Systems Engineer (Senior, Lead, Principal) Company: The Boeing Company Patriot Advanced Capability - 3 (PAC-3) is seeking an experienced and knowledgeable Senior Systems Engineer to drive engineering excellence on the Seeker Integrated Product Team (IPT) across its production, capacity expansion, and development programs in Huntsville, Alabama. The PAC-3 program is an air-defense, missile system designed to counter tactical ballistic missiles, cruise missiles, and advanced aircraft where Boein