CAD Modeling and Simulation Engineer

Job
Location: CHANTILLY, VA, United States
Date Posted: Nov 26, 2025
Category: Engineering and Sciences
Subcategory: Modeling/Sim Engr
Schedule: Full-time
Shift: Day Job
Travel: No
Minimum

Clearance Required:

TS/SCI with Poly
Clearance Level Must Be Able to Obtain: None
Potential for Remote Work: On-Site
Benefits:

SAIC is seeking a CAD Modeling and Simulation Engineer in Chantilly, VA to support a government customer.

The successful candidate will:

• Develop and maintain physics‑based simulation models of spacecraft systems, including structures, sensors, and mission environments.
• Perform end‑to‑end performance modeling for satellite missions, integrating sensor, orbital, and environmental models.
• Create and modify CAD‑based satellite geometries, including material property assignments for use in thermal, structural, and radar/optical signature analyses.
• Conduct sensor phenomenology studies, including optical, infrared, or radar modeling for detection, tracking, and signature analysis.
• Perform orbital mechanics modeling including orbit determination, orbital maneuvering, and spacecraft flight dynamics.
• Use scripting languages (Python, MATLAB, or similar) to automate workflows, perform data analysis, and interface between simulation tools.
• Collaborate with multidisciplinary teams (systems engineering, GNC, payload, mission design) to ensure model fidelity and consistency.
• Generate technical documentation, simulation reports, and visualizations to communicate findings and support design decisions.
• Support trade studies and design reviews by providing modeling insights into performance impacts of design changes.

• Bachelor's or Master’s degree in Aerospace Engineering, Mechanical Engineering, Physics, or a related field with 5+ years of professional technical experience.
• 3+ years of experience in modeling and simulation for aerospace or space systems.
• Active Top Secret/SCI w/Poly Clearance.
• Proficiency with CAD tools (e.g., Solid Works, Creo, CATIA, NX, or similar) including geometry creation and material property definition.
• Strong understanding of sensor phenomenology—such as optical, infrared, or radar systems—and associated modeling methods.
• Intermediate Python programming experience, demonstrated through hands‑on experience with tasks such as data manipulation, automation, and development of Python‑based solutions. Experience with libraries such as Num Py, Sci Py, pandas, and matplotlib is beneficial.
• Ability to communicate technical results clearly in written and verbal formats.

SAIC accepts applications on an ongoing basis and there is no deadline.

SAIC® is a premier Fortune 500® mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, civilian and intelligence markets includes secure high‑end solutions in mission IT, enterprise IT, engineering services and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives.

We are approximately 24,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.5 billion. For more information, visit  For ongoing news, please visit our newsroom.

Please apply through the internal career site here >