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Principal Systems Engineer
Elbit Systems of America

Elbit Systems of America
Posted 2026-09-21
About the role
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! Job Summary: The Principal Systems Engineer performs requirements analysis and management, technical planning, systems-level design, systems integration, verification and validation, cost and risk management, and supportability and effectiveness analyses for total systems. Also performs functional analysis, timeline analysis, detailed trade studies, and requirements interface definition studies to translate customer requirements into systems specifications. Analyses are performed at all levels of total system product to include: concept, design, fabrication, test, installation, operation, maintenance, and disposal. Ensure the logistical and systematic conversion of customer or product requirements into total system solutions that acknowledge technical, schedule, and cost constraints. Responsibilities and Tasks: • Perform requirements management, analysis, and allocations using tools such as DOORS. • Conceptualize, analyze, design, and oversee complex systems-level architecture design. • Perform modeling and simulation at the system level. • Recommend tools to improve systems engineering design of a product and procedures. • Develop systems specifications, master test plans, and other necessary artifacts. • Provide inputs into the integrated master schedules and track program progress. • Generate systems engineering artifacts in support of each program. • Lead cost estimates to support engineering activities. • Assist in verification and validation responsibilities. • Fully understand internal systems engineering procedures and mentor entry-level engineers. • Other related duties assigned by supervisor. Education, Experience/Knowledge & License/Certification: • Specific Degree Field Required: Aeronautical, Computer Science, Electrical, Electronic, Mechanical, Software or Systems Engineering. • Master’s degree plus 7 years’ experience OR Bachelor’s degree plus 9 years’ experience. • Training Prerequisites (Within One Year of Taking Position): ◦ ESD ◦ Safety Training, as dictated by the Safety Department • Advanced DOORS requirements management training • Systems Engineering Simulation and Modeling concepts • Systems Engineering methods and procedures Skills and Abilities: • DOORS requirements management tool suite. • Microsoft Office including the use of Excel and other desktop tools. • Microsoft Projects. • Systems-level analysis tools such as Mathlab or equivalent. • Systems-level block diagram capture tools such as Visio. • Other related systems engineering tools. 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. 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