Lead Pentagon Firewall Architect On-Site

NTG; Arlington (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

Leidos is seeking a Senior Firewall Engineer to design, implement, and manage complex firewall solutions for the GSM-O effort at the Pentagon, with 100% on-site support. The role requires leadership of firewall teams and collaboration across IT, security, and network groups to ensure secure, compliant operations.

Responsibilities include configuring Cisco ASA/Firepower, Juniper SRX, and Palo Alto platforms, monitoring logs, conducting audits, and delivering timely results.

Qualifications

• Bachelor’s degree and 12+ years of directly relevant experience.
• Minimum of 3 years of firewall experience within a Department of Defense environment.
• Demonstrated knowledge in planning, directing, and managing a firewall team in an organization of similar size and complexity.
• Demonstrated knowledge of perimeter and internal firewall implementation in both physical and virtual environments.
• Advanced experience managing standard baseline configurations across numerous firewalls.
• Advanced experience evaluating firewall rules to ensure maximum security while minimizing redundancy.
• Experience researching, evaluating, and fielding new and innovative firewall technologies.

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

Firewall design

Policy enforcement

Threat monitoring

DoD environment

Team leadership

Change management

Documentation

Coaching/mentoring

Education

Bachelor’s degree

Tools

Cisco ASA/Firepower

Juniper SRX

Palo Alto

Job description

Leidos is seeking a Senior Firewall Engineer to design, implement, and manage complex firewall solutions for the GSM-O effort at the Pentagon, with 100% on-site support. The role requires leadership of firewall teams and collaboration across IT, security, and network groups to ensure secure, compliant operations.

Responsibilities include configuring Cisco ASA/Firepower, Juniper SRX, and Palo Alto platforms, monitoring logs, conducting audits, and delivering timely results.