... Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL). Major Duties ... Experience with computational methods including steady-state modeling, dynamic simulation ...

60 Oak Ridge National Laboratory Computational Scientist Jobs Hiring Near You
... Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL). Major Duties ... Experience with computational methods including steady-state modeling, dynamic simulation ...
HPC Linux Systems Engineer
Oak Ridge, TN · On-site
$110 - $160/hr
The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts ... The laboratory offers many employee benefits, including medical and retirement plans and flexible ...
HPC Linux Systems Engineer
Oak Ridge, TN · On-site
$110 - $160/hr
The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts ... The laboratory offers many employee benefits, including medical and retirement plans and flexible ...
Research Associate - Advanced Machining and Machine Tool Research Group
Oak Ridge, TN · On-site
$85 - $120/hr
... Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory ... methods, and computational tools. * Contribute to externally sponsored research proposals ...
Research Associate - Advanced Machining and Machine Tool Research Group
Oak Ridge, TN · On-site
$85 - $120/hr
... Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory ... methods, and computational tools. * Contribute to externally sponsored research proposals ...
$110 - $160/hr
The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts ... The laboratory offers many employee benefits, including medical and retirement plans and flexible ...
$110 - $160/hr
The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts ... The laboratory offers many employee benefits, including medical and retirement plans and flexible ...
HPC Linux Systems Engineer
Oak Ridge, TN · On-site
The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts ... The laboratory offers many employee benefits, including medical and retirement plans and flexible ...
HPC Linux Systems Engineer
Oak Ridge, TN · On-site
The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts ... The laboratory offers many employee benefits, including medical and retirement plans and flexible ...
... Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory ... methods, and computational tools. * Contribute to externally sponsored research proposals ...
... Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory ... methods, and computational tools. * Contribute to externally sponsored research proposals ...
... Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory ... methods, and computational tools. * Contribute to externally sponsored research proposals ...
... Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory ... methods, and computational tools. * Contribute to externally sponsored research proposals ...
Company Description Oak Ridge National Laboratory is the US Department of Energy's largest multi-program science and energy laboratory, with scientific and technical capabilities spanning the ...
Company Description Oak Ridge National Laboratory is the US Department of Energy's largest multi-program science and energy laboratory, with scientific and technical capabilities spanning the ...
Senior I&C Systems Engineer - Nuclear Facility
Oak Ridge, TN · On-site
$70 - $100/hr
Oak Ridge National Laboratory is looking for an Instrumentation and Controls System Engineer to design, develop, and maintain various instrumentation and control systems vital for operational ...
Senior I&C Systems Engineer - Nuclear Facility
Oak Ridge, TN · On-site
$70 - $100/hr
Oak Ridge National Laboratory is looking for an Instrumentation and Controls System Engineer to design, develop, and maintain various instrumentation and control systems vital for operational ...
Oak Ridge National Laboratory (ORNL) invites applications for a Research Associate position to ... The successful candidate will demonstrate expertise in scientific research related to ceramics and ...
Oak Ridge National Laboratory (ORNL) invites applications for a Research Associate position to ... The successful candidate will demonstrate expertise in scientific research related to ceramics and ...
Oak Ridge National Laboratory (ORNL) invites applications for a Research Associate position to ... The successful candidate will demonstrate expertise in scientific research related to ceramics and ...
Oak Ridge National Laboratory (ORNL) invites applications for a Research Associate position to ... The successful candidate will demonstrate expertise in scientific research related to ceramics and ...
Power Systems Researcher
Oak Ridge, TN · On-site
Company Description Oak Ridge National Laboratory is the US Department of Energy's largest multi-program science and energy laboratory, with scientific and technical capabilities spanning the ...
Power Systems Researcher
Oak Ridge, TN · On-site
Company Description Oak Ridge National Laboratory is the US Department of Energy's largest multi-program science and energy laboratory, with scientific and technical capabilities spanning the ...
... Sciences Directorate (PSD) at Oak Ridge National Laboratory (ORNL), under the mentorship of Dr ... chemical separations, computational chemistry, and nuclear chemistry. Our cold labs house ...
... Sciences Directorate (PSD) at Oak Ridge National Laboratory (ORNL), under the mentorship of Dr ... chemical separations, computational chemistry, and nuclear chemistry. Our cold labs house ...
