GovCIO · 3 weeks ago
Network Security Engineer Senior
US-WV-Kearneysville
Full-time
Hybrid
Senior Level, Lead/Staff
8+ years expGovCIO is seeking an experienced Network Security Engineer (Senior) to provide critical support for our U.S. Coast Guard program. This role focuses on designing, implementing, and maintaining secure network infrastructure with an emphasis on Zero Trust Architecture and Network Access Control (NAC).
ConsultingIT InfrastructureIT ManagementManagement Consulting
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Configure, maintain, and optimize Cisco Identity Services Engine (ISE) for robust authentication, authorization and accounting (AAA)
Administer and maintain the full ISE deployment, including Policy Service Nodes (PSNs), Monitoring and Troubleshooting Nodes (MnTs) and the Primary Admin Node (PAN)
Implement and support 802.1X, MAB (MAC Authentication Bypass), posture assessment and advanced profiling for comprehensive endpoint security
Configure and manage Cisco ISE Guest Access, BYOD policies, and endpoint device profiling
Perform routine ISE system updates, patches, and health checks to ensure optimal system stability and performance, including executing the node upgrade process
Monitor and analyze RADIUS, TACACS+, LDAP, and Active Directory authentication logs to ensure security compliance and troubleshoot performance issues
Expertly troubleshoot complex authentication failures, endpoint misclassifications, and network access issues
Ensure all Network Access Control (NAC) enforcement strictly aligns with DoD Comply to Connect (C2C) policies and DISA STIGs
Implement and support device posture validation, MSFT Defender, Tanium, dynamic ACL (dACL) provisioning, dynamic VLAN assignments and Security Group Tagging (SGT)
Collaborate with network and security teams to design and enforce Zero Trust security models and the principle of least privilege access
Assist in implementing and troubleshooting certificate-based authentication (TLS/SSL, OpenSSL operations and PKI infrastructure)
Conduct deep-dive traffic analysis using tools like Wireshark, TCPDump and SolarWinds to diagnose authentication issues and identify network anomalies
Support the seamless integration of Cisco ISE with security and network platforms, including Cisco Firepower, ASR/ISR/CSR/ASA firewalls, VERSA and Palo Alto NGFWs
Assist in troubleshooting NAC-related network performance issues that affect LAN/WAN connectivity
Provide expert support for multi-VRF environments, ensuring proper NAC enforcement across complex and segmented network topologies
Qualification
Required
Bachelor's degree in computer science, information systems or a related field with 8+ years (or commensurate experience)
5+ years of dedicated experience in network security, NAC or related roles
A minimum of 3+ years of direct, hands-on experience in Cisco ISE administration, NAC policy management and network authentication security
Clearance Required: Must be cleared up to an active Secret clearance
Current DoD 8570 IAT Level II certification (e.g., Security+ CE, CCNA Security, SSCP)
Deep expertise in Cisco ISE architecture, profiling, posture assessment and endpoint classification
Proficient with 802.1X, MAB, RADIUS, TACACS+, LDAP and Microsoft Active Directory integration
Hands-on experience with Cisco Switch CLI for configuration and troubleshooting
Strong understanding of certificate-based authentication (PKI, TLS/SSL, OpenSSL)
Proven experience working within DoD cybersecurity compliance frameworks (e.g., DISA STIGs, NIST 800-53, IAVMs)
Familiarity with Cisco Firepower, ASA firewalls, and Palo Alto NGFWs
Preferred
Basic scripting knowledge (Python, Bash, or REST APIs) for automation and troubleshooting is a significant plus
Benefits
Employee Assistance Program (EAP)
Corporate Discounts
Learning & Development platform, to include certification preparation content
Training, Education and Certification Assistance*
Referral Bonus Program
Internal Mobility Program
Pet Insurance
Flexible Work Environment
Company
GovCIO
GovCIO is a business consulting firm that focuses on cyber security, digital, data, management and mission services, and IT services.
1001-5000 employees
Funding
Current Stage
Late StageLeadership Team
Lynn Oakes
Sr. Vice President, Contracts at GovCIO
Andre Green
Vice President Special Operations Support Solutions (SOSS) GOVCIO
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