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Salary
≈ $107k – $217k per year (Estimated)
Location
In office (Merrimack)
Seniority
Principal · 8+ years exp

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 29, 2026. Twenty-Six Defense scores B on the Alion truth index.

Overview
Company
Impact
Profile match
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 Principal Mechanical Engineer researches, plans, designs, develops, analyzes and tests a variety of mechanical equipment items and systems, including chassis, hardware assembly, installation hardware and installation design.

 

Responsibilities and Tasks:

Ability to apply practical engineer science, design and technology.

Understanding of current manufacturing processes and how they relate to design.

Conceptualize, design and oversea fabrication of efficient complex mechanical systems and analyze for manufacturability and cost.

Be able to understand and produce engineering drawings.

Create procedures for carrying out various mechanical testing.

Communicate changes in design and assembly with management and production staff.

Estimate cost to produce design including material and labor costs (assembly and fabrication).

Calculate mechanical requirements to meet system design specifications.

Understanding of static and dynamic events and how they relate to structural integrity.

Ability to design electronic packages for harsh environments and maintain required reliability.

Basic understanding of electronic circuits and their effect on mechanical performance.

Working knowledge of techniques to mitigate EMI issues.

Other related duties as assigned by supervisor.

 

Education, Experience, License, or Certification:

Bachelor's degree is required

Master's degree is preferred

Specific Degree Field Required: Aerospace, Software/Computer Science, Electrical, Electronic, Electro-Optical, Mechanical, or other applicable technical discipline

8+ years of relevant professional experience

Training Pre-requisites (Within One Year of Taking Position):

ESD

Safety Training, as dictated by Safety Department or required by program

 

Skills and Abilities:

3D Modeling (Pro/E, Catia, Solidworks, etc. Solidworks preferred).

3D Engineering analysis tools. (ANSYS/Solidworks Simulation etc.).

Microsoft Office including the use of Excel and an engineering tool.

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