This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior System Architect based in United States. This role offers the opportunity to design and evolve mission-critical software systems supporting complex defense and national security initiatives.You will lead architecture, integration, and modernization efforts while translating operational needs into innovative technical solutions.Working across multidisciplinary engineering teams, you will guide research, prototyping, and product development activities.The position combines deep technical expertise, strategic thinking, and hands-on leadership to deliver secure and resilient mission capabilities.You will contribute to emerging technologies, cybersecurity strategies, and advanced engineering practices in a collaborative environment.This is an impactful opportunity for an experienced systems leader passionate about solving challenging problems through technology and innovation.