The Role
Leads secure network engineering and operational support in a highly classified environment. Configures and troubleshoots Cisco ISE, Cisco Firepower, FMC, routers, switches, firewalls, VPNs, VLANs, ACLs, and segmented architectures. Supports AAA, 802.1X, RMF, STIG, incident response, outage resolution, root cause analysis, remediation, technical documentation, and infrastructure improvements while collaborating with cybersecurity, systems administration, and mission teams.
Summary Generated by Built In
Overview
AMERICAN SYSTEMS, a 100% employee-owned company, is seeking a Lead Network Engineer to support secure network operations in a highly classified environment in Dallas, TX.
We’re looking for someone with strong hands-on experience in Cisco ISE, Cisco Firepower, and enterprise network security to make a direct impact on a critical national security mission.
ResponsibilitiesAs a Lead Network Engineer at AMERICAN SYSTEMS, you will:
- Lead secure network engineering and operational support in a highly classified environment
- Configure, administer, and troubleshoot Cisco ISE for authentication, authorization, accounting, network access control, and policy enforcement
- Administer and optimize Cisco Firepower and Firepower Management Center (FMC), including policy administration, rule management, and troubleshooting
- Design, implement, and maintain secure network infrastructure, including routers, switches, firewalls, VLANs, ACLs, VPNs, and segmented architectures
- Troubleshoot complex Layer 2/Layer 3, firewall, authentication, and access control issues
- Support AAA, 802.1X, VPN, RMF, STIG, and secure configuration requirements
- Develop and maintain network diagrams, implementation plans, SOPs, and technical documentation
- Partner with cybersecurity, systems administration, and mission teams to deliver secure, resilient infrastructure solutions
- Support incident response, outage resolution, root cause analysis, and network remediation efforts
- Recommend improvements to strengthen network performance, security, and reliability
- U.S. citizenship required
- Active TS/SCI clearance required with SAP eligibility
- Bachelor’s degree in a related technical field, or additional relevant experience in lieu of a degree
- 8+ years of network engineering experience in enterprise, defense, intelligence, or other highly regulated environments
- Strong experience with Cisco ISE and Cisco Firepower/FMC
- Experience supporting AAA, 802.1X, VPN, RMF, and STIG requirements
- Active DoD 8140/8570 IAT II certification required, e.g., Security+ CE, CySA+, SSCP, or equivalent
- Strong knowledge of Layer 2/Layer 3 networking, routing, switching, VLANs, ACLs, subnetting, and segmentation
- Experience troubleshooting Cisco routers, switches, firewalls, and enterprise networks
- Ability to work independently and solve complex technical problems
- Strong written and verbal communication skills
Additional Experience We ValueThe following experience may be helpful in this role, but is not required for consideration:
- Experience supporting highly compartmented classified environments
- Cisco certifications such as CCNA, CCNP Enterprise, CCNP Security, or CCIE
- Experience with network modernization, infrastructure upgrades, or technology refresh efforts
- Experience with incident response, change management, and root cause analysis in classified environments
- Experience supporting virtualized environments such as VMware
AMS1
Pay Transparency StatementAMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $155,000.00/Yr. - USD $180,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. EEO StatementEEO Race/Sex/Disability Status/Veteran StatusSkills Required
- U.S. citizenship
- Active TS/SCI clearance with SAP eligibility
- Bachelor's degree in a related technical field, or additional relevant experience in lieu of a degree
- 8+ years of network engineering experience in enterprise, defense, intelligence, or highly regulated environments
- Strong experience with Cisco ISE and Cisco Firepower/FMC
- Experience supporting AAA, 802.1X, VPN, RMF, and STIG requirements
- Active DoD 8140/8570 IAT II certification, such as Security+ CE, CySA+, SSCP, or equivalent
- Strong knowledge of Layer 2/Layer 3 networking, routing, switching, VLANs, ACLs, subnetting, and segmentation
- Experience troubleshooting Cisco routers, switches, firewalls, and enterprise networks
- Ability to work independently and solve complex technical problems
- Strong written and verbal communication skills
- Experience supporting highly compartmented classified environments
- Cisco certifications such as CCNA, CCNP Enterprise, CCNP Security, or CCIE
- Experience with network modernization, infrastructure upgrades, or technology refresh efforts
- Experience with incident response, change management, and root cause analysis in classified environments
- Experience supporting virtualized environments such as VMware
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The Company
What We Do
AMERICAN SYSTEMS is an employee-owned government services contractor that delivers professional, technical, information technology, engineering, analysis, testing, evaluation, and training solutions for complex national-priority programs. Based in McLean, Virginia, the company supports federal customers—particularly defense and other Department of Defense missions—with mission-essential and information engineering, digital engineering, systems integration, cybersecurity, cloud, data, and lifecycle IT services across critical public-sector environments.
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