The

Piping Engineer

at Holtec International, through its subsidiary SMR LLC, supports the analysis and design of nuclear piping systems for the SMR‑300, an advanced small modular reactor developed to deliver safe, secure, and reliable clean energy. This role focuses on ASME Section III Class 1, 2, and 3 piping design and works closely with multidisciplinary engineering teams to ensure systems meet safety, regulatory, and quality requirements, making it well suited for an engineer with strong piping stress analysis expertise, experience with industry‑standard tools, and the ability to collaborate effectively in a complex technical design environment.

Location: Madrid, Spain

Primary Responsibilities:

Perform nuclear piping stress analyses using AutoPIPE in accordance with ASME Section III Class 1, 2, and 3 (NC/ND) requirements

Analyze pipe supports and coordinate closely with pipe support design teams to ensure structural adequacy and proper integration

Prepare, review, and maintain piping engineering deliverables, including stress analysis reports, isometric drawings, and line lists

Support Smart3D piping models and resolve piping layout, flexibility, and stress interface issues

Collaborate with structural, mechanical, and systems engineering teams to resolve design and analysis challenges

Provide technical support during fabrication and construction, addressing piping‑related inquiries and field issues





Review supplier and vendor documentation for compliance with design requirements and applicable codes and standards

Ensure engineering work meets quality, completeness, and regulatory expectations in accordance with internal procedures and governing codes

Requirements:

Bachelor’s degree in Mechanical Engineering or a related field, advanced engineering degree preferred

5 years of experience in piping analysis within nuclear or other regulated industries

Direct experience performing ASME Section III Class 1, 2, and 3 piping analysis

Experience with additional piping codes such as ASME B31.1 or similar

Proficiency with AutoPIPE

Experience working in SmartPlant or Smart3D environments

Strong communication and collaboration skills

Ability to work effectively in a cross-functional team environment

Eligibility to work under 10 CFR Part 810

Familiarity with U.S. NRC regulations related to nuclear design and construction preferred

Working knowledge of pipe support design and integration with stress analysis

Experience with additional tools such as GT STRUDL, PV Elite, or ANSYS

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📌 Piping Engineer - Nuclear Systems (SMR) (Madrid)
🏢 Holtec
📍 Madrid