Demo

Model Based Systems Engineer

Space Systems Integration LLC
El Segundo, CA Full Time
POSTED ON 3/18/2026
AVAILABLE BEFORE 9/13/2026
Space Systems Integration (SSI) is a fast-growing engineering company that provides aerospace solutions to a variety of government and commercial customers. Our employees are forward-thinking, self-directed individuals who are committed to solving our customers’ technical challenges.

SSI is seeking a Model Based Systems Engineer for a role in El Segundo, CA.

Role and Responsibilities include:

  • Provide leadership advice on mission engineering strategies for SoS architectures and strategic messaging to key operational and government stakeholders
  • Provide systems engineering and mission architecting support
  • Technical requirements generation/review/compliance, space systems technical review and assessment, and risk assessment
  • Identify activities and functions critical to mission thread development, deriving and modeling the as-is and to-be functional and physical architectures
  • Provide program and technical insight to the modeling and analysis staff regarding system architecture designs, interfaces, schedule, and assumptions
  • Drive integration and utilization of Digital Engineering practices of Model-Based Systems Engineering and Modeling, Simulation, & Analysis to include the conversion of legacy Systems Engineering content into digital formats




Required Qualifications


  • Bachelor of Science in Engineering or a relevant discipline with 9 years of experience with:
    • Systems engineering and architecting for major systems acquisitions
    • Model-Based Systems Engineering (MBSE) methods and descriptive modeling frameworks such as SysML
    • Cameo Systems Architect or Sparx Enterprise Architect
    • DoDAF views on system of system architectures and plans



  • Must have an in-scope security background investigation (T5), adjudicated for SCI eligibility and enrolled in the Continuous Evaluation program (as applicable)
  • TS/SCI clearance required.
  • Travel is 10%



Preferred Qualifications:

  • Master’s Degree, 7 years of relevant experience is preferred
  • Fluency in Department of War architectural frameworks (e.g., DoDAF)
  • Military Space Operations with an emphasis in Space Domain Awareness programs and capabilities
  • Experience working in development environment and, or U.S. Government weapons system program office
  • Led the integration of MBSE with Modeling and Simulation leading to a validated and verified system architecture
  • Professional certification (e.g., Professional Engineer, INCOSE CSEP, etc.)
  • Knowledge of Digital Engineering and operational analysis processes and tools, as well as their application in producing data-driven analysis results




Space Systems Integration provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.

#ssi #weknowhowtobuildit #spacejobs

Target salary range: $140,000 - $170,000. The estimate displayed represents the typical salary range and bonus potential for this position based on experience and other factors.

Salary : $140,000 - $170,000

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