Nuclear Mechanical Design Engineer II – Stress & Integrity

Holtec International; Camden (NJ); On-site; USD 100,000 - 120,000; Full time

Benefits offered by this job

Industry-leading medical, dental, and/

Day1 eligibility

Hybrid work opportunities

401(k) with company match

Paid time off and holidays

Wellness program

Commuter benefits

Life and AD&D insurance

Education assistance

Employee assistance program

Job summary

Holtec International is seeking a Mechanical Engineer II - Nuclear Systems in Camden, NJ. You will analyze mechanical components and reactor internals, performing stress, fracture, and fatigue evaluations to support advanced reactors and SMRs.

Your work will span ASME Section III design, regulatory compliance, and technical leadership, mentoring junior engineers while coordinating with cross-disciplinary teams to deliver robust, licensable solutions.

Qualifications

• Bachelor’s degree in Mechanical, Structural, or Aerospace Engineering (MSE preferred).
• 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

Team collaboration

Education

Bachelor's degree in Mechanical Engineering

MSE preferred

Tools

ANSYS

LS-DYNA

SolidWorks

Job description

Holtec International is seeking a Mechanical Engineer II - Nuclear Systems in Camden, NJ. You will analyze mechanical components and reactor internals, performing stress, fracture, and fatigue evaluations to support advanced reactors and SMRs.

Your work will span ASME Section III design, regulatory compliance, and technical leadership, mentoring junior engineers while coordinating with cross-disciplinary teams to deliver robust, licensable solutions.