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Systems Engineer II

Folsom, CA

 

Voyager is an innovative defense, national security and space 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 are real and the mission is bigger than any one person, forge the future with Voyager. 

Job Summary: 

The Level II Modeling, Simulation, and Controls Engineer supports the development and analysis of control systems and high-fidelity models across propulsion and aerospace applications. This role provides hands-on experience in algorithm development, simulation architecture, and physics-based modeling, with a focus on learning and applying best practices in support of program and customer needs. The engineer contributes under the direction of senior technical staff and participates in cross-functional teams to support system-level objectives.

Responsibilities: 

  • Assist in developing models and simulations of dynamic aerospace systems, including propulsion and control
  • Contribute to the design and validation of control algorithms for flight and propulsion systems
  • Support simulation architecture development for design studies, V&V, and hardware integration
  • Assist in generating and refining system and subsystem requirements by analyzing customer specifications, participating in design reviews, and collaborating with senior engineers
  • Perform controllability assessments under supervision, including time and frequency domain analysis
  • Support gain tuning and controller integration for various control system topologies
  • Assist in conducting system-level performance analyses such as sensitivity studies and Monte Carlo simulations
  • Support development of physics-based models representing mechanical, thermal, and aerodynamic behaviors
  • Assist with ballistics modeling and propulsion performance analysis tasks for solid rocket motor systems
  • Support modeling and simulation of actuation systems for propulsion control applications, including data analysis and integration into control system simulations under supervision.
  • Support creation and application of estimation and filtering techniques under supervision
  • Learn and apply modern control strategies, including state-space methods, in simulation tasks
  • Contribute to modeling and simulation efforts tied to propulsion concept evaluation and development
  • Participate in internal technical reviews, design walkthroughs, and documentation preparation
  • Collaborate with engineers across GNC, software, test, and systems teams
  • Document modeling approaches, assumptions, and results in technical reports and interface documents
  • Ensure modeling and simulation artifacts meet configuration, traceability, and verification standards

Required Qualifications: 

  • U.S. citizenship required due to government program requirements
  • Must have or be able to obtain and maintain an active DoD Secret Clearance
  • Demonstrated ability to contribute to engineering tasks across system development lifecycle
  • Strong systems thinking and eagerness to work across disciplines and technical domains
  • Foundational knowledge in modeling, control systems, and dynamic system behavior
  • Strong interest in growing technical skills in aerospace applications
  • Willingness to collaborate with senior engineers, participate in reviews, and receive mentorship
  • Commitment to technical accuracy, quality, and continuous improvement
  • Effective communicator with attention to technical detail and stakeholder engagement

Experience:

  • 2–4 years of experience in modeling and simulation, control system development, or system dynamics
  • Hands-on experience with simulation tools such as MATLAB/Simulink or Python for modeling control systems
  • Familiarity with propulsion system dynamics, especially solid rocket motors or controllable solids, is a plus
  • Prior work with system integration or controls validation in lab or test environments preferred
  • Experience working on or supporting government or defense programs is a plus

Education:

  • Required: Bachelor’s degree in systems engineering, aerospace engineering, mechanical, electrical engineering, or related STEM field from an accredited college/university
  • Preferred: Master’s degree in systems engineering or a related discipline is desirable and may substitute for 1 year of experience from an accredited college/university

Skills:

  • Working proficiency in MATLAB/Simulink, Python, or similar tools for control and simulation
  • Understanding of classical control techniques (PID, lead-lag, Bode/Root Locus methods)
  • Exposure to state-space modeling and estimation methods
  • Ability to interpret and contribute to SysML diagrams of product structure, behavior, and engineering process
  • Strong analytical and debugging skills in a model-based design environment
  • Clear communicator who can write and present technical content effectively
  • Eagerness to learn from senior team members and grow within the modeling and simulation discipline

Others:

  • Ability to travel up to 10% to support test events, program reviews, or customer interactions
  • Willingness to work in secure or classified environments
  • Enthusiasm for working on critical aerospace and defense challenges
  • Strong sense of ownership and accountability, with a growth mindset in a team-oriented culture

Salary Range: $78,209 - $120,502

Please click “Apply” to submit your application. 

Voyager offers a comprehensive, total compensation package, which includes competitive salary, a discretionary annual bonus plan, paid time off (PTO), a comprehensive health benefit package, retirement savings, wellness program, and various other benefits. When you join our team, you’re not just an employee; you become part of a dynamic community dedicated to innovation and excellence. 

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. 

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.  

Minority/Female/Disabled/Veteran 

The statements contained in this job description are intended to describe the general content and requirements for performance of this job. It is not intended to be an exhaustive list of all job duties, responsibilities, and requirements. This job description is not an employment agreement or contract. Management has the exclusive right to alter the scope of work within the framework of this job description at any time without prior notice. 

 

 

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