Network Architect, Onsite

Network Architect – P4

Location:

Tucson, AZ. Onsite. U.S. citizenship required due to the requirement of a U.S. government‑issued security clearance. An active, transferable Secret clearance is required prior to the start date with the ability to obtain Top Secret clearance after employment. The role supports classified and enterprise network environments.

• Design and maintain network architectures supporting classified programs and enterprise environments.
• Apply architecture principles and methodologies aligned with TOGAF and DoDAF frameworks to develop secure, scalable, and supportable network solutions.
• Collaborate with senior network architects, engineering, operations, cybersecurity, systems, and program teams to develop solutions that meet business, mission, and technical requirements.
• Support architecture governance activities and help ensure compliance with established standards, security requirements, and best practices.
• Develop and maintain architecture artifacts, including network diagrams, design documents, technical implementation guidance, and supporting documentation.
• Provide technical guidance during the design and implementation of network solutions.
• Provide Tier 3/4 escalation support to operational network teams, resolving complex issues that require advanced technical expertise and architectural analysis.
• Support architecture reviews, design forums, technical working groups, and trade studies in partnership with senior network architects.
• Assist with complex problem resolution and provide technical leadership for challenging network issues and modernization efforts.
• Evaluate emerging technologies and contribute recommendations regarding their applicability within classified network environments.
• Collaborate with operational and engineering teams to ensure consistent implementation of approved architectures and designs.
• Support proposal efforts and new program activities by providing technical input and architectural guidance.
• Communicate technical concepts clearly to both technical and non‑technical stakeholders.
• Contribute to modernization, standardization, and simplification initiatives across classified network environments.

• Classified network architecture principles, design methodologies, and best practices.
• Secure networking solutions, architecture frameworks (TOGAF and DoDAF), and governance processes.
• Cross‑functional collaboration with engineering, operations, cybersecurity, systems engineering, and infrastructure teams.
• Network modernization initiatives, emerging technologies, and enterprise design standards.

• University degree or equivalent experience, with at least 10 years of relevant experience; or advanced degree with at least 7 years of experience.
• Experience designing, implementing, and supporting network architectures in enterprise or classified environments.
• Experience working with routing, switching, firewalls, WAN, segmentation, encryption, and secure communications.
• Experience developing network designs, technical documentation, and architecture artifacts to support solution implementation.
• Experience applying architecture principles and methodologies, with knowledge of frameworks such as TOGAF, DoDAF, or similar enterprise architecture frameworks.
• Active and transferable Secret DOD security clearance required prior to the start date; ability to acquire Top Secret clearance thereafter.
• U.S. citizenship required.
• Other requirements: obtain DoDD 8140/8570 Certification requirements (e.g., CompTIA Security+ CE or equivalent) within six months of the start date.

• TOGAF certification, formal TOGAF training, or experience working within an architecture framework.
• Experience supporting classified systems, secure networks, and mission‑critical environments.
• Familiarity with RMF/CSRM, NIST, STIGs, ICD 503, and other DoD security frameworks and compliance requirements.
• Strong written, visual, and verbal communication skills, including experience developing technical documentation, network diagrams, and architecture artifacts.
• Cisco CCNA or CCNP certification.
• Experience with Cisco networking platforms and technologies.
• Experience participating in architecture reviews, technology evaluations, or network modernization initiatives.
• Experience collaborating across engineering, operations, cybersecurity, and program teams to develop and implement network solutions.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified individuals with a disability and protected veterans in compliance with Section
503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.