The Computational Coupled Physics (CCP) Group within the Computational Sciences and Engineering Division (CSED), at Oak Ridge National Laboratory (ORNL) is seeking an R&D Associate to support ...
The Computational Coupled Physics (CCP) Group within the Computational Sciences and Engineering Division (CSED), at Oak Ridge National Laboratory (ORNL) is seeking an R&D Associate to support ...
R&D Associate - Data Center Thermal Management
Oak Ridge, TN · On-site
$51K - $51K/yr
... Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL). Major Duties/Responsibilities: * Designing, developing, and conducting experiments related to data center thermal ...
R&D Associate - Data Center Thermal Management
Oak Ridge, TN · On-site
$51K - $51K/yr
... Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL). Major Duties/Responsibilities: * Designing, developing, and conducting experiments related to data center thermal ...
The Computational Coupled Physics (CCP) Group within the Computational Sciences and Engineering Division (CSED), at Oak Ridge National Laboratory (ORNL) is seeking an R&D Associate to support ...
The Computational Coupled Physics (CCP) Group within the Computational Sciences and Engineering Division (CSED), at Oak Ridge National Laboratory (ORNL) is seeking an R&D Associate to support ...
... Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL). Major Duties/Responsibilities: * Designing, developing, and conducting experiments related to data center thermal ...
... Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL). Major Duties/Responsibilities: * Designing, developing, and conducting experiments related to data center thermal ...
This position resides within the Quantum Computational Science Group in the Computational Sciences and Engineering Division (CSED) at Oak Ridge National Laboratory (ORNL). CSED performs ...
This position resides within the Quantum Computational Science Group in the Computational Sciences and Engineering Division (CSED) at Oak Ridge National Laboratory (ORNL). CSED performs ...
This position resides within the Quantum Computational Science Group in the Computational Sciences and Engineering Division (CSED) at Oak Ridge National Laboratory (ORNL). CSED performs ...
This position resides within the Quantum Computational Science Group in the Computational Sciences and Engineering Division (CSED) at Oak Ridge National Laboratory (ORNL). CSED performs ...
Postdoc Associate - Synthesis and (Radio)Chemical Separations
Oak Ridge, TN · On-site
$23.25 - $30.50/hr
... Sciences Directorate (PSD) at Oak Ridge National Laboratory (ORNL), under the mentorship of Dr ... chemical separations, computational chemistry, and nuclear chemistry. Our cold labs house ...
Postdoc Associate - Synthesis and (Radio)Chemical Separations
Oak Ridge, TN · On-site
$23.25 - $30.50/hr
... Sciences Directorate (PSD) at Oak Ridge National Laboratory (ORNL), under the mentorship of Dr ... chemical separations, computational chemistry, and nuclear chemistry. Our cold labs house ...
Oak Ridge National Laboratory Jobs Information
What is it like to work at Oak Ridge National Laboratory?
As a national laboratory, ORNL is structured into various research divisions and departments, with a diverse range of projects and initiatives focused on advancing science, technology, and engineering, including energy, climate change, and national security. The laboratory's work environment is highly collaborative, with opportunities for interdisciplinary research and knowledge sharing among scientists, engineers, and technicians.
Working at ORNL may appeal to individuals who are passionate about advancing scientific knowledge and addressing complex global challenges, as the laboratory offers a unique opportunity to contribute to cutting-edge research and development projects, collaborate with leading experts in their fields, and make a meaningful impact on society.
What makes Oak Ridge National Laboratory an attractive place to work?
Do workers at Oak Ridge National Laboratory get paid breaks?
69% of people say they get paid breaks.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and May 2026.
Does Oak Ridge National Laboratory pay people when they’re sick?
94% of people say they would get paid if they were sick but scheduled to work.
Based on data from 16 people who took the Breakroom Quiz between December 2024 and May 2026.
At Oak Ridge National Laboratory, are sick days and vacation days separate paid time off?
43% of people say they have to use vacation days when they’re out sick.
Based on data from 7 people who took the Breakroom Quiz between June 2025 and May 2026.
Is the health insurance from Oak Ridge National Laboratory affordable enough for their workers?
100% of people say the health insurance costs are okay
Based on data from 10 people who took the Breakroom Quiz between March 2025 and May 2026.
Do people get paid time off at Oak Ridge National Laboratory?
100% of people say they get paid time off.
Based on data from 7 people who took the Breakroom Quiz between June 2025 and May 2026.
