Johns Hopkins Applied Physics Laboratory (APL) is seeking a Senior Weapon Systems Engineer to lead the design, analysis, and integration of advanced weapon systems for critical national security missions. You will develop system architectures, performance models, and simulations; plan and execute system-level tests; and translate sponsor needs into robust technical solutions. Working in APL's collaborative, mission-driven environment, you'll partner with experts across disciplines, mentor junior engineers, and help transition innovative technologies from concept to fielded capability. Responsibilities Lead design, integration, and analysis of advanced weapon systems and subsystems Develop system architectures, performance models, and simulation frameworks Plan and execute system-level tests, evaluations, and experiments Collaborate with multi-disciplinary teams across guidance, control, sensors, and C2 Translate sponsor needs into technical requirements and system concepts Document designs, findings, and recommendations in technical reports and briefings Support technology transition, risk reduction, and system maturation activities Mentor junior engineers and contribute to technical peer reviews Required Skills Weapon systems engineering Systems engineering and architecture Modeling and simulation (e.g., MATLAB, Simulink, Python) Guidance, navigation, and control (GNC) fundamentals Systems requirements development and management System-level test and evaluation Systems safety and reliability analysis Do D acquisition and defense standards familiarity Configuration and data management tools Technical documentation and briefing