Senior System Architect, DoD Cross-Domain & Cloud Security

SITEC Consulting, LLC.; Springfield (VA); On-site; USD 150,000 - 190,000; Full time

Job summary

SITEC Consulting, LLC. seeks an experienced System Architect - Enterprise Cross Domain Systems (ECDS) to lead architecture, modernization, and integration of complex enterprise DoD environments.

You will drive design across cross-domain, cybersecurity, cloud, and network domains with hands-on depth to guide teams. The role requires senior-level expertise in enterprise architectures, RMF/ATO coordination, and the ability to communicate complex concepts to stakeholders.

Qualifications

• Active TS/SCI clearance with ability to obtain a polygraph.
• 6+ years of relevant experience in system/enterprise architecture, cybersecurity engineering, or related disciplines.
• Experience designing, integrating, or modernizing complex enterprise systems, preferably in DoD/intelligence environments.
• Strong understanding of enterprise networking, cybersecurity architecture, compute/storage/transport, and system integration.

Responsibilities

• Develop and maintain system, enterprise, and solution architectures for cross-domain systems and cybersecurity capabilities.
• Translate mission and technical requirements into architecture designs, interfaces, and implementation strategies.
• Define current-state, transition-state, and target-state architectures for modernization.
• Design solutions across on-prem, cloud, Windows/Linux, networking, and cybersecurity technologies.

Skills

TS/SCI clearance

6+ years in system/enterprise/cybersec

DoD/classified environments

Windows/Linux server environments

AWS/cloud architectures

Cross-domain architectures

Tools

NDR/EDR/NGFWs/IDS/IPS

F5 platforms

Job description

SITEC Consulting, LLC. seeks an experienced System Architect - Enterprise Cross Domain Systems (ECDS) to lead architecture, modernization, and integration of complex enterprise DoD environments.

You will drive design across cross-domain, cybersecurity, cloud, and network domains with hands-on depth to guide teams. The role requires senior-level expertise in enterprise architectures, RMF/ATO coordination, and the ability to communicate complex concepts to stakeholders.