Perm/Remote Mechanical Engineer 5 (NSSS Piping & Integration)

September 17, 2026

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Title: Perm/Remote Mechanical Engineer 5 (NSSS Piping & Integration)

This position is available for full-time remote work within the contiguous Unites States with travel to Seine Client physical offices as needed. Travel estimate: 25%

Preference is for candidates available to work from our Corvallis, OR office location.

Job Description

* Must have excellent communication skills.

* This is a Perm/Full Time Employee position to include healthcare benefits, 401K and such.

This position is available for full-time remote work within the contiguous Unites States with travel to Seine Client physical offices as needed.

Preference is for candidates available to work from our Corvallis, OR office location.

* If not in Corvallis, OR candidates must be willing to travel 25% ( with all travel costs approved under the Seine Client Travel Policy being approved in advance). The approved travel costs will be reimbursed by Seine Client.

Pay and Benefits:

The target pay range for this position is $152,520 - $184,076 annually.

The full pay range is $136,742 – $213,878 annually ( including value of 401K or bonus'' and such )

At Seine Client, compensation decisions are determined using factors such as relevant job-related skills, full-time working experience, education and training, equity within the department.

POSITION SUMMARY:

Reporting to the Manager, NSSS Piping and Integration, this position performs design and analysis of the Nuclear Steam Supply System (NSSS) pipe systems in accordance with ASME BPVC Section III and applicable regulatory requirements.

This position is part of the NSSS design engineering organization that generates technical requirements and associated design parameters for the modular advanced light water reactor (ALWR) NSSS.

Utilizing proven state-of-the-art methodologies NSSS components are engineered to nuclear industry standards.

All work within the NSSS design organization is completed under ASME NQA-1 quality assurance requirements and respective U.S. Nuclear Regulatory Commission guidelines.

ESSENTIAL DUTIES AND RESPONSIBILITIES:

Possesses excellent knowledge in functional discipline and its practical application and has detailed knowledge of applicable industry codes, standards and regulations

Performs complex piping design and stress analysis of ASME BPVC Section III Class 1, 2, and 3 piping systems using the Bentley AutoPIPE computer program in accordance with the requirements of NB, NC, ND-3600, respectively.

Performs piping design and stress analysis of ASME BPVC Section III Class 1, 2, and 3 piping components using the ANSYS computer program in accordance with the requirements of NB-3200.

Performs pipe support design and stress analysis of ASME BPVC Section III NF supports using hand calculations or ANSYS computer program.

Performs static and dynamic analysis including response spectrum and time history analysis to calculate stresses due to deadweight, thermal expansion, thermal gradients, seismic events, and fluid transients.

Prepare and review engineering specifications, drawings, CAD models, and other documentation that communicate the design and technical aspects of piping components associated with NSSS systems. The development of Drawings and CAD models is based on collaboration with drafters and requires the engineer to reviews models that have been developed in Siemens NX.

Leads the evaluation of design solutions (piping re-route, reconfigurations of supports, etc) which satisfy piping stress criteria.

Works on complex tasks in multiple and diverse areas.

Interprets scope and project requirements.

Acquires, maintains and develops training qualifications.

Performs other duties as assigned.

Provides oversight and mentoring to early career engineers in the area of piping stress analysis and/or pipe support analysis.

Certifies design specification for ASME BPVC Section III Piping and/or Piping Supports

MINIMUM SKILLS, QUALIFICATIONS AND ABILITIES:

Education/Certification:

A minimum of a B.S. degree in Engineering, preferably Nuclear or Mechanical Engineering, from a four year ABET accredited college or university is required.

Advanced degree is preferred.

PE License in Mechanical or Nuclear Engineering is required.

Certifying Engineer experience to ASME BPVC Section III is required.

Experience:

Minimum of 15 years of highly relevant, full-time engineering experience is required.

Experience with the qualification of piping systems including ball joints is desirable.

Subject Matter Expertise in one or more of the following areas:

Engineering design and piping stress engineering analysis in the nuclear industry.

Bentley AutoPIPE or other comparable pipe analysis code.

ASME Section III Class 1, 2, and 3 piping systems (NB/NC/ND-3600) and/or piping supports (NF).

Industry Requirements: Eligible to work under Department of Energy 10 CFR Part 810

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