Network Security Engineer III with Security Clearance
Invictus
📍 Alexandria, Virginia, US0💼 Full-time🕐 5/29/2026
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Role overview
Invictus is hiring for the Network Security Engineer III with Security Clearance role in Alexandria, Virginia, US. It is full-time, Mid-level level, in the Tech sector. It was posted 5/29/2026.
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- Role
- Network Security Engineer III with Security Clearance
- Company
- Invictus
- Location
- Alexandria, Virginia, US
- Work mode
- On-site
- Employment
- Full-time
- Seniority
- Mid-level
- Sector
- Tech
- Posted
- 5/29/2026
Description
Title: Network Security Engineer III 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 six (6) 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
The market for this role in Alexandria
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