Modeling and Simulation Engineer

MTSI is seeking to hire a motivated engineer with 5-10 years of experience in modeling & simulation, particularly with AFSIM or similar mission-level frameworks. The candidate will support a team delivering high-fidelity modeling, simulation, and analytical products of kinetic weapon system concepts for the Missile Defense Agency. This role offers the opportunity to work on high visibility, cutting-edge missile system programs and contribute to innovative solutions for national defense.

Key Responsibilities:

• Support mission-level modeling and simulation of weapon systems using AFSIM and related tools.
• Develop and maintain C++ models for fire control, engagement kinematics, and missile system performance.
• Conduct performance analysis and scenario-based simulations to evaluate GNC and fire control effectiveness.
• Collaborate with GNC engineers to integrate models, run large-scale simulations, and analyze results for missile and kinetic weapon concepts.
• Develop analytical products, technical reports, briefings, and visualizations to support DoD program decisions.
• Contribute to ongoing modeling and simulation efforts, including tool enhancement and scenario development.

Qualifications:

• U.S. Citizenship required (and ability to obtain security clearance).
• Bachelor's degree in Aerospace Engineering, Computer Science, Electrical Engineering, or a related field (MS preferred).
• 5-10 years of experience in modeling & simulation, preferably with AFSIM or other mission-level frameworks.
• Strong software development skills with solid understanding of object-oriented programming principles in C++.
• Experience developing, modifying, and debugging complex simulation models in C++.
• Familiarity with 6-DOF simulations, fire control systems, engagement modeling, or GNC concepts.
• Proficiency with modeling and simulation tools such as AFSIM, MATLAB, and Python.
• Ability to perform detailed system-level performance analysis and support requirements development.
• Strong problem-solving, analytical, and communication skills.

#LI-JJ1

• 
  
  
  Interesting Work:
  
  
  
  Our co-workers support some of the most important and critical programs to our national defense and security.
  
  
  
  
• 
  
  
  Values:
  
  
  
  Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.
  
  
  
  
• 
  
  
  100% Employee Owned:
  
  
  
  We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.
  
  
  
  
• 
  
  
  Great Benefits - Most Full-Time Staff Are Eligible for:
  
  
  
  
  



• Starting PTO accrual of 20 days PTO/year + 10 holidays/year
  
  
• Flexible schedules
  
  
• 6% 401k match with immediate vesting up to $9k annually
  
  
• Semi-annual bonus eligibility (July and December)
  
  
• Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account
  
  
• Up to $10,000 in annual educational reimbursement
  
  
• Other company funded benefits, like life and disability insurance
  
  
• Optional zero deductible Blue Cross/Blue Shield health insurance plan
  
  





• 
  
  
  Track Record of Success:
  
  
  
  We have grown every year since our founding in 1993.
  
  
  
  

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.