Senior Mechanical Design Engineer - Nuclear Steam Generator

X-Energy, LLC; Rockville (MD); On-site; USD 131,000 - 234,000; Full time

Benefits offered by this job

401k with employer match

Medical/Dental/Vision insurance

Life and Disability insurance

Paid Time Off

Tuition Reimbursement

Job summary

X Energy, LLC in Rockville, MD seeks a Mechanical Design Engineer to lead the design of mechanical systems for next‑generation nuclear reactors, with a focus on safety‑critical SSCs and verification through calculations and analyses.

You will mentor junior engineers, coordinate with stakeholders, and ensure high-quality deliverables within a fast‑paced production environment. Four‑day in‑office schedule, 8:00am–5:00pm.

Qualifications

• Bachelor’s degree in mechanical engineering or related discipline required; Master’s or Ph.D. may substitute for experience (2–3 years per level).
• 15–20 years of engineering experience in production or design environment with hands-on development and testing oversight.
• Proficiency in engineering hand calculations and CAD/PLM software (UG/NX, SolidWorks, Pro‑Engineer, Teamcenter, or Windchill).

Responsibilities

• Develop mechanical/physical concepts and SSCs for nuclear products with a focus on safety.
• Coordinate with stakeholders to collect requirements, interfaces, and design criteria.
• Plan and perform analyses to assess SSCs against specifications.
• Perform hand calculations and use analytical tools to verify SSC performance.
• Provide independent reviews of engineering deliverables and communicate professionally.
• Mentor junior team members and stay current with industry best practices.

Skills

Engineering hand calculations

Analytical thinking

CAD/PLM software

Project teamwork

Education

Bachelor’s degree in mechanical engineering

Master’s or Ph.D. may substitute for experience

Tools

UG/NX

SolidWorks

Pro-E (Creo/Parametric)

Teamcenter

Windchill

Job description

X Energy, LLC in Rockville, MD seeks a Mechanical Design Engineer to lead the design of mechanical systems for next‑generation nuclear reactors, with a focus on safety‑critical SSCs and verification through calculations and analyses.

You will mentor junior engineers, coordinate with stakeholders, and ensure high-quality deliverables within a fast‑paced production environment. Four‑day in‑office schedule, 8:00am–5:00pm.