Senior DoD Network Security Engineer - Cisco & RMF Expert

American Systems

California

On-site

USD 150,000 - 170,000

Full time

2 days ago

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Job summary

AMERICAN SYSTEMS is seeking a Senior Network Security Engineer to operate and secure classified DoD network infrastructure at China Lake, CA. You will blend hands-on Cisco networking with cybersecurity to keep mission systems reliable and secure.

The role emphasizes configuring Cisco devices, monitoring health, and supporting incident response, vulnerability remediation, and RMF alignment. Requires TS/SCI eligibility, CCNA, DoD 8140 Level III, and Solaris/Linux experience.

Qualifications

Active Top Secret clearance w/SCI eligibility and ability to obtain SAP access.
U.S. citizenship, required to obtain and maintain a U.S. security clearance.
Bachelor's degree in Information Technology, Cybersecurity, or a related field; additional experience may substitute for a degree.
5-7 years of experience supporting enterprise networks in DoD, federal, or similarly regulated environments.
Current CCNA certification.
Current DoD 8140 IAT Level III certification (e.g., CASP+ CE, CCNP Security, CISA, CISSP or equivalent).
Hands-on experience configuring and maintaining Cisco network infrastructure.
Experience implementing RMF in DoD/Navy cybersecurity requirements.
Familiarity with vulnerability management, patch compliance, and information assurance controls.
Experience supporting Solaris, Linux, or UNIX-based systems.
Experience installing or configuring IDS, firewalls, or perimeter defenses.
Experience continuity of operations planning, failover testing, or system-availability documentation.
Experience integrating network infrastructure with broader enterprise systems.

Responsibilities

Configure, administer, and troubleshoot Cisco routers and switches for classified networks.
Install, maintain, and optimize enterprise LAN/WAN infrastructure.
Monitor network health, logs, backups, and scheduled jobs for reliable operations.
Support remote users with equipment setup and L2/L3 connectivity troubleshooting.
Diagnose Cisco, VPN, and VMware connectivity issues.
Perform software installations, upgrades, license management, and security patching.
Manage user accounts and access controls per cybersecurity requirements.
Support incident response, vulnerability remediation, and risk identification.
Maintain network procedures and operational standards with documentation.
Collaborate with internal teams and vendors to resolve issues.
Work with minimal supervision while strengthening security posture.