Senior Level Nuclear Engineer Jobs
Senior level nuclear engineer jobs place experienced engineers in charge of reactor design decisions, safety analysis programs, and the technical teams or cross-functional projects that carry those outcomes forward. Roles are concentrated primarily on-site and in hybrid settings across Energy, Consulting & Professional Services, and Technology & Software, with employers like Sargent & Lundy, ENTRUST Solutions, and Fluor hiring at this level now.
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Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the Mechanical Analysis Engineering group. You will work on major systems, equipment and plant process in the following areas:
- Develop and lead licensing basis system and component evaluations for nuclear power uprate projects.
- This position will offer you the ability to directly apply your knowledge of thermodynamics, heat transfer, fluid mechanics, and experience in power plant engineering.
- Perform consulting level work for power uprates in the nuclear industry.
- Prepare and review calculations related to heat balances, power train pumps, heat exchangers, condenser/heat sink, and plant hazards to support client recommendations and reviews.
- Prepare task reports and equipment evaluations that present technical information in a clear and concise manner to meet client requirements.
- Perform equipment sizing, optimization evaluation, and selection in response to client needs to support the proposed power uprate.
- Interface with clients and project teams to present technical discussions and project status.
- Develop engineering proposals and cost estimates.
- Lead and mentor junior engineering staff on power plant engineering technical tasks.
- Perform independent reviews of work performed by others including calculations and drawing preparation.
- Attend client meetings and site walkdowns to validate scope and ensure client satisfaction.
Essential skills and experience:
- This position requires a BSME from an ABET Engineering Accreditation Commission-approved program with a strong academic background and interest in thermodynamics, heat transfer, and fluid mechanics.
- 10 or more years of experience in the nuclear power industry.
- Experience with nuclear power uprates and/or turbine retrofit projects.
- Experience and practical knowledge in one or more of the following areas:
- Balance of plant system and component evaluations
- Pinch point assessments and/or task reports
- Heat balance
- Power train pumps, heat exchangers, condenser/heat sink
- Circulating Water and Ultimate Heat Sinks
- All assignments require the preparation of calculations and/or reports, and excellent technical report writing skills are essential.
- Knowledge of the practical application of mechanical engineering and technology including applying systems, principles, techniques, procedures, and equipment to a project design.
- Strong interest in numerical computations and problem solving.
- Working knowledge of codes, standards, and regulations that apply to mechanical engineering design of nuclear power plants.
- Proficiency with MS Office applications.
- Excellent written and verbal communication skills.
Valued but not required skills and experience:
- MSME from an ABET accredited program with a strong academic background
- PE License
- You are expected to lead others in taking engineering problems from issue to solution by setting expectations for using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs.
- Leaders in these roles often direct automation and process-improvement work, for example, how teams automate calculations, summarize technical documents, or generate design documentation and guiding when and how AI or agentic AI tools are used while ensuring results are checked.
- Overseeing engineers who program or script (e.g., Python, MATLAB, advanced Excel) to automate engineering tasks, with review of automated outputs, is valued but not required.
- We also value additional learning, such as a minor, certificate, or other experience in Computer Science, Artificial Intelligence, Software Engineering, or related fields that enables effective oversight of automation and agentic AI-enabled engineering workflows.
At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.
Health & Wellness
- Health Plans: Medical, Dental, Vision
- Life & Accident Insurance
- Disability Coverage
- Employee Assistance Program (EAP)
- Back-Up Daycare
- FSA & HSA
- 401(k)
- Pre-Tax Commuter Account
- Merit Scholarship Program
- Employee Discount Program
- Corporate Charitable Giving Program
- Tuition Assistance
- First Professional Licensure Bonus
- Employee Referral Bonus
- Paid Annual Personal/Sick Time (PST)
- Paid Vacation
- Paid Holidays
- Paid Parental Leave
- Paid Bereavement Leave
- Flexible Work Arrangements
Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the Mechanical Analysis Engineering group. You will work on major systems, equipment and plant process in the following areas:
- Develop and lead licensing basis system and component evaluations for nuclear power uprate projects.
- This position will offer you the ability to directly apply your knowledge of thermodynamics, heat transfer, fluid mechanics, and experience in power plant engineering.
- Perform consulting level work for power uprates in the nuclear industry.
- Prepare and review calculations related to heat balances, power train pumps, heat exchangers, condenser/heat sink, and plant hazards to support client recommendations and reviews.
- Prepare task reports and equipment evaluations that present technical information in a clear and concise manner to meet client requirements.
- Perform equipment sizing, optimization evaluation, and selection in response to client needs to support the proposed power uprate.
- Interface with clients and project teams to present technical discussions and project status.
- Develop engineering proposals and cost estimates.
- Lead and mentor junior engineering staff on power plant engineering technical tasks.
- Perform independent reviews of work performed by others including calculations and drawing preparation.
