Principal Systems Engineer / Systems Architect – Modular Weapons GRA

KBR is seeking a highly experienced Principal Systems Engineer and Modular Systems Architect to support a U.S. Government organization in advancing the Weapons Government Reference Architecture (GRA) and Weapons Open Systems Architecture (WOSA) for conventional weapon systems. The role involves evolving these architectures into an actionable framework that expands the industrial base, accelerates technology insertion, and reduces integration costs. The position requires extensive expertise in Model-Based Systems Engineering (MBSE) and SysML to define physical parameters, interfaces, and severable data packages for competitive acquisition.