Senior Modeling Engineer

Company Information Twenty-Six Defense, headquartered in Fort Worth, Texas, is a leading provider of high-performance products, system solutions, and aftermarket support services focusing on the defense, homeland security, and commercial aviation markets. With facilities throughout the U.S., Twenty-Six Defense is dedicated to supporting those who contribute to the national security of the United States. Twenty-Six Defense is wholly owned by Elbit Systems Ltd. (NASDAQ: ESLT and TASE: ESLT), a global high-technology company engaged in a wide range of programs for innovative defense and commercial applications.

Fueled by more than 800 talented employees and a proud 65-year legacy of night vision production excellence, Twenty-Six Defense’s Warfighter Systems business is rooted in the heart of Virginia’s Roanoke Valley. Surrounded by the scenic beauty of the Blue Ridge Mountains, you’ll find a unique blend of southern hospitality, outdoor adventure, and the energy of a thriving city – all alongside a purpose you can be proud of coming to work each day.

As a world leader in low-light sensor technology, the Warfighter Systems team is engineering the future of image intensifiers and night vision goggle systems as we enter a new era of the networked battlespace. Trusted by the U.S. and nearly 100 allied countries, our technology provides support to those in harms’ way during the most critical moments with one goal in mind: bring them home safely.

The work our employees perform each day plays a direct role in national security, and our shared purpose is what truly makes Warfighter Systems so extraordinary. Come join our collaborative team where each voice is valued in a setting where you can thrive, develop, and make a true impact!

Position Overview We are seeking a highly skilled Modeling Engineer to develop, validate, and apply advanced computational models that support the design and optimization of next‑generation sensor and system technologies. The ideal candidate combines deep theoretical knowledge with strong practical intuition and has a demonstrated ability to translate modeling insights into real‑world physical implementations. This role provides technical leadership in modeling methodologies, simulation frameworks, numerical analysis, and data interpretation. The Senior Modeling Engineer collaborates closely with cross‑functional teams to define modeling requirements, drive predictive insights, and accelerate development across complex engineering programs.

Key Responsibilities

• Develop advanced multi-physics models using ANSYS, including Electromagnetic, Static and Dynamic Structural, Fluid Flow, Atomic Flow, and Surface Kinetics simulations.
• Correlate modeling results with experimental data to ensure accuracy, reliability, and predictive capability.
• Work closely with experimental, design, and systems engineering teams to guide physical prototypes and product development.
• Translate complex physical phenomena into clear, actionable insights for technical and non‑technical stakeholders.
• Drive the transition from theoretical models to functional hardware, ensuring model fidelity throughout development cycles.
• Document modeling approaches, assumptions, and results; present findings to cross‑functional teams and leadership.
• Conduct advanced numerical analysis using tools such as FEA, CFD, MBD, or multi-physics simulation environments.
• Mentor junior engineers in modeling best practices, numerical methods, and analysis tools.
• Evaluate new modeling tools, technologies, and techniques to continuously improve simulation capabilities.
• Communicate results and model limitations clearly to technical and non‑technical stakeholders.

Required Qualifications

• PhD in Engineering, Physics, Applied Mathematics, or a related field; or MS with 3+ years of relevant experience; or BS with 6+ years of relevant experience.
• Proven ability to relate simulation results to experimental data and physical behavior.
• Hands‑on experience in ANSYS multi-physics environments, including Electromagnetic, Structural (Static & Dynamic), Fluid Dynamics, and surface/atomic‑scale phenomena.
• Demonstrated history of moving models from concept to physical implementation.
• Strong capability in explaining and interpreting physical phenomena, both verbally and in written form.
• Excellent problem‑solving skills and a collaborative mindset.
• Experience with multi-physics modeling (thermal‑structural, fluid‑structure interaction, electromagnetic‑mechanical coupling, etc.)

Preferred Qualifications

• Experience with sensor systems, advanced materials, or semiconductor processes.
• Familiarity with scripting or automation for simulation workflows.
• Experience supporting R&D or advanced technology development programs.

Here Are Some Of The Great Benefits We Offer

• Most locations offer a 9/80 schedule, providing every other Friday off
• Competitive compensation & 401(k) program to plan for your future
• Robust medical, dental, vision, & disability coverage with qualified wellness discounts
• Basic Life Insurance and Additional Life & AD&D Insurances are available
• Flexible Vacation & PTO
• Paid Parental Leave
• Generous Employee Referral Program
• Voluntary Benefits Available: Longer Term Care, Legal, Identity Theft, Pet Insurance, and more
• Voluntary Tricare Supplement available for military retirees

Why Roanoke, Virginia?

• Lower cost of living
• Family-friendly area
• Career and economic growth
• Scenic beauty
• Outdoor enthusiast’s dream

This job description does not list all the duties of the job. You may be asked by your supervisors or managers to perform other duties. The employer has the right to revise this job description at any time. The job description is not an employment contract. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of this position. Twenty-Six Defense is an equal opportunity employer as to all protected groups, including protected veterans and individuals with disabilities.

• For Virginia-based positions only* In accordance with Virginia DOL requirements, the listed salary range reflects the anticipated base pay range for this role. Actual compensation will be determined based on factors including skills, experience, education, certifications, business needs, internal equity, and geographic location. Compensation may vary in different locations based on market conditions and cost-of-labor considerations.

Please ensure your résumé meets the Dayforce upload requirements. Dayforce supports résumé files up to 4 MB. To avoid upload issues, please: save your résumé as a PDF, remove photos/graphics/embedded objects, ensure the file is under 4 MB, and avoid password‑protected PDFs. If you encounter difficulties, try using a different browser (Chrome, Edge, or Safari), an incognito/private window, clearing browser cache, or disabling browser extensions. If you are unable to upload your resume for parsing, you may manually add resume details and/or attach your resume to the Additional Documents section. If you have exhausted all troubleshooting issues above, you may contact [email protected]. NOTE: Simply emailing a resume to this inbox will not be considered an official application to any job posting.