Oak Ridge National Laboratory · 6 hours ago
Nuclear Mechanical Engineer
Tennessee (TN)
Full-time
Onsite
Senior Level
5+ years expOak Ridge National Laboratory is seeking a Nuclear Mechanical Engineer to join their Systems Engineering Group within the Research Reactors Division. The role involves performing design engineering, supporting manufacturing and fabrication of reactor core components, and providing systems engineering support for operations and maintenance.
Advanced MaterialsClean EnergyEnergyEnergy ManagementManufacturingNuclearRenewable Energy
Responsibilities
Support engineering design work for new and upgraded HFIR structures, systems, and components
Implements modifications in accordance with RRD configuration control processes
Perform calculations, apply relevant codes and standards, and help develop design and material specifications
Assist with fabrication, assembly, and implementation of approved design changes
Maintain accurate drawings, system documentation, and as-built records
Help troubleshoot equipment issues and prepare clear work instructions for maintenance activities
Provide field technical support and contribute to preventive and predictive maintenance planning
Support operability assessments and review equipment performance data to identify trends or vulnerabilities
Participate in system walk-downs, evaluate system health, and help identify spare-parts and planning needs
Deliver ORNL’s mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote equal opportunity by fostering a respectful workplace – in how we treat one another, work together, and measure success
Qualification
Required
A BS degree in mechanical engineering or related field, and at least 5 years of related experience
Preferred
At least 7 years of related engineering experience
Experience supporting engineering, maintenance, or project tasks in a technical environment
Ability to read mechanical drawings and apply basic GD&T concepts
Experience with ASME piping codes and process piping system design
Experience troubleshooting mechanical or HVAC systems
Understanding of machining and fabrication practices, including welding/joining techniques, combined with a sound understanding of machine design
Exposure to regulated, safety-focused environments (DOE, NRC, or similar)
Benefits
Medical and retirement plans
Flexible work hours
On-site fitness
Banking
Cafeteria facilities
Prescription Drug Plan
Dental Plan
Vision Plan
401(k) Retirement Plan
Contributory Pension Plan
Life Insurance
Disability Benefits
Generous Vacation and Holidays
Parental Leave
Legal Insurance with Identity Theft Protection
Employee Assistance Plan
Flexible Spending Accounts
Health Savings Accounts
Wellness Programs
Educational Assistance
Employee Discounts
Relocation Assistance
Company
Oak Ridge National Laboratory
Oak Ridge National Laboratory holds a range of R&D assignments, from fundamental nuclear physics to applied R&D on advanced energy systems.
5001-10000 employees
H1B Sponsorship
Oak Ridge National Laboratory has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (268)
2024 (276)
2023 (223)
2022 (228)
2021 (192)
2020 (152)
Funding
Current Stage
Late StageTotal Funding
$9.8MKey Investors
US Department of Energy
2023-09-21Grant· $4.8M
2023-07-27Grant
2022-03-14Grant· $5M
Leadership Team
Arjun Shankar
Division Director, National Center for Computational Sciences, Oak Ridge National Laboratory
Brett Ellis
Division Director - Research Computing Support
Recent News
2026-01-17
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