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Location
In office (Merrimack)
Seniority
Middle · 2+ years exp

Confirmed on the employer's own hiring board on Nov 11, 2026. First seen by Alion on Nov 10, 2026. Twenty-Six Defense scores B on the Alion truth index.

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Twenty-Six Defense is a US defense technology company headquartered in Fort Worth, Texas, supplying night vision, airborne systems, effectors and seekers, maritime, border protection and sustainment solutions to the US armed forces. Formerly known as Elbit Systems of America, it builds products such as the ENVG-B enhanced night vision goggle and operates manufacturing and engineering sites in Roanoke, Talladega, Merrimack, Charleston, Boca Raton and Tucson. It hires assemblers, quality inspectors, manufacturing, electrical and supplier quality engineers, engineering technicians, contracts administrators and accounting specialists.

Job Summary: The Systems Engineer II participates in the design, development, testing, and analysis of products, equipment or processes; and performs a variety of assignments, under close guidance, requiring the application of basic engineering and scientific principles and techniques. Systems engineering covers the full product lifecycle, from concept through development and deployment, and ultimately, disposal. It concentrates on the design and application of the whole system as distinct from the parts. It involves looking at a problem in its entirety, taking into account all the facets and all the variables and relating the social to the technical aspect. The incumbent will assist in the design, development, testing, and analysis of products, equipment or processes; and perform a variety of assignments, under close guidance, requiring the application of basic engineering and scientific principles and techniques. This role will find analytical skills and ability to plan and lead system engineering activities will be challenged on a daily basis.

 

Responsibilities and Tasks:

Assist system engineers with subjects related to all aspects of systems engineering, including, but not limited to:

Requirements analysis

Systems architecture and detailed design

Simulation and modeling of complex systems

Preliminary and Detailed design

Prototyping

Data Analysis and Process Improvement

Integration and testing/verification

System troubleshooting

Provide individual technical contribution and systems engineering leadership in the development of advanced systems

Work assignments through the development cycle from concept development, system trade-off analysis, system requirements definition and flow down, system architecture design, system integration and test…all the way down to evaluation of system performance at both the component and system level.

Support engineering project teams in the pursuit of new business, including the definition of advanced design concepts to address customer needs, preparation of engineering inputs, cost estimates and schedules for proposals.

Utilize and maintain existing analytical models, develop new models, design tests, and validate performance simulations using standard or developed test equipment.

Conduct research and prepare technical documentation based on findings, to include recommendations or alternative proposals for action.

Work with variety of stakeholders including interfacing with internal and external project teams, company personnel (Engineering, Operations, Program Management, Business Development), and the customer community.

 

Education, Experience, License, or Certification:

Bachelor’s degree in Engineering, Computer Science, or related technical field

2 or more years of related experience

Experience with C/C++ software development

Candidate must hold or be able to obtain a SECRET security clearance

Experience in embedded, real-time, or hardware-adjacent software environments preferred

Experience working in classified or defense environments is a plus

Experience supporting integrated hardware-software systems beneficial

 

Skills and Abilities:

Requires excellent written and oral communication skills, the ability to understand and follow complex, detailed instructions, and the ability to work both independently and in a team environment.

Must be able to approach technical problems in a logical and scientific manner.

Must be flexible and able to handle multiple priorities, and be able to work for short to moderate periods of time without direct supervision.

Advantage - Have knowledge and experience in the development of Concept(s) of Operation, requirements development and management using dedicated tools (Cameo/Doors), conceptualization and analysis of complex systems architecture design through modeling, system/subsystem integration/test planning and execution, and qualification testing

Desire to learn new skills; examples:

RF (radar, microwave comms, etc)

Power (AC 120/240V, DC 5/12/24/28/48V, conversion, distribution)

IT and networking

Scripting/automation of tasks

Ability to take in customer needs and scenarios, and develop solutions

Demonstrated success in present field (electrical/mechanical/SW, etc) - specific accomplishments beyond team success

Experience/comfort/ease talking with customers/end users

Can clearly articulate plans and actions taken

Thinks logically through new/unfamiliar scenarios

 

Travel/Physical Requirements:

Ability to travel 20% to support projects.

Travel; outdoor field work will be required at different weather conditions

Must be a “US Person” and have ability to obtain security clearance. Existing clearance is an advantage.

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