Modeling Simulation Software Engineer

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 Modeling Simulation Software Engineer for a role in El Segundo, CA.

• Be a member of a fast‑paced multidisciplinary mission operations modeling, simulation, and analysis team informing the United States Space Force acquisition decision process.
• Develop and test simulation applications; integrate mission simulation tools into an automated system‑level trade study execution architecture.
• Define requirements, specify designs, and implement an ever‑growing portfolio of space mission operations analysis simulations and trade studies.

• Bachelor’s degree in aerospace, astronautics, mathematics, or physics and five (5) years of experience.
• At least one programming language: MATLAB, Python, Java, C#, or C++.
• Live, virtual, and/or constructive (LVC) simulation techniques and technologies.
• Simulation development experience with simulation environments such as STK, AFSIM, GMAT, or Free Flyer.
• MATLAB and/or Simulink or other simulation scripting languages.
• Preparing and delivering presentations and technical demonstrations.
• Satellite orbital mechanics & maneuvers, remote sensing, spacecraft launch/command/control, and/or satellite communications.
• Equivalent experience with airborne systems is applicable.
• Managing files & directories, network file sharing, installing software & licenses, and command line shell (Windows Cmd or Bash).
• Active TS clearance with in-scope T5/SSBI, SCI eligibility and participation in Continuous Evaluation.
• Must meet all requirements for SCI and SAP access and be willing to undergo a polygraph examination.
• Travel is 10%.

• Simulation software development, test, and integration experience in a team environment. Agile methodology and Atlassian Jira beneficial.
• Prior industry experience in aerospace or space & defense.
• Systems engineering, with experience defining and executing trade studies. Engineering methodologies such as MBSE, MDAO, or Model-Based Design are a plus. Demonstrated knowledge of supporting toolsets such as Cameo Enterprise Architect, Sparx Systems EA, or Ansys Model Center would be helpful.
• Participation in engineering peer reviews, both as a developer and as a reviewer.
• Advanced degree in engineering with emphasis on applications to space launch, orbit propagation, and maneuvering.
• Professional certification (e.g., Professional Engineer, INCOSE CSEP, ITEA CTEP, Agile PM/PO, OMG OCSMP).

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.

Target salary range: $120,000 - $160,000. The estimate displayed represents the typical salary range and bonus potential for this position based on experience and other factors.