monitor firewall logs, SIEM alerts, and network traffic flows to identify indicators of compromise, policy violations, and anomalous activity; elevate and respond to incidents per established DOE incident response procedures Diagnose and resolve firewall‑related connectivity, performance, and security issues across enterprise LAN/WAN environments, minimizing operational impact to mission‑critical DOE systems Qualifications Education Requirements Minimum of 12 years with BS/BA; Minimum of 16 years with High School Diploma. Required Qualifications Must be a US Citizen Must be able to obtain and maintain a Department of Energy (DOE) security clearance Demonstrated hands‑on experience administering and managing enterprise firewalls (e.g., Palo Alto, Cisco Secure Firewall, Fortinet FortiGate) Working knowledge of TCP/IP networking, VPN management, network segmentation, and perimeter security architecture Experience with SIEM platforms, IDS/IPS systems, and network traffic analysis tools Strong documentation skills with the ability to produce clear technical procedures, configuration records, and compliance artifacts Preferred Qualifications CompTIA Security+ or higher Vendor‑specific firewall certifications (Palo Alto PCNSE, Cisco CCNP Security, Fortinet NSE 4+) Experience supporting cybersecurity programs at DOE facilities Target Salary Range $135,000 - $216,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. EEO EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law. #J-18808-Ljbffr Peraton