Research and Development Engineer; CFD

Modern Technology Solutions Incorporated (MTSI) is seeking a mid-level R&D Scientist/Engineer specializing in fluid dynamics and space-based EO/IR systems who develops and simulates advanced aerospace and defense systems for Department of Defense (DoD) and Intelligence Community (IC) applications. This role requires an active Top Secret/Sensitive Compartmented Information (TS/SCI) security clearance and hands‑on experience with EO/IR sensor data.

• U.S. Citizen
• BS in aeronautical or mechanical engineering, physics, or computer science
• +4 years of relevant experience in DoD / IC
• Active TS/SCI and willingness to take CI Polygraph
• Experience working with EO/IR sensor data
• Knowledge of space-based EO/IR sensor phenomenology
• Proficient in one or more of the following coding/scripting languages:
  Python, C/C++, MATLAB
• Proven ability to work/manage simultaneous projects and prioritize effectively in a dynamic R&D environment
• Excellent communication skills to articulate technical concepts to both technical and non-technical stakeholders
• Strong teamwork skills with the ability to collaborate effectively across multiple disciplines and departments, but also be self-sufficient when necessary

• GEOINT processing research and development experience
• Extensive experience working with DoD EO/IR sensor data
• Experience in modelling/simulating advanced foreign weapon systems signatures
• +6 years relevant experience
• Active TS/SCI with CI Poly
• MS in aeronautical or mechanical engineering, physics, or computer science

Our co‑workers support some of the most important and critical programs to our national defense and security.

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.

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.

• Starting PTO accrual of 20 days PTO/year + 10 holidays/year
• Flexible schedules
• 6% 401(k) 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

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.