Site Design Engineering Mechanical Engineer

TerraPower LLC.•Kemmerer, WY
•$108,600 - $141,039•Onsite

About The Position

TerraPower is a nuclear technology company focused on developing advanced nuclear energy and medical isotope innovations. They are seeking motivated professionals for advanced nuclear reactor research and development. TerraPower is committed to raising global living standards through safer, more affordable, and environmentally friendly nuclear energy. The company originated with a vision to address the critical need for energy access and has since been a leader in new nuclear technologies and related scientific advancements. This specific role is for a Site Design Engineering Mechanical Engineer who will be part of the mechanical engineering design team for the Natrium Demonstration Project, an advanced sodium-cooled fast reactor plant under construction. The position is crucial for ensuring engineering support aligns with construction, testing, startup, and turnover activities, while maintaining compliance with design, licensing, nuclear safety, and project requirements. The role is based onsite in Kemmerer, Wyoming, and reports to the Site Design Engineering Manager.

Requirements

  • Bachelor's degree (or higher) in Mechanical Engineering from an accredited institution.
  • 4+ years of engineering experience in design, construction support, or field engineering, preferably on large-scale EPC projects.
  • Ability to obtain and maintain site access and any required security clearances for work at a nuclear construction site.
  • Candidates must meet the minimum education and experience criteria applicable to the role, including relevant nuclear industry experience where required.

Nice To Haves

  • Advanced degree and/or professional engineering registration (PE) preferred.
  • Nuclear experience preferred.
  • Experience interfacing with construction, procurement, quality, licensing, and regulatory entities to resolve complex onsite technical issues while maintaining schedule and safety priorities is desired.
  • Understanding of nuclear design and licensing basis requirements, configuration management, and quality assurance programs in regulated nuclear environments desired (e.g., 10 CFR 50, 10 CFR 52, NRC guidance).
  • Excellent leadership, communication, and conflict-resolution skills, with being part of high-performing teams in high-stakes environments.
  • Familiarization with codes used in nuclear construction desired. For instance, NQA-1, ASME Section III, VIII, B31.1, B31.3, ACI-349, 318, AISC N690, 360, IEEE 603.
  • This position is subject to qualification requirements in accordance with ANSI/ANS 3.1.

Responsibilities

  • Perform design follow and oversight of mechanical/systems/piping activities in direct support of construction, testing, system startup, commissioning, and turnover to operations.
  • Provide technical review, approval, and issuance of drawing and design deliverables to ensure they conform to the approved design basis, licensing commitments, and regulatory requirements.
  • Serve as key onsite engineering interface for mechanical/systems/piping issues with stakeholders including construction management, field engineering, licensing, quality assurance, the utility owner/operator, procurement, suppliers, and external regulators (e.g., NRC).
  • Resolve technical and engineering issues arising in the field efficiently and collaboratively.
  • Disposition design changes, nonconformances, and requests for information for all TerraPower division of responsibility deliverables for the Natrium Demo project.
  • Manage priority conflicts when competing demands emerge across engineering tasks, partnering with other team leads to resolve issues at the working level and escalating unresolved or high-impact conflicts to senior leadership.
  • Support Project Controls, Field Engineering, Construction, and Home Office to prioritize work activities in support of the construction schedule.
  • Ensure all work processes, technical outputs, and deliverables adhere to contract requirements, TerraPower project standards, industry standards, and nuclear regulatory expectations for quality, configuration management, and design control.

Benefits

  • Competitive Compensation
  • Salary, eligible to participate in discretionary short-term incentive payments
  • Comprehensive Medical and Wellness Benefits
  • Medical
  • Vision
  • Dental
  • Life and Disability
  • Gender Affirmation Benefits
  • Parental Leave
  • 401k Plan
  • Generous Paid Time Off (PTO)
  • 21 days of annually accrued PTO
  • Generous Holiday Schedule
  • 10 paid holidays
  • Relocation Assistance
  • Professional and Educational Support Opportunities
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service