System One is seeking a highly experienced Nuclear Engineer V – Mechanical to support major commercial nuclear plant projects in Ohio. This role is ideal for a senior mechanical engineer with deep PWR/BWR plant knowledge, strong design modification experience, and a proven ability to improve plant safety, reliability, and performance.

Key Responsibilities
Apply advanced mechanical engineering expertise in the design, operation, and modification of PWR and/or BWR nuclear plant systems, including both primary and secondary side equipment
Perform engineering calculations, feasibility studies, and technical evaluations to resolve equipment reliability concerns and improve overall plant performance
Develop, review, and implement system modifications/upgrades that enhance plant safety, reliability, and operational efficiency
Use independent engineering judgment to prepare and defend modification packages during quality, safety, and design review boards
Interface directly with project teams, plant stakeholders, and equipment vendors to assess conditions and drive practical engineering solutions
Ensure all engineering activities remain compliant with NRC regulations, nuclear industry codes, and applicable standards
Review and check calculations, drawings, engineering packages, and technical data prepared by other engineers
Prepare technical presentations, communicate findings clearly to clients, and participate in client review meetings
Conduct plant walkdowns and field inspections in industrial environments, including ladders, confined spaces, and security-controlled areas

Required Qualifications
B.S. in Mechanical Engineering from an ABET-accredited program
15+ years of engineering experience
8+ years of direct commercial nuclear power plant experience
Strong background in PWR and/or BWR design and plant operations
Nuclear plant unescorted access requirements