Network Administrator

Amentum•El Paso, TX

About The Position

Amentum, a global leader in critical mission support, engineering, technology, and national security solutions, is seeking a Network Administrator to support the WEXMAC government contract based in El Paso, TX. PURPOSE AND SCOPE The Network Administrator is responsible for the design, implementation, operation, monitoring, and maintenance of enterprise network infrastructure to ensure reliable, secure, and high-performance connectivity. This role supports day-to-day network operations, troubleshooting, and lifecycle management of network devices and services across LAN, WAN, and wireless environments. A current Cisco Certified Network Associate (CCNA) certification is required to ensure foundational expertise in routing, switching, and network troubleshooting.

Requirements

Two (2) to five (5) years of experience in network administration or network operations.
Active Cisco Certified Network Associate (CCNA) certification (required).
Hands-on experience with: Routing and switching (TCP/IP, VLANs, OSPF, basic BGP concepts) LAN/WAN technologies Wireless networking (802.11 standards)
Strong troubleshooting skills and understanding of OSI and TCP/IP models.
Experience working in enterprise or multi-site network environments.

Nice To Haves

Experience with Cisco enterprise networking equipment.
Familiarity with firewall platforms, VPN technologies, and network monitoring tools.
Experience supporting cloud-connected or hybrid network environments.
Additional certifications (e.g., CCNP, Network+, or vendor-specific credentials).

Responsibilities

Install, configure, and maintain network hardware including routers, switches, firewalls, wireless access points, and network appliances.
Monitor network performance, availability, and capacity; identify and resolve connectivity issues.
Perform root-cause analysis for network outages and performance degradation.
Provide Tier II/Tier III support for network-related incidents and service requests.
Manage network configurations, firmware upgrades, and patching activities.
Implement approved network changes in accordance with established change-management procedures.
Maintain accurate network diagrams, inventories, and configuration documentation.
Implement and maintain network security controls such as VLANs, ACLs, firewall rules, and network segmentation.
Support network hardening, access control, and secure connectivity practices.
Monitor for unauthorized access, misconfigurations, and network anomalies.
Support network design and implementation for new sites, expansions, and technology refreshes.
Assist with WAN/LAN connectivity, VPNs, and remote access solutions.
Coordinate with vendors and service providers for circuit provisioning, maintenance, and troubleshooting.
Maintain network documentation including diagrams, IP address management, and configuration standards.
Ensure network operations align with organizational IT policies and procedures.
Support audits, inspections, and operational reviews as required.