Nuclear Mechanical Engineer II — Stress & Integrity (Hybrid)

Holtec; Pittsburgh (Allegheny County); Hybrid; USD 100,000 - 120,000; Full time

Benefits offered by this job

Hybrid work opportunities

Medical, dental, and vision coverage

401(k) retirement plan with matching

Paid time off

Education assistance

Commuter benefits

Life and AD&D insurance

Employee assistance program

Job summary

Holtec is seeking a Mechanical Engineer II – Nuclear Systems to join our team in supporting the analysis, design, and structural integrity assessment of mechanical components for advanced reactors including SMRs. You will apply stress analysis, fracture mechanics, and fatigue evaluation within ASME and nuclear regulatory frameworks.

Responsibilities include analyzing components with leading tools (ANSYS, LS-DYNA, SolidWorks), reviewing vendor reports, mentoring engineers, and supporting

Qualifications

• Bachelor’s degree in Mechanical, Structural, or Aerospace Engineering.
• 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

Technical writing

Communication

Collaboration

Mentor leadership

Education

Bachelor’s degree in Mechanical, Structural, or Aerospace Engineering

MSE preferred

Tools

ANSYS

LS-DYNA

SolidWorks

MATLAB

Mathcad

Job description

Holtec is seeking a Mechanical Engineer II – Nuclear Systems to join our team in supporting the analysis, design, and structural integrity assessment of mechanical components for advanced reactors including SMRs. You will apply stress analysis, fracture mechanics, and fatigue evaluation within ASME and nuclear regulatory frameworks.

Responsibilities include analyzing components with leading tools (ANSYS, LS-DYNA, SolidWorks), reviewing vendor reports, mentoring engineers, and supporting