Do workers at Oak Ridge National Laboratory worry about hours?
93% of people report they don’t worry about getting enough hours.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and May 2026.
Do Oak Ridge National Laboratory workers get to choose the shifts they work?
44% report that they don’t have enough control over which shifts they work.
Based on data from 9 people who took the Breakroom Quiz between December 2024 and May 2026.
How easy is it for Oak Ridge National Laboratory workers to change shifts?
67% of people report that it’s easy to change shifts if they need to.
Based on data from 9 people who took the Breakroom Quiz between January 2025 and May 2026.
How easy is it to get time off at Oak Ridge National Laboratory?
87% of people report it’s easy to get time off.
Based on data from 15 people who took the Breakroom Quiz between December 2024 and May 2026.
Do Oak Ridge National Laboratory managers change schedules at the last minute?
100% of people say their manager doesn’t change their shift schedule at the last minute.
Based on data from 15 people who took the Breakroom Quiz between December 2024 and May 2026.
Do jobs at Oak Ridge National Laboratory spill into time workers aren’t paid for?
13% of people report that their job takes up time that they don’t get paid for.
Based on data from 15 people who took the Breakroom Quiz between December 2024 and May 2026.
How easy is it to take sick days at Oak Ridge National Laboratory?
81% of people report that it’s easy to take time off if they are sick.
Based on data from 16 people who took the Breakroom Quiz between December 2024 and May 2026.
Is working at Oak Ridge National Laboratory good if you’re a parent or caregiver?
80% of people who care for a child or other relative report this is a good place to work.
Based on data from 5 people who took the Breakroom Quiz between January 2025 and May 2026.
Do people at Oak Ridge National Laboratory feel treated with respect by their managers?
79% of people say they’re treated with respect by their managers.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and May 2026.
Do people at Oak Ridge National Laboratory get to take their breaks without interruption?
73% of people report that they get to take their breaks without interruption.
Based on data from 15 people who took the Breakroom Quiz between December 2024 and May 2026.
Is it stressful to work at Oak Ridge National Laboratory?
69% of people say they often feel stressed at work.
Based on data from 16 people who took the Breakroom Quiz between December 2024 and May 2026.
Do people at Oak Ridge National Laboratory enjoy their jobs?
87% of people report they enjoy their job.
Based on data from 15 people who took the Breakroom Quiz between December 2024 and May 2026.
Do people at Oak Ridge National Laboratory recommend working with their team?
75% of people report that they would recommend working with their immediate team to a friend.
Based on data from 16 people who took the Breakroom Quiz between December 2024 and May 2026.
Do people get enough training when they start at Oak Ridge National Laboratory?
73% of people report they got enough training when they started working here.
Based on data from 15 people who took the Breakroom Quiz between December 2024 and May 2026.
Do people get support to advance at Oak Ridge National Laboratory?
In the last year, 79% of people report being given support to advance their career here.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and May 2026.
Do people think Oak Ridge National Laboratory’s headquarters understands what’s happening where they work?
79% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and May 2026.
Do workers feel well informed about how Oak Ridge National Laboratory is doing?
79% of people feel that they are kept well informed about how the company is doing as a whole.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and May 2026.
What other companies are hiring for Computational Scientist jobs?
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Postdoctoral Research Associate - Multifunctional Equipment Integration
Oak Ridge, TN • On-site
Full-time
Medical, Dental, Vision, Life, Retirement, PTO
Re-posted 22 days ago
Oak Ridge National Laboratory rating
8.8
Based on 16 frontline employees who took The Breakroom Quiz
14th of 120 rated laboratories
Job description
Overview:
We are seeking a Postdoctoral Researcher who will focus on conducting, coordinating, and reporting complex research assignments related to advanced thermal and energy system technologies. This position resides in the Multifunctional Equipment Integration Group in the Thermal System Science Research Section, Buildings and Transportation Science Division, Energy Science and Technology Directorate, at Oak Ridge National Laboratory (ORNL).
Major Duties/Responsibilities:
- The successful candidate will be responsible for conducting, coordinating, and reporting complex research assignments related to advanced thermal and energy system technologies, including:
- Conduct experimental and analytical research to evaluate advanced thermal and energy technologies, including energy-efficient building systems, thermal-fluid processes, industrial heating applications, data center thermal management, and other emerging energy technologies.
