Network Security Engineer

Location: Amarillo, TX - Pantex Plant

Responsibilities

• Administer and maintain enterprise networks, including configuring and lifecycle management of network devices such as routers, switches, firewalls, virtual private network (VPN)s, and wireless infrastructure.
• Perform network maintenance and system upgrades, including service packs, patches, hotfixes, and security configurations.
• Monitor network performance and integrity, ensuring the stability, reliability, and security of the network.
• Troubleshoot and resolve complex network issues in a timely manner.
• Implement and manage next-generation firewall platforms (e.g., Palo Alto), including high availability configuration, secure sockets layer (SSL) decryption, policy optimization, and intrusion detection/prevention systems (IDS/IPS).
• Develop and deploy scalable and resilient network architectures to support high availability, fault tolerance, and future growth.
• Engineer and support complex routing strategies using protocols such as Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), and Border Gateway Protocol (BGP), ensuring optimal route redistribution, convergence, and path selection.
• Design, deploy, and manage hybrid network topologies, including integration with cloud environments (e.g., Microsoft Azure Virtual Networks, ExpressRoute, peering).
• Support the implementation and management of Network Access Control (NAC) solutions (e.g., Cisco Identity Services Engine (ISE) for endpoint compliance and identity-based access control.
• Administer, monitor, and support Cisco Unified Communications Manager (CUCM), Cisco Unity Connection, and other Cisco Voice over Internet Protocol (VoIP) systems, including voice gateways, internet protocol (IP) phones, and their associated infrastructure, to ensure reliable communication services.
• Deploy, configure, and maintain Cisco wireless network infrastructure, including wireless Local Area Network (LAN) controllers (WLCs) and access points, to ensure seamless and secure wireless connectivity.
• Maintain accurate technical documentation, including topology diagrams, configuration baselines, IP address management, and change control records.
• Collaborate with other IT disciplines, including cloud, systems, and security teams, to deliver integrated solutions.
• Provide technical leadership and mentorship to junior technical staff as needed.

Benefits

• Meaningful work and unique opportunities to support missions vital to national and global security.
• Top-notch, dedicated colleagues