Oak Ridge National Laboratory · 5 hours ago
Senior Nuclear Mechanical Engineer
Oak Ridge, TN
Full-time
Onsite
Senior Level, Lead/Staff
8+ years expOak Ridge National Laboratory is seeking a Senior Nuclear Mechanical Engineer to join their Systems Engineering Group within the Research Reactors Division. The role involves leading engineering design efforts for reactor components and providing technical support for operations and maintenance.
Advanced MaterialsClean EnergyEnergyEnergy ManagementManufacturingNuclearRenewable Energy
No H1B
U.S. Citizen Only
Responsibilities
Lead and independently execute engineering design efforts for new and upgraded HFIR structures, systems, and components
Implements modifications in accordance with RRD configuration control processes
Perform and validate complex calculations; apply codes and standards; develop detailed design and material specifications
Provide technical oversight for fabrication, assembly, and implementation of approved design changes
Ensure technical accuracy and approve drawings, system documentation, and as-built records
Lead troubleshooting efforts and develop technically sound work instructions for maintenance activities
Provide field technical support and contribute to preventive and lead preventive and predictive maintenance planning efforts
Lead operability assessments and evaluate performance data to identify trends, vulnerabilities, and risks
Conduct 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 8 years of related experience
Experience with ASME piping codes and process piping system design
Experience diagnosing mechanical equipment problems and developing formal work package instructions for performance and documentation of repairs
A strong understanding of reading and interpreting mechanical design drawings
Preferred
Experience supporting engineering, maintenance, or project tasks in a technical environment
Ability to read mechanical drawings and apply basic GD&T concepts
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
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
2026-01-22
2026-01-17
2026-01-17
Company data provided by crunchbase