Senior Network Administrator

Senior Network Administrator Job Location: US-MS-John C. Stennis Space Center Responsibilities Peraton is seeking an experienced Senior Network Administrator to support and maintain the operational health of our network infrastructure. The ideal candidate will have strong expertise in routing, switching, and security compliance, with hands‑on experience troubleshooting firewalls and managing network services in a government or highly regulated environment. This role focuses on operational support rather than network architecture or engineering. Perform day‑to‑day operational network support, including troubleshooting firewalls and other network components. Implement network changes after hours as required, following established change management processes. Monitor network performance and manage network services, including SNMP, NTP, SSH, PKI, and syslog. Maintain security compliance, perform assessments, and remediate issues as necessary. Participate in on‑call rotation and respond to network incidents in a timely manner. Document all work and maintain accurate records in ticketing and change management systems. Collaborate with internal teams to ensure network reliability, availability, and performance. Qualifications Basic Qualifications Bachelor's degree and 5 years of experience or a Master's degree and 3 years of experience or a high school diploma and 9 years of experience. Must be a U.S. Citizen with the ability to obtain a DHS (EOD) Public Trust. Advanced experience in routing and switching. Strong knowledge of security compliance assessment and remediation. Experience with firewall troubleshooting and management. Knowledge of load balancing and AAA (Authentication, Authorization, Accounting). Experience with network management and monitoring services (SNMP, NTP, SSH, PKI, syslog). Familiarity with change management processes and ticketing systems. Experience with Windows and Linux operating systems. Understanding of virtualization technologies. Ability to work mostly business hours with some evening work and participate in on‑call rotation. Strong attention to detail and excellent verbal and written communication skills. Preferred Qualifications Experience with NX‑OS (Cisco Nexus Operating System). Experience with Cisco ACI (Application Centric Infrastructure). Experience with F5 BIG‑IP LTM (Local Traffic Manager). Experience with Palo Alto Firewalls, Cisco ASA, and Cisco ISE. Knowledge of Cisco FXOS (FirePower Extensible Operating System) and UCS (Unified Computing System). ITIL certification or knowledge of ITIL practices. Prior experience in a government IT environment. Patience and strong collaboration skills. Target Salary Range $80,000 - $128,000. 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 Statement EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law. #J-18808-Ljbffr