Research and Development Engineer (CFD)

Modern Technology Solutions, Inc.
401(k)
United States, Virginia, Springfield
Jun 09, 2026
Modern Technology Solutions, Inc. (MTSI) is hiring a Research and Development Engineer (CFD) in Dayton, OH. This position requires an active TS/SCI clearance with eligibility to obtain a CI Polygraph. Responsibilities: Apply deep technical knowledge of hypersonic aerothermodynamics and related modeling techniques to model, simulate, and analyze hypersonic systems. Work in a dynamic R&D environment where innovation and collaboration are highly valued. Use high-fidelity computational fluid dynamics CFD modeling applications. Required Qualifications:* Bachelor's degree in Aeronautical Engineering, Mechanical Engineering, Physics, or Mathematics. Minimum of 4 years of relevant experience in DoW or IC programs. * Strong knowledge of hypersonic aerothermodynamic phenomenology. Proficiency in using high-fidelity computational fluid dynamics CFD modeling applications. Proven ability to manage multiple projects and prioritize effectively in a fast-paced R&D environment. Strong communication skills capable of conveying complex technical concepts to both technical and non-technical stakeholders. Teamwork skills with the ability to collaborate effectively across disciplines and departments, while also being self-sufficient when needed. Desired Qualifications: Master's degree in Aeronautical Engineering, Mechanical Engineering, Physics, or Mathematics with coursework and/or research in the fields of hypersonic, physical gas dynamics, or numerical methods. 6+ years of relevant experience in the field. Advanced experience in GEOINT processing research and development. Extensive experience with academic, government, or commercial CFD tools and workflows. Expertise in modeling and simulating advanced foreign weapon systems' aerodynamic performance and signatures. Clearance Requirements:* Must be a U.S. Citizen. Active TS/SCI clearance with ability to obtain CI Polygraph. #LI-RC2 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 www.mtsi-va.com 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.