Modeling & Simulation Systems Engineer III

Voyager is an innovative space, defense, and national security technology company committed to advancing and delivering transformative, mission-critical solutions. We tackle the most complex challenges to unlock new frontiers for human progress, fortify national security, and protect critical assets to lead in the race for technological and operational superiority from ground to space.

Forge the Future: Join Voyager Technologies The future belongs to those who build it. At Voyager Technologies, we’re building technologies that protect lives, expand frontiers and prepare us for what’s next. And we’re doing that with people who are wired to solve, build, adapt and lead. These roles are not for the faint of heart. You’ll help lay the foundation for humanity's future.

Join a culture where innovation thrives, curiosity is rewarded, and impact is real. We’re a company of doers, thinkers and builders, united by purpose and grounded in reality.

If you want to put your skills to work where the stakes The Systems Engineer III – MSAD is responsible for contributing to the design, development, and analysis of modeling, simulation, and control systems supporting propulsion and aerospace systems.

The role supports program execution through modeling, algorithm development, system-level performance assessments, and multidisciplinary collaboration, with increasing technical independence and ownership under the guidance of senior engineers. The position reports to the Engineering Department Manager and is part of the Strategic Systems department based in Folsom, CA.

This role is hybrid and is located in Folsom, CA. ## In this role, the essential functions are - Develop models and control algorithms for propulsion, flight control, and guidance subsystems. - Support development of system simulation architectures for design iteration, verification, and validation. - Perform dynamic system studies and data analysis to assess system behavior, validate models against test data, and improve simulation fidelity and reliability. - Support control system topology definition, gain-tuning methodologies, and model anchoring techniques. - Contribute to program performance engineering through requirement derivation, margin analysis, performance trade studies, and Monte Carlo, sensitivity, and parametric analyses. - Apply physics-based modeling to mechanical, thermal, and aerodynamic subsystems and support modeling and simulation planning for new programs and R&D initiatives. - Collaborate with multidisciplinary GNC, software, systems, and test teams and participate in technical reviews and milestone events. - Author technical documentation, support technical trade studies and concept maturation, and mentor less experienced engineers as needed. ## Minimum Qualifications - Bachelor’s or master’s degree in systems engineering, aerospace engineering, mechanical engineering, electrical engineering, or a related STEM field from an accredited college/university. - 4–7 years of experience in modeling, simulation, control systems, or estimation algorithm development in the aerospace or defense industries. - Strong background in dynamic system modeling, control system design, and simulation infrastructure. - Proficiency in MATLAB/Simulink, Python, or equivalent modeling and control toolchains. - Understanding of classical control techniques and competency in verification and validation of models and their use within system architectures. - Demonstrated ability to apply physics-based modeling and multi-domain simulation development, including propulsion system modeling and data analysis for model validation. - Ability to generate SysML diagrams covering product structure, behavior, technical logic, engineering processes, and test execution. - S. citizenship is required due to government program requirements, and must have or be able to obtain and maintain an active DoD Secret Clearance. ## Preferred Qualifications - Experience in propulsion modeling, including solid rocket motors and controllable solids. - Prior experience supporting Department of Defense (DoD), Missile Defense Agency (MDA), or equivalent government programs. ## Travel, Physical, and/or Government Mandated Requirements - Travel up to 10% for technical reviews, tests, or customer engagements. - Comfortable working in secure or classified environments. - Self-motivated and adaptable in a fast-paced, high-accountability development setting. - Committed to advancing aerospace modeling and control capabilities in national defense.

Voyager offers a highly competitive total compensation package designed to support the well-being, growth, and success of our employees.

Employees benefit from a flexible and comprehensive rewards program that supports both professional and personal well-being. - Flexible Time Off (FTO), empowering employees to take the time they need to recharge and maintain a healthy work-life balance - Comprehensive medical, dental, and vision coverage for employees and their families, with a significant portion of premiums covered by the company and many benefits paid at 100% for employees - Flexible, affordable gym memberships with 12,700+ options nationwide - 401(k) retirement plan with a 50% company match on contributions up to 8% - Company wellness programs that support physical and mental well-being - Additional voluntary benefits and employee support resources - The opportunity to work alongside a highly talented team in an innovative, mission-driven environment The good faith base salary rangefor this role is$103,100–$151,400at the time of this posting.

Where you fall within the range depends on your experience, skills, and location. This range reflects base salary only and does not include benefits or bonus/incentive. This range may be adjusted in the future. This position is incentive plan eligible. Voyager offers a highly competitive total compensation package designed to support the well-being, growth, and success of our employees.

Employees benefit from a flexible and comprehensive rewards program that supports both professional and personal well-being. - Flexible Time Off (FTO), empowering employees to take the time they need to recharge and maintain a healthy work-life balance - Comprehensive medical, dental, and vision coverage for employees and their families, with a significant portion of premiums covered by the company and many benefits paid at 100% for employees - Flexible, affordable gym memberships with 12,700+ options nationwide, including 24 Hour Fitness, EoS Fitness, Crunch Fitness, Anytime Fitness, Blink Fitness, Chuze Fitness, and more!

No long-term contracts and FREE on-demand workout videos before you enroll - 401(k) retirement plan with a 50% company match on contributions up to 8%, supporting long-term financial security - Company wellness programs that support physical and mental well-being - Additional voluntary benefits and employee support resources - The opportunity to work alongside a highly talented team in an innovative, mission-driven environment Voyager is an Equal Opportunity Employer.

Employment decisions are made without regard to race, color, religion, national or ethnic origin, sex, sexual orientation, gender identity or expression, age, disability, protected veteran status, or other characteristics protected by law. To conform to U.S.

Government export regulations, including the International Traffic in Arms Regulations (ITAR) (22 CFR Parts 120–130) and the Export Administration Regulations (EAR) (15 CFR Parts 730–774), applicants for this position must be a U.S. Person: a US Citizen, a lawful permanent resident of the U.S., or a protected individual as defined by 8 U.S.C. § 1324b(a)(3).

Applicants must be eligible to obtain any required export authorizations from the U.S. Department of State or the U.S. Department of Commerce. Minority/Female/Disabled/Veteran The statements contained in this job description are intended to describe the genera