- Attend client meetings and site walkdowns to validate scope and ensure client satisfaction.
Essential skills and experience:
- This position requires a BSME from an ABET Engineering Accreditation Commission-approved program with a strong academic background and interest in thermodynamics, heat transfer, and fluid mechanics.
- 10 or more years of experience in the nuclear power industry.
- Experience with nuclear power uprates and/or turbine retrofit projects.
- Experience and practical knowledge in one or more of the following areas:
- Balance of plant system and component evaluations
- Pinch point assessments and/or task reports
- Heat balance
- Power train pumps, heat exchangers, condenser/heat sink
- Circulating Water and Ultimate Heat Sinks
- All assignments require the preparation of calculations and/or reports, and excellent technical report writing skills are essential.
- Knowledge of the practical application of mechanical engineering and technology including applying systems, principles, techniques, procedures, and equipment to a project design.
- Strong interest in numerical computations and problem solving.
- Working knowledge of codes, standards, and regulations that apply to mechanical engineering design of nuclear power plants.
- Proficiency with MS Office applications.
- Excellent written and verbal communication skills.
Valued but not required skills and experience:
- MSME from an ABET accredited program with a strong academic background
- PE License
- You are expected to lead others in taking engineering problems from issue to solution by setting expectations for using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs.
- Leaders in these roles often direct automation and process-improvement work, for example, how teams automate calculations, summarize technical documents, or generate design documentation and guiding when and how AI or agentic AI tools are used while ensuring results are checked.
- Overseeing engineers who program or script (e.g., Python, MATLAB, advanced Excel) to automate engineering tasks, with review of automated outputs, is valued but not required.
- We also value additional learning, such as a minor, certificate, or other experience in Computer Science, Artificial Intelligence, Software Engineering, or related fields that enables effective oversight of automation and agentic AI-enabled engineering workflows.
At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.
Health & Wellness
- Health Plans: Medical, Dental, Vision
- Life & Accident Insurance
- Disability Coverage
- Employee Assistance Program (EAP)
- Back-Up Daycare
- FSA & HSA
- 401(k)
- Pre-Tax Commuter Account
- Merit Scholarship Program
- Employee Discount Program
- Corporate Charitable Giving Program
- Tuition Assistance
- First Professional Licensure Bonus
- Employee Referral Bonus
- Paid Annual Personal/Sick Time (PST)
- Paid Vacation
- Paid Holidays
- Paid Parental Leave
- Paid Bereavement Leave
- Flexible Work Arrangements
See All 115+ Senior Level Nuclear Engineer Jobs
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Find JobsSenior Level Nuclear Engineer Job Market
Who's Hiring
- Sargent & Lundy34
- ENTRUST Solutions14
- Fluor7
- Los Alamos National Laboratory7
- Black & Veatch5
Top Industries Hiring
- Energy49
- Consulting & Professional Services49
- Technology & Software12
- Cybersecurity11
- Construction & Real Estate8
Senior Level Nuclear Engineer Jobs: Frequently Asked Questions
How do I get a senior level nuclear engineer job?
Employers at this level expect demonstrated ownership of complex projects, such as reactor safety analyses, fuel cycle evaluations, or regulatory licensing campaigns. Candidates who stand out combine deep technical specialization in a recognized area, like thermal hydraulics or radiation shielding, with a record of leading engineers or influencing cross-functional decisions. Professional credentials such as a PE license or relevant certifications meaningfully strengthen a senior-level application.
Which companies hire senior level nuclear engineers?
Companies hiring senior level nuclear engineers right now include Sargent & Lundy, ENTRUST Solutions, and Fluor, based on current listings on Migrate Mate as of July 2026. Hiring at this level comes primarily from utilities operating commercial reactors, federal contractors supporting defense and research programs, and engineering firms managing plant upgrades or new-build projects.
Are there remote senior level nuclear engineer jobs?
Yes, though full remote is less common at this level given regulatory and site-specific demands. About 48% of senior level nuclear engineer openings are remote or hybrid as of July 2026, with hybrid arrangements most frequently offered in roles focused on analysis, design review, or regulatory documentation rather than hands-on plant work.
What makes a nuclear engineer role senior level?
Senior nuclear engineer roles carry a distinct scope that separates them from mid-level positions. Expectations shift from executing assigned tasks to owning technical outcomes, such as defining the methodology for a safety analysis, serving as the technical lead on a licensing submission, or mentoring junior engineers through complex problem-solving. Senior roles also typically involve direct engagement with regulators, clients, or executive stakeholders on high-consequence decisions.
Which industries hire the most senior level nuclear engineers?
Senior level nuclear engineer roles concentrate in Energy, Consulting & Professional Services, and Technology & Software, based on current listings on Migrate Mate as of July 2026. These sectors drive hiring at this level because they operate complex nuclear systems, hold long-term regulatory obligations, or are advancing next-generation reactor programs that require seasoned technical leadership.