Senior DoD Firewall Engineer – On‑Site (Pentagon)

NTG; Alexandria (VA); On-site; USD 140,000 - 180,000; Full time

Job summary

NTG is seeking a Senior Firewall Engineer to design, implement, manage, and maintain complex firewall solutions for the GSM-O effort at the Pentagon, with 100% on-site support.

The role requires advanced experience with Cisco ASA/Firepower, Juniper SRX, and Palo Alto in a DoD environment, plus leadership of firewall teams and adherence to Change Management. Active TS/SCI preferred and DoD 8570 IAT II or higher required before start.

Qualifications

• Bachelor’s degree and 12+ years of directly relevant experience.
• Active DoD Top Secret clearance (TS/SCI preferred) and DoD 8570 IAT II or higher.
• Certifications in Juniper, Cisco, or Palo Alto required prior to start.
• Advanced experience designing and managing firewall solutions in a DoD environment.
• Experience with Cisco ASA/Firepower, Juniper SRX, and Palo Alto.

Responsibilities

• Design, implement, and manage firewall solutions using Cisco ASA/Firepower, Juniper SRX, and Palo Alto technologies.
• Monitor firewall performance and security logs to identify, evaluate, and mitigate potential threats.
• Develop, maintain, and enforce network security policies and procedures.
• Perform system audits to ensure compliance with applicable standards, requirements, and regulations.
• Collaborate with IT, security, and network teams to integrate firewall solutions across the environment.
• Troubleshoot and resolve network and firewall-related issues promptly and document actions within ticketing systems.
• Maintain and update firewall configurations, including security policies and firewall ACLs, as approved through Change Management.
• Serve as the focal point for all firewall tasks, operations, projects, and assessments.
• Ensure all assigned firewall tasks are delivered according to established timelines.
• Provide written reports and oral briefings to the Government Task Lead and PMO Team.
• Conduct annual performance assessments and periodic check-ins for assigned personnel.
• Validate and approve time charging for Leidos and vendor personnel, as applicable.
• Provide coaching, mentoring, and technical guidance to personnel supporting the Firewall Task Area.
• Develop and execute continual service improvement strategies to enhance operational processes and support strategic project, program, and business goals.

Skills

Cisco ASA/Firepower

Juniper SRX

Palo Alto

DoD environment

Top Secret clearance

IAT II certification

Firewall team leadership

Education

Bachelor’s degree

Job description

NTG is seeking a Senior Firewall Engineer to design, implement, manage, and maintain complex firewall solutions for the GSM-O effort at the Pentagon, with 100% on-site support.

The role requires advanced experience with Cisco ASA/Firepower, Juniper SRX, and Palo Alto in a DoD environment, plus leadership of firewall teams and adherence to Change Management. Active TS/SCI preferred and DoD 8570 IAT II or higher required before start.