Sentinel Principal Systems Engineer

Salary: $107000 - 199000 per year Requirements: Bachelors degree in a Science, Technology, Engineering or Mathematics (STEM) field from an accredited institution 2+ years experience for Systems Engineer level; 5+ years for Principal Systems Engineer level (or 3 years with a Masters degree) Active DoD Secret Clearance at the time of application, current and within scope, with an investigation date within the last 6 years Ability to obtain and maintain Special Access Program (SAP) approval Experience with technical review boards (preferred) Familiarity with interface work and leading/supporting trade studies (preferred) Proficiency in Atlassian tools (Jira and Confluence), Cameo, DOORS, Nx or similar tools (preferred) Responsibilities: Collaborate with a team of systems engineers to enhance interface products for the weapon system Develop and refine key interface artifacts including Interface Control Documents (ICDs) and Interface Requirements & Verification Plans Create Interface Logical and Physical Architecture as well as CAD models Generate Interface Mentor Capital Wiring Diagrams Communicate effectively with internal and external stakeholders to foster strong working relationships Engage actively in a Model Based Systems Engineering (MBSE) environment Technologies: Atlassian Confluence JIRA SAP More: At Keystone AI, we offer exceptional opportunities to work on pioneering systems that make a meaningful impact on peoples lives globally now and for future generations. Our legacy of innovation has placed us at the forefront of technological advancements in U.S. history. We pride ourselves on our culture that values intellectual curiosity, diversity, and the ability to bring your whole self to work, alongside a commitment to tackling challenges others perceive as impossible. Located in Huntsville, AL, this role offers a 9/80 work schedule, allowing employees to enjoy an extra long weekend every other week, along with a robust benefits package including medical, dental, vision coverage, 401k, educational assistance, paid time off, and wellness resources. last updated 27 week of 2026