Network Security Architect - Principal

Are you ready to apply your leadership to shape the Cyber, Security, & Intel landscape? Amentum is seeking a Network Security Architect Lead, Principal to join our team of mission-driven professionals at Fort Meade, MD. In this role, you will lead challenging, high-visibility projects that directly impact the Nation’s defense and intelligence missions.

Are you ready to apply your leadership to shape the Cyber, Security, & Intel landscape? Amentum is seeking a Network Security Architect Lead, Principal to join our team of mission-driven professionals at Fort Meade, MD. In this role, you will lead challenging, high-visibility projects that directly impact the Nation’s defense and intelligence missions. Supporting DISA, Amentum’s Intel and Cyber Division is expanding a proven team of highly skilled engineers and architects to design, deploy, and sustain an innovative IT enterprise solution.

As the Principal Network Security Architect, you will serve as the technical visionary and authority for this team, defining secure network boundaries, driving the implementation of zero-trust architectures, and ensuring seamless security integration across complex enterprise environments.

Our team delivers secure, mission-critical capabilities where system integrity and rapid deployment are paramount. We are seeking a Network Security Architect Lead, Principal who combines meticulous security engineering discipline with strategic technical foresight. In this role, you will lead efforts to establish and maintain highly secure, resilient network architectures in a rapidly evolving operational threat environment. Success requires the ability to navigate complex, cross-functional technical dependencies independently while fostering collaborative engineering solutions across integrated teams.

To excel, you must possess a proactive leadership mindset and the agility to rapidly master and govern the secure integration of next-generation systems and services.

8 Hours per day, Monday thru Friday

• The duties and responsibilities of the Network Security Architect Lead, Principal include but are not limited to the following:
• Serve as the principal technical authority and visionary for the secure design, engineering, and evolution of the enterprise IT network infrastructure.
• Architect and engineer high-performance, resilient network transport solutions leveraging enterprise Cisco routing and switching platforms across multi-site environments.
• Design, deploy, and govern robust perimeter and boundary defense systems utilizing Palo Alto Next-Generation Firewalls (NGFW), including advanced threat prevention, SSL decryption, and security policy management.
• Lead the security engineering efforts necessary to navigate the Risk Management Framework (RMF) Assessment & Authorization (A&A) process, ensuring all designs comply with DISA Security Technical Implementation Guides (STIGs) and secure an active Authority to Operate (ATO).
• Define the architectural standards, blueprints, and TTPs for secure network integration, data flow segregation, and cross-domain solutions.
• Set the technical and daily priorities for the network security engineering team, providing advanced mentorship, design standards, and escalation support for complex network anomalies.
• Translate complex, high-level operational requirements and DISA security mandates into detailed technical specifications, low-level network designs (LLD), and security architecture diagrams.
• Organize and lead technical architecture reviews, change control assessments, and security posture briefings with senior program leadership and DISA technical authorities.
• Collaborate with Systems Engineers, Cloud Architects,…