Nuclear Mechanical Engineer II - Stress & Integrity

Holtec; Comunidad de Madrid; On-site; EUR 65,000 - 85,000; Full time

Job summary

Holtec is seeking a Mechanical Engineer II – Nuclear Systems in Madrid, Spain, to analyze and design mechanical components and reactor internals for advanced reactors including SMRs. The role focuses on stress analysis, fracture mechanics, fatigue life, and regulatory compliance within multidisciplinary projects.

The candidate will use ANSYS, LS-DYNA, and SolidWorks, ensuring ASME and nuclear regulatory code adherence, and will mentor junior engineers while contributing to licensing activities.

Qualifications

• Bachelor's degree in Mechanical, Structural, or Aerospace Engineering (MSE preferred).
• Eligibility to work under 10 CFR Part 810.
• 5-7 years of experience in mechanical design analysis and component integrity.
• Knowledge of material degradation mechanisms including brittle fracture and fatigue.
• Experience with numerical modeling and simulation tools such as ANSYS, LS-DYNA, Solidworks.
• Strong technical writing, communication, and collaboration skills.

Responsibilities

• Perform mechanical design and stress analysis for ASME Section III Class 1, 2, and 3 components and supports.
• Conduct detailed stress analysis using industry tools (ANSYS, LS-DYNA, MATLAB, Mathcad).
• Perform fracture mechanics and fatigue life evaluations of metal structures.
• Ensure compliance with nuclear codes and standards (ASME BPVC II/III/XI, ANSI/AISC N690, ANSI N14.6).
• Develop and review engineering deliverables including stress reports, design calculations, and fitness-for-service evaluations.
• Review vendor reports for technical acceptance and regulatory/contract compliance.
• Support fabrication, construction, and field issue resolution.
• Respond to regulator requests for information in support of licensing activities.
• Mentor engineers and provide technical leadership to other team members.

Skills

Stress analysis

Fracture mechanics

Fatigue evaluation

Regulatory compliance

Numerical modeling

Education

Bachelor's degree in Mechanical/Structural or Aerospace Engineering

Tools

ANSYS

LS-DYNA

SolidWorks

Job description

Holtec is seeking a Mechanical Engineer II – Nuclear Systems in Madrid, Spain, to analyze and design mechanical components and reactor internals for advanced reactors including SMRs. The role focuses on stress analysis, fracture mechanics, fatigue life, and regulatory compliance within multidisciplinary projects.

The candidate will use ANSYS, LS-DYNA, and SolidWorks, ensuring ASME and nuclear regulatory code adherence, and will mentor junior engineers while contributing to licensing activities.