Network Security Engineer III
Trace3
AnsibleFirewallsPythonSwitchingTCP/IPVMware
Master Network Specialist – INS Technical Lead
First Division Consulting, Inc
full-time
Posted on:
Origin: • 🇺🇸 United States • Virginia
Visit company websiteJob Level
Senior
Tech Stack
AnsibleDNSFirewallsLinuxSwitchingTypeScript
About the role
- Lead and mentor a team of senior network technicians in a Department of Defense (DoD) environment, providing technical direction and oversight for Tier II and Tier III operations.
- Oversee configuration, integration, and management of firewalls, routers, switches, VPNs, DNS, and Linux systems within NIPRNET and SIPRNET boundaries.
- Manage and maintain enterprise virtual server infrastructure, storage area networks, and messaging environments across more than 5,000 physical and virtual systems.
- Ensure network operations meet stringent DoD security and availability standards, supporting distributed operations and enterprise business needs.
- Troubleshoot and resolve complex network issues, including WAN optimization, routing and switching, and firewall management.
- Coordinate with MCCOG leadership to analyze requirements, define technical solutions, and implement best practices for network defense and resilience.
- Conduct security audits, supervise system modifications, and ensure compliance with DoD 8570.01M and other relevant policies.
- Develop and maintain technical documentation, network diagrams, and operational procedures.
- Participate in incident response, escalation management, and after-action reviews to continuously improve network defense posture.
- Provide training and technical guidance to team members, fostering a culture of continuous learning and technical excellence.
Requirements
- Minimum of five (5) years’ experience leading senior technicians in a DoD network environment, specifically supporting Tier II – Tier III DNS, Linux, firewalls, WAN optimization, and routing/switching.
- IAT Level III certification (per DoD 8570.01M requirements).
- Active TS/SCI security clearance.
- ITIL v4 Foundation Certification.
- STIG hardening experience.
- Ansible experience.
- Tenable experience.
- Demonstrated expertise in managing large-scale, mission-critical networks with a focus on security, redundancy, and high availability.
- Strong knowledge of DoD network protocols, security standards, and operational requirements.
- Preferred: Experience with enterprise virtual server environments and storage area networks.
- Preferred: Familiarity with Marine Corps network operations and MCCOG procedures.
- Preferred: Excellent communication, leadership, and documentation skills.
- Preferred: Ability to work collaboratively in high-pressure, mission-critical environments.
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