Modeling & Simulation Engineer/Scientist III

Start Date: Immediate JHNA, CTSi, and EXPANSIA have come together to form a Defense Technology platform named Aether Aerospace focused on delivering high-impact technologies, technology-enabled services and advanced manufacturing solutions to the U.S. Department of Defense and related national security customers. Backed by Falfurrias Management Partners, the platform brings together deep domain expertise across Army, Navy, and Air Force and Space Force programs, digital engineering, systems integration, and specialized manufacturing capabilities. The combined organization operates as a multi-entity aerospace and defense technology and tech-enabled services and manufacturing enterprise positioned for scalable growth, operational excellence, and long-term value creation. OVERVIEW Full-time/Permanent Employee Location: Dayton, OH We are seeking a Modeling and Simulation Engineer/Scientist III to support U.S. Air Force programs in Dayton, Ohio. In this role, you will develop and integrate high-fidelity models using the Advanced Framework for Simulation, Integration, and Modeling (AFSIM) to evaluate air and space systems, electronic warfare (EW) capabilities, and mission-level performance. Responsibilities include creating radio-frequency (RF) sensor and antenna models, building algorithms and simulation components, and integrating these elements into engagement- and theater-level AFSIM scenarios. You will work closely with Air Force stakeholders to support analysis, concept development, and acquisition decisions through physics-based modeling, scenario development, and Monte Carlo simulation execution. RESPONSIBILITIES * Develop RF sensor models, algorithms, and simulation software and conduct trade-space analysis for system verification * Develop complex antenna element and array models and integrate them into larger system simulations * Assess and verify antenna and system-level design characteristics and performance * Document software and hardware characteristics, simulation environment changes, test designs, and analysis results * Integrate models into engagement-level, theater-level, and hardware-in-the-loop simulation architectures * Integrate models and system interactions within AFSIM environments for mission-level assessments * Conduct in-depth studies and analyses, formulate parameters, and validate modeling and simulation results * Lead the design, specification, and development of new modeling tools and system enhancements * Provide technical leadership and mentorship to junior engineering staff * Exercise independent judgment in solving highly complex technical problems and provide expert recommendations * Maintain broad knowledge of engineering disciplines, modeling techniques, and programming principles * Work closely with Government partners and interface effectively with customers and data suppliers * Prepare and present technical reports, proposals, brief