- Develop and operate experimental facilities, instrumentation, and data acquisition systems; conduct laboratory and field testing; and perform thermodynamic analysis, system modeling, and performance assessments.
- Analyze and interpret experimental and modeling results, identify technical challenges, develop solutions, and provide recommendations for system improvement.
- Prepare technical reports, peer-reviewed publications, presentations, and project deliverables for sponsors and stakeholders.
- Collaborate with multidisciplinary teams and engage with researchers, engineers, and stakeholders from universities, national laboratories, government agencies, and private industry.
- 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.
Basic Qualifications:
- A PhD in mechanical engineering, electrical engineering, or a related discipline obtained in the last five years.
- A minimum of 3 years of experience in (a) design and operation of experimental thermal/fluid systems, (b) mechanical systems and instrumentation, (c) fluid dynamics, combustion, and heat transfer.
Preferred Qualifications:
- Experience with building energy modeling and simulation tools such as EnergyPlus, or similar platforms for energy simulation and analysis, including model development, calibration, and application.
- Experience with computational methods including steady-state modeling, dynamic simulation, computational fluid dynamics (CFD) to support system design and performance optimization.
- Experience in data center thermal management technologies, including air cooling, liquid cooling, direct-to-chip cooling, immersion cooling, two-phase cooling, waste heat recovery, thermal energy storage, or cooling system optimization.
- Innovative thinking and problem solving.
- A proven publication record.
- Experience with heating, ventilation, and air-conditioning (HVAC) equipment is also a plus.
- Excellent written and oral communication skills.
- Motivated self-starter with the ability to work independently and to participate creatively in collaborative teams across the laboratory.
- Ability to function well in a fast-paced research environment, set priorities to accomplish multiple tasks within deadlines, and adapt to ever changing needs.
Special Requirements:
Applicants cannot have received their Ph.D. more than five years prior to the date of application and must complete all degree requirements before starting their appointment. The appointment length will be up to 24 months with the potential for extension. Initial appointments and extensions are subject to performance and availability of funding.
Three references are required. Please submit three letters of reference when applying to this position. You may upload these directly to your application or send them to Postdocrecruitment@ornl.gov with the position title and number referenced in the subject line.
Instructions to upload documents to your candidate profile:
- Login to your account via jobs.ornl.gov
- View Profile
- Under the My Documents section, select Add a Document
For employment at Oak Ridge National Laboratory (ORNL), a Real ID compliant form of identification will be required. Additionally, ORNL is subject to Department of Energy (DOE) access restrictions. All employees must also be able to obtain and maintain a federal Personal Identity Verification (PIV) card as mandated by Homeland Security Presidential Directive 12 (HSPD-12) and Department of Energy (DOE) Order 473.1A, which requires a favorable post-employment background investigation.
To obtain this credential, new employees must successfully complete and pass a Federal Tier 1 background check investigation. This investigation includes a declaration of illegal drug activities, including use, supply, possession, or manufacture within the last year. This includes marijuana and cannabis derivatives, which are still considered illegal under federal law, regardless of state laws.
For foreign national candidates:
If you have not resided in the U.S. for three consecutive years, you are not eligible for the PIV credential and instead will need to obtain a favorable Local Site Specific Only (LSSO) risk determination to maintain employment. Once you meet the three-year residency requirement, you will be required to obtain a PIV credential to maintain employment.
About ORNL:
As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation's most pressing challenges. Our team is made up of over 7,000 dedicated and innovative individuals! Our goal is to create an environment where a variety of perspectives and backgrounds are valued, ensuring ORNL is known as a top choice for employment. These principles are essential for supporting our broader mission to drive scientific breakthroughs and translate them into solutions for energy, environmental, and security challenges facing the nation.
ORNL offers competitive pay and benefits programs to attract and retain individuals who demonstrate exceptional work behaviors. The laboratory provides a range of employee benefits, including medical and retirement plans and flexible work hours, to support the well-being of you and your family. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also available for added convenience.
Other benefits include the following: 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, Relocation Assistance, and Employee Discounts.
This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.
We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.
If you have trouble applying for a position, please email ORNLRecruiting@ornl.gov.
ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer.
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About Oak Ridge National Laboratory
Sourced by ZipRecruiter
Industry
Scientific research and development services
Company size
5,001 - 10,000 Employees
Headquarters location
Oak Ridge, TN, US
Year founded
1943