Mission Modeling & Simulation Engineer (OPIR / Mission Engineering)

Overview Stellar Solutions, a nationally recognized “Great Place To Work”, has exciting opportunities providing engineering solutions for innovative new-entrant space companies, established space systems manufacturers, commercial space operators, and other industry stakeholders across the national security space community. Stellar Solutions is seeking a Mission Modeling & Simulation Engineer to support advanced mission engineering and digital analysis efforts within SSIO. In this role, you will contribute to enterprise-level mission thread analysis, architecture assessments, and large-scale simulation activities supporting next-generation space and defense capabilities. This position offers the opportunity to work across mission engineering, digital engineering, modeling & simulation, and systems analysis efforts supporting highly visible national security space programs. The selected candidate will collaborate with government customers, SETA/FFRDC organizations, and industry partners to support mission analysis activities that inform operational risk, architecture trade studies, and future capability decisions. Role/Responsibilities/Qualifications In this role, you will: Develop and execute mission-level modeling and simulation analyses supporting space and ground mission architectures Support mission thread analysis, architecture evaluations, and system-level trade studies Analyze simulation outputs and communicate technical findings to program leadership and government stakeholders Support technical interchange meetings, customer briefings, mission analysis reviews, and demonstrations to government stakeholders Collaborate with government, SETA, FFRDC, and contractor teams supporting enterprise mission engineering initiatives Assist with development of scalable cloud-based simulation and analysis workflows Support development of reusable modeling, simulation, and analysis frameworks Contribute to identification and assessment of mission risks, issues, and gaps (RIG) Develop high-fidelity simulation software and analysis tools for a diverse range of complex systems and validate these models against real-world data Perform code review for peers and provide technical feedback and suggestions to other engineering teams to drive platform improvement Required Qualifications: Bachelor’s degree in Aerospace Engineering, Systems Engineering, Electrical Engineering, Physics, Mathematics, Computer Science, or related technical discipline 3–7 years of experience in modeling & simulation, systems engineering, mission analysis, mission engineering, or digital engineering Experience supporting space, missile defense, OPIR, SDA, BMC3, or related national security space programs Experience with one or more technical tools/languages such as MATLAB, Python, , or similar modeling and analysis environments Strong analytical and problem-solving skills Strong data analysis skills working with large datasets Ability to communicate technical concepts effectively to both technical and non-technical audiences Experience working in collaborative, multi-organization technical environments Experience supporting customer briefings or technical presentations Experience supporting mission engineering or enterprise architecture analysis efforts Active TS/SCI clearance or ability to obtain and maintain one Preferred Qualifications: Familiarity with MBSE and digital engineering methodologies Experience with cloud-based simulation or distributed analysis environments Knowledge of space mission architectures, constellation analysis, or missile warning/tracking systems Experience supporting SSC, Space Force, SDA, or related defense organizations Compensation: The typical salary pay range for this position is USD $120,000 – $150,000 annually. Several factors are considered when extending an offer, including but not limited to, the role responsibilities, candidate’s work experience, education/training, key skills, internal peer equity, as well as market and business considerations. In addition to base salary, this position is eligible for a discretionary annual performance bonus, participation in our profit sharing/retirement plan (PSP), and a comprehensive benefits package. Deliverable(s) You will be part of a highly collaborative team supporting mission-critical national security space initiatives at the forefront of mission engineering and digital transformation. This role provides the opportunity to contribute to enterprise-scale modeling and simulation efforts that directly influence future operational capabilities and strategic mission decisions.