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Lead Network Engineer – Cisco ISE/Firepower
Job in
Dallas, Dallas County, Texas, 75215, USA
Listed on 2026-07-20
Listing for:
Jobtailor
Full Time
position Listed on 2026-07-20
Job specializations:
-
IT/Tech
Cybersecurity, Network Security
Job Description & How to Apply Below
Responsibilities
- 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
- TS/SCI clearance
- DoD 8140/8570 IAT II
- Security+ CE
- CySA+
- SSCP
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