Senior Defense Systems Engineer & MBSE Leader

KBR is seeking a Lead Systems Engineer in Huntsville, AL to provide strategic technical leadership for the Fires portfolio. You will guide systems integration of weapons, sensors, launchers, C2, and networks into interoperable capabilities for joint and coalition operations. The role requires deep expertise in systems engineering, mission engineering, MBSE, risk management, and verification/validation, with strong communication to senior government and military leaders. Travel 20% is expected.