Cyber Systems Administration, Lead Associate

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 CBOSS 2.0 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.

Responsibilities

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; escalate 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

Education Requirements

• Minimum of 5 years with BS/BA; Minimum of 3 years with MS/MA; Minimum of 9 years with High School Diploma.

Required Qualifications

• Must be a US Citizen
• Must be able to obtain andmaintaina 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

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure.