SAIC is seeking a Principal Systems Engineer to support the Air Force’s next-generation Intercontinental Ballistic Missile (ICBM) weapon system acquisition - the Sentinel Program. Our customer is the Sentinel Program Office located at Hill Air Force Base, Utah. This is a rare opportunity to work on one of the Department of Defense's most strategic and transformative acquisition programs while serving as a trusted technical advisor to senior decision-makers. This position demands a highly experienced systems engineering leader with a proven track record of guiding large-scale engineering initiatives, managing complex systems, and driving high-stakes program success. Responsibilities Include: • Serve as the primary technical advisor to the U.S. Air Force on engineering and acquisition decisions for the Sentinel program. • Develop and oversee the strategy for major technical milestone reviews (e.g., SRR, PDR, CDR), including the creation and delivery of key review materials. • Perform extensive reviews of Prime contractor designs, mechanical drawings, and deliverables to ensure program compliance with technical requirements, Government policy, and safety standards. • Provide expert-level oversight of requirements management and traceability, ensuring alignment with evolving technical baselines through tools like DOORS. • Direct and oversee system verification and validation efforts for highly regulated systems with critical mission requirements. • Serve as technical lead for complex issue resolution, risk management efforts, and mitigation strategies across multi-disciplinary teams. • Act as a mentor and guide to systems engineers at all levels, contributing to team and organizational growth. • Bachelor of Science in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, Physics, or Mathematics with 9+ years of professional engineering experience • Active U.S. Government Secret clearance. • Recognized expertise in Model-Based Systems Engineering (MBSE) processes and tools such as Cameo, Rhapsody, or other similar platforms. • Extensive experience in requirements management and traceability efforts using tools like DOORS. • Proven leadership in planning, preparing, and executing technical milestone reviews such as SRR, PDR, and CDR. • Advanced understanding of verification and validation processes for large-scale systems in a highly regulated environment (e.g., aerospace, defense). • Demonstrated ability to serve as a trusted advisor to Government customers, providing solutions to critical engineering and technical challenges. Preferred Qualifications: • Professional Engineer (PE) license and/or INCOSE Certified Systems Engineering Professional (CSEP or ESEP). • Mastery of systems engineering, Agile development tools, or advanced modeling tools such as MATLAB, DOORS, JIRA, and Confluence.