Model Systems Engineer

Overview

Model Based Systems Engineers are needed to support an advanced aerospace development effort for the Phantom Works program in St. Charles, MO. This innovative program focuses on next‑generation technologies for defense and flight systems. In this role, you will collaborate with Integrated Product Teams to define and develop system architectures from initial design through product verification, shaping and implementing system modeling best practices to ensure consistency, accuracy, and efficiency throughout the program lifecycle.

The selected candidate will work closely with specialty engineering and analysis teams to expand modeling infrastructure and integrate MBSE practices into a connected digital ecosystem. This includes supporting the development and implementation of open‑architecture standards and APIs to link MBSE models with authoritative digital sources of truth, such as digital twin repositories.

• Work collaboratively with a multi‑disciplinary team to decompose system requirements into functional and logical architectures and allocate logical architecture to physical implementation.
• Lead the cross‑functional team to define and maintain the system’s requirements, interfaces, behaviors, and verification requirements.
• Conduct Systems and Systems of Systems Analysis and Trade Studies utilizing MBSE.
• Capture system requirements traceability within the system architecture model.
• Apply model‑based system engineering (MBSE) methodology to develop system architectural views using Systems Modeling Language (SysML).
• Utilize the system architecture model in support of systems engineering milestone reviews across the lifecycle, such as SRR, SDR, PDR, CDR, SVR, etc.
• Leverage Systems Engineering and MBSE experience to define, implement, and maintain the MBSE approach to meet the customer’s digital engineering requirements/reference architectures and Air Dominance MBSE best practices.
• Develop profiles, macros, plugins, and customizations for the Magic Systems of Systems Architecture (MSOSA) toolset to meet the needs of the program contract.
• Develop processes, work instructions, and templates for deploying engineering analyses in the System Architecture Model.
• Provide input to improve MBSE training, processes, and tools continuously.
• Mentor systems engineers in MBSE processes and tools.
• Foster strong customer relationships.

• Due to facility security requirements, only U.S. citizens are eligible for consideration at this time.
• Ability to obtain a Secret Clearance in a reasonable timeframe.
• Ability to obtain Special Program Access or other government access requirements, if needed.
• 15 or more years of related experience.
• 3 or more years of experience with systems engineering processes and tools.
• 1 or more years of experience creating MBSE system models in Cameo, Magic Systems or Systems Architect (MSOSA), Rhapsody, or a similar modeling tool.
• Bachelor of Science from an accredited course of study in Engineering, Engineering Technology, Chemistry, Physics, Mathematics, Data Science, Computer Science (or related technical discipline).

• Active Secret Clearance (or higher).
• 5 or more years of related work experience.
• Experience applying and teaching systems engineering processes and principles.
• Experience/domain knowledge of system architecture, requirements, interface definition, verification, and validation.
• Experience with complex systems development and integration (e.g., aircraft systems, communication systems, avionics systems, etc.).
• Experience modeling or simulating complex systems.
• Experience with implementation and maintenance of systems engineering tools, schedules, and metrics (i.e., MSOSA/Cameo, DOORS, Earned value management).

Cimarron is a global solutions company with a strategic partnering approach to satisfying customer‑driven requirements. We ensure customer success with a modern approach and experienced leadership. Driven by an entrepreneurial spirit, Cimarron is fueled by highly skilled employees, developing new innovative technologies, and delivering superior products and services. We believe in recognizing employees’ worth by offering competitive salaries and benefits, including health, dental, vision insurance, 401(k) contributions, educational reimbursement, and more.

Cimarron is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or any other characteristic protected by federal, state, or local law.