Modeling and Simulation Engineer
Modern Technology Solutions
Alexandria, VA · Posted September 3, 2026
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About the job
MTSI is seeking a Modeling and Simulation (M&S) Engineer to provide expertise for multi-domain defense simulation development and testing. The person in this position will utilize their M&S experience developing and using system, subsystem, and component models for aerospace applications, executing simulation trades, and performing Monte Carlo analysis.
Essential job functions will include but are not limited to:
Develop and implement mission-to-high fidelity level models for simulations to support strategy, technology/concept development, requirements, design, and test of communications equipment and systems.
Required Qualifications:
US Citizenship and an active secret clearance
Bachelor of Science in a technical discipline (i.e., engineering, mathematics, physics).
5+ years of relevant modeling and simulation experience.
Understanding of aerospace system functions and dynamics and how to model them.
Capability to perform analysis measuring key system performance metrics and verifying model behavior utilizing ground and flight test data.
Ability to create, test, and debug scripts, Python, and C++ programs.
Prior experience modeling entire systems or individual components, such as sensors, GNC, and propulsion.
Excellent communication skills (both oral and written).
Ability to apply engineering rigor to solve engineering/scientific problems.
Prior experience supporting a major defense acquisition program in a high-visibility environment with mission-critical responsibilities .
Self-starter who can work independently and in a collaborative team environment.
Desired Skills and Experience:
TS/SCI clearance
Master of Science degree in a STEM discipline.
Prior experience working with the AFSIM simulation framework is highly desired.
Experience modeling and analyzing RF and IR-based engagements of air and space platforms.
Proven ability to perform hi-fidelity operational system analysis to quantify sensor, weapon system, and kill chain effectiveness.
Experience developing briefings and presenting analysis results to high-level government customers to help them in their decision-making processes.
The pay range for this position is $120,000 year to $150,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI offers a full range of medical benefits, 401k, ESOP, paid time off, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled.
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