Fissionaire

CAD Designer II (2D/3D) (Nuclear)

Madison, WI · Mid

Sponsorship not specifiedDetected 162 days ago

CybersecuritySolidWorksCreoAutoCADGD&TMechanical Design

About the role

If you thrive in high-accountability environments and want your work to directly shape future nuclear systems, this is where you'll make an impact.
Assist in vendor interface by providing clear fabrication packages, answering technical queries, and updating drawings as needed.

Develop detailed 2D and 3D CAD models for nuclear system components, mechanical assemblies, piping, shielding, and structural elements.
Maintain configuration control, drawing standards, revision logs, and documentation in accordance with nuclear QA frameworks (e.g., ASME NQA-1, ANSI/ANS standards).
Support design reviews by preparing accurate models, exploded views, interface checks, and tolerance analyses.
Collaborate closely with mechanical, nuclear, thermal-hydraulic, and systems engineers to refine concepts, resolve design issues, and ensure alignment across disciplines.
Contribute to continuous improvement of CAD workflows, libraries, and design standards.
You'll own the CAD workflow, support multidisciplinary engineering teams, and ensure every drawing stands up to nuclear-grade expectations.
Professional experience in CAD design for nuclear, energy, aerospace, or similarly regulated industries.
Experience in reactor design, radiation shielding, balance-of-plant systems, or nuclear fuel cycle equipment.

Associate's or Bachelor's degree in Drafting, Mechanical Design, Engineering Technology, or related field or 5+ years experience as a drafter/modeler.
Strong proficiency with modern CAD tools (e.g., SolidWorks, Inventor, Creo, AutoCAD, or similar).
Experience applying nuclear-industry standards (ASME, ASTM, RCC-MRx, etc.).
U.S. citizenship or permanent residency required.
Because government authorization timelines can vary, Fissionaire is unable to consider alternate resident statuses where required approvals may not be obtainable within a timeframe that meets business needs.

Familiarity with PLM/PDM systems (Windchill, Teamcenter, etc.).
Exposure to manufacturing processes, suppliers, and tolerancing best practices in regulated environments.
Security clearance eligibility.
What Success Looks Like
Your drawings are clean, accurate, and ready for fabrication-no guesswork, no rework.
You communicate clearly and catch issues early, keeping engineering and manufacturing aligned.

Conduct CAD-based simulations, clash detection, and fit-up validation using industry tools.

Fissionaire's management team is dedicated to this policy with respect to recruitment, hiring, placement, promotion, transfer, training, compensation, benefits, employee activities, access to facilities and programs, and general treatment d

We're pioneering the next generation of nuclear technology to deliver safe, scalable, and sustainable energy.
Our team is small, fast-moving, and mission-driven -combining deep technical expertise with a startup's sense of urgency.
As we grow, we're designing systems that will redefine what nuclear power can do for the world.
As part of the

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