Network Security Engineer IV

Network Security Engineer IV Invictus International United States, Virginia, Alexandria 66 Canal Center Plaza (Show on map) Apr 30, 2026

Title:

Network Security Engineer IV Location:

Alexandria, VA Clearance:

TS/SCI with the ability to obtain and maintain a CI polygraph

Job Details:

Responsible for the deployment, configuration, and operational support of enterprise firewall infrastructure Execute enterprise networking fundamentals, including routing, switching, and end-to-end traffic flow Demonstrate LAN and WAN troubleshooting experience Hands on experience with eBGP, VLANs, and Palo Alto APP-ID Design, implement, and maintain NGFW security policies, including both physical and virtual firewalls Perform IDS/IPS configuration, tuning, and alert triage Read, produce, and maintain accurate network diagrams (Visio or equivalent) Conduct network security monitoring including traffic analysis and anomaly detection Troubleshoot routing, VLAN, and policy related issues impacting data flow across the enterprise Perform packet captures and traffic analysis to isolate and resolve complex connectivity issues Monitor and refine Splunk dashboards and alerts in support of firewall operations and incident investigation desired Collaborate with the network, SOC, and engineering teams during incidents and routine operations Document configurations, runbooks, and post incident findings

Requirements:

Bachelor's degree from an accredited institute in a technical discipline; an additional four (4) years of experience may be substituted in lieu of a degree Minimum eight (8) years of relevant experience in addition to education level Experience working in a DoD or Intelligence Community Environment desired Must possess current DoD 8570 IAT II and CCNP (or equivalent) certifications Current active TS/SCI clearance, with the ability to obtain and maintain a CI polygraph Equal Opportunity Employer/Veteran/Disabled