Mechanical Design Engineer – Reactor Internals (In-Vessel Shielding)

Location: Hybrid role based at 9801 Washingtonian Boulevard, Gaithersburg, Maryland, with 4 days in the office. Standard hours are 8:00am–5:00pm ET, Monday–Friday. Travel is up to 10% as needed.

Salary: $115,000–$140,000 per year

Company

hirify.global develops advanced high-temperature gas-cooled nuclear reactors and related nuclear hardware.

What you will do

• Design and develop in-core shielding elements and reactor vessel internals from concept through detailed design, manufacturing, testing, and commissioning.
• Define requirements, interfaces, design bases, criteria, and applicable industry codes and standards for nuclear structures, systems, and components.
• Perform structural, thermal, hydraulic, and other engineering calculations using hand calculations and analytical tools.
• Create and maintain CAD-generated engineering models and integrate designs across engineering teams, partners, and suppliers.
• Assess manufacturability, assembly, integration, verification, validation, and qualification of safety-related nuclear hardware.
• Prepare design basis documents, technical reports, calculations, drawings, V&V plans, and engineering reviews in accordance with quality and configuration-management procedures.

Requirements

• Bachelor’s degree in mechanical engineering or a related engineering discipline from an accredited institution.
• Typically, at least five years of engineering experience, with alternatives for relevant master’s or doctoral study.
• Proficiency with engineering hand calculations and experience designing mechanical or fluid systems, assemblies, or components.
• At least one year of hands-on experience delivering hardware or manufacturing processes in a production environment.
• Experience with CAD and PLM software such as UG/NX, SolidWorks, Pro-Engineer, Teamcenter, Windchill, or similar tools.
• Experience with hardware ownership, including manufacturing and testing oversight.

Nice to have

• Commercial nuclear, naval nuclear, or advanced reactor industry experience.
• Experience with reactor internals, in-core structures, shielding components, graphite assemblies, or reactor vessel internal components.
• Knowledge of gas-cooled or graphite-moderated reactors, high-temperature materials, and nuclear shielding materials.
• Experience designing for combined thermal, structural, irradiation, and seismic loading.
• Experience applying ASME Section III, NRC requirements, and nuclear quality assurance standards.

Culture & Benefits

• Cross-functional collaboration across reactor core, vessel internals, structural, thermal-hydraulic, and systems engineering disciplines.
• 401(k) plan with employer match.
• Medical, dental, and vision insurance.
• Life and disability insurance and paid time off.
• Tuition reimbursement and professional development support.