Network Engineer with Security Clearance

Network Engineer
Company: Horizon Global Partners (HgP)
Division: Defense & Aerospace Services (DAS)
Location: Washington, DC (Hybrid)
Employment Type: Full-Time
Clearance: Active Public Trust preferred; ability to obtain and maintain a Public Trust required.
Position Summary
Horizon Global Partners (HgP) is seeking a Network Engineer to support a Federal Government customer by implementing, maintaining, securing, and optimizing enterprise Cisco network infrastructure. The successful candidate will support mission-critical network operations across core, distribution, access, and edge environments while ensuring compliance with Federal cybersecurity standards and Cisco best practices.
Key Responsibilities
• Support implementation, configuration, and maintenance of Cisco enterprise network infrastructure.
• Monitor and optimize LAN/WAN, routing, switching, VLANs, DNS, DHCP, and VPN services.
• Implement Zero Trust network segmentation and least-privilege access controls.
• Configure and maintain Cisco routers, switches, firewalls, and 802.1X Network Access Control.
• Support SIEM integration, network monitoring, and incident response activities.
• Perform firmware upgrades, patch management, and vulnerability remediation.
• Maintain network diagrams, SOPs, and technical documentation.
• Support change management, audits, and collaborate with cloud and cybersecurity teams.
Required Qualifications
• Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent experience.
• Minimum 5 years of enterprise network engineering experience.
• Minimum 3 years supporting Cisco enterprise environments.
• Experience with Cisco routing, switching, firewalls, VLANs, DNS, DHCP, VPNs, and TCP/IP.
• Knowledge of NIST SP 800-53, NIST SP 800-207 (Zero Trust), and network security best practices.
• Strong troubleshooting, documentation, and communication skills.
Required Technical Skills
Cisco Routing & Switching, Cisco Catalyst, Cisco Nexus, LAN/WAN, TCP/IP, VLANs, OSPF, BGP, DNS, DHCP, VPN, Cisco Firewalls, 802.1X, Zero Trust Architecture, Network Segmentation, SIEM Integration, Network Monitoring, Vulnerability Management, Incident Response, Change Management, Microsoft Active Directory integration.
Required Certification
Active Cisco certification(s) required. Candidates must possess one or more current Cisco certifications relevant to enterprise networking. Expired certifications will not be considered.
Preferred Certifications
• CompTIA Security+
• CISSP
• ITIL Foundation v4
• Certified Ethical Hacker (CEH)
Why Join Horizon Global Partners?
Support mission-critical Federal Government programs while working with modern Cisco networking technologies in a secure enterprise environment.