
Network Security Engineer III
Invictus International Consulting, LLCRole Overview
Invictus International Consulting, LLC is hiring a senior-level Network Security Engineer III. This is a full-time role in Alexandria. Part of Invictus International Consulting, LLC's Security hiring. Full responsibilities, required qualifications, and the apply link are listed in the description below.
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Job 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
Frequently Asked Questions
How do I apply for the Network Security Engineer III position at Invictus International Consulting, LLC?
Use the Apply button above to submit your application directly to Invictus International Consulting, LLC. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.
Where is the Network Security Engineer III position at Invictus International Consulting, LLC located?
This position is based in Alexandria. Invictus International Consulting, LLC has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.
What does a Network Security Engineer III at Invictus International Consulting, LLC earn?
Invictus International Consulting, LLC has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.
When was the Network Security Engineer III role at Invictus International Consulting, LLC posted?
This role was posted on April 28, 2026 (52 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.
How much experience does the Network Security Engineer III role at Invictus International Consulting, LLC require?
This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Invictus International Consulting, LLC lists their specific requirements in the description below, so review the must-have qualifications closely before applying.
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