158 jobs found in Oak Ridge, TN

Requisition Id 17182 Overview: We are seeking a Nuclear Criticality Safety Program Lead who will focus on being the chief programmatic and technical authority for Oak Ridge National Laboratory's Nuclear Criticality Safety Group. This position resides in the Nuclear Criticality Safety Group\ in the Nuclear Facility Safety Division, of the Environment Safety Health & Quality Directorate at Oak Ridge National Laboratory (ORNL). Major Duties/Responsibilities: Reports to the NFSD Director. Serves and the chief programmatic and technical lead for the ORNL NCS Program. Provides recommendations to management regarding Nuclear Criticality Safety issues. Supports the NFSD Director in developing strategic and tactical policies that affect the production and maintenance of safety envelopes for all ORNL nuclear facilities. Provides technical mentoring to all NCS Program Staff. Delivers ORNL's mission by aligning behaviors, priorities, and interactions with our core values...

Requisition Id 16933 Level: TP04 Overview: The Design Engineering Group in the Nonreactor Nuclear Facility Division (NNFD) is hiring a Mechanical Design Engineer for its Mechanical Design Team. The engineer will work with project teams, discipline leads, and stakeholders to design and analyze mechanical systems for nuclear and radiological facilities. Projects include hot cells, gloveboxes, shielded carriers, lift fixtures, pressure vessels, process piping, confinement ventilation systems, and various tools for isotope research & production. Major Duties/Responsibilities: Define and record design requirements, connections, assumptions, and standards for each project. Check existing conditions through reviewing records, site visits, measurements, and inspections. Create calculations, analyses, specifications, and complete design documents; use a graded approach and clearly document decisions. Work with other engineers, designers, and stakeholders to coordinate...

Requisition Id 17309 Overview: We are seeking a postdoctoral researcher to develop and demonstrate quantum algorithms for quantum simulations of condensed matter physics. The goal of this research is to enable new capabilities in the large scale simulation and quantification of materials properties using quantum computers. Specific research focuses may include scaling quantum simulations using partially fault-tolerant methods, simulations of topological materials, and developing approaches to measure thermodynamic material properties using quantum computers. The position will involve collaboration with a multidisciplinary team of researchers in quantum computing and condensed matter physics theory and experiment. The ideal candidate will have a strong background in quantum computing, computational physics, quantum thermodynamics, and/or a solid understanding of condensed matter quantum many-body theory. They will Interpret, report, and present research concepts and results in...

Requisition Id 17301 An active TS, Q, or TS/SCI clearance is required for consideration. Overview: The Field Intelligence Operations Division in the National Security Sciences Directorate at the Oak Ridge National Laboratory is seeking qualified applicants for an experienced DevSecOps Engineer/Architect to design, implement, automate, and sustain secure software and infrastructure delivery capabilities supporting classified national security missions. This position will help establish modern DevSecOps practices within highly controlled computing environments where security, configuration management, traceability, reliability, and mission availability are essential. The successful candidate will work across software development, infrastructure engineering, HPC, cybersecurity, Information Assurance, and mission teams to develop secure and repeatable methods for building, testing, deploying, configuring, and sustaining systems and applications. Unlike traditional DevOps...

Requisition Id 17131 Overview: Oak Ridge National Laboratory is the largest US Department of Energy science and energy laboratory, conducting basic and applied research to deliver transformative solutions to compelling problems in energy and security. We are seeking a Postdoctoral Research Associate who will support the Science Engagement Section in the National Center for Computational Sciences (NCCS), Computing and Computational Sciences Directorate (CCSD) at Oak Ridge National Laboratory (ORNL) to perform leading-edge computational materials research and development. The scientific focus of this role is the study of the chemical and physical properties of molten salt liquids relevant to fission and fusion reactors. The production and recovery of tritium fuel are major challenges for successfully generating fusion energy. This research will focus on the chemical speciation and transport of tritium in the molten salt blankets using ab initio quantum simulations, machine...

Requisition Id 17299 An active TS, Q, or TS/SCI clearance is required for consideration. Overview: The Field Intelligence Operations Division in the National Security Sciences Directorate at the Oak Ridge National Laboratory is seeking qualified applicants for an experienced High Performance Computing (HPC) Architect to design, integrate, and evolve advanced computing capabilities supporting classified national security missions. This position serves as a senior technical authority for HPC architecture and will help translate mission and scientific computing requirements into secure, scalable, resilient, and high-performing computing environments. The HPC Architect will work across compute, storage, networking, cybersecurity, facilities, applications, and data center infrastructure to develop integrated solutions capable of supporting demanding computational workloads in classified environments. The successful candidate will combine deep HPC technical expertise with...

Requisition Id 17289 Overview: This position provides full-time structural engineering and analytical support to the US ITER Project Office through the Final Design of the Ion Cyclotron Heating (ICH) system, Electron Cyclotron Heating (ECH) system, Vacuum Systems (VAS), and other systems as required. In addition to core structural analysis responsibilities, the role may include the opportunity to serve as a Technical Approver, leading or supporting the procurement of structural supports and associated hardware, from technical requirements definition through vendor oversight and Title III execution. Major Duties/Responsibilities: Work with technical managers, engineers, designers, and fabrication vendors to design and analyze supports and equipment hardware associated with the US ITER Project Office. Perform, develop, and modify complex structural support analyses involving carbon steel, stainless steel, and other materials in accordance with US and/or European code...

Requisition Id 17304 Overview: The Biological Systems Design Group in the Biosciences Division at Oak Ridge National Laboratory (ORNL) is seeking a Postdoctoral Researcher with expertise in fungal systems and genetics. The successful candidate will be part of the Synthetic Biology section (https://www.ornl.gov/group/synthetic-biology) and will contribute to a Laboratory Directed Research and Development (LDRD) project focused on developing bio-enabled approaches for critical mineral accessibility and recovery. In this position, you will investigate the genetic and molecular mechanisms underlying fungal interactions with lithium-bearing minerals and other critical-material systems. Research will emphasize genetically tractable non-model fungal organisms, including the development and application of genome engineering approaches to identify and functionally characterize genes and pathways associated with mineral interactions, stress tolerance, elemental partitioning, and...

Requisition Id 17242 Overview: We are seeking an operations support professional to meet expanding needs for operational excellence to accomplish the ORNL cutting-edge scientific research mission. This position will work as part of an integrated ESH&Q team that has responsibility for assuring safe operations of a DOE neutron-scattering user-facility. Additionally, this position will provide operational support to research staff to maintain compliance with all applicable Federal and State laws, DOE Orders, and ORNL policies and procedures regarding work control, space utilization, and facility operations management. This position resides in the Integrated Research Operations Support group in the Work Management Division and will be matrixed to support the Neutron Sciences Directorate at Oak Ridge National Laboratory (ORNL). Major Duties/Responsibilities: Serve as a Division work control point-of-contact (POC) for research safety summaries (RSS)/Work Planner for...

Requisition Id 17310 Overview: Oak Ridge National Laboratory (ORNL) is the largest US Department of Energy (DOE) science and energy laboratory, conducting basic and applied research to deliver transformative solutions to compelling problems in energy and security. Within ORNL, the Building Envelope Materials Research (BEMR) Group conducts research on materials, thermal management, infrastructure resilience, and technologies that improve the reliability and performance of energy systems to meet DOE's energy affordability and resiliency goals. We are seeking a Postdoctoral Research Associate to conduct research on the resilience of U.S. natural gas infrastructure during extreme cold-weather events. The successful candidate will investigate the causes and consequences of weather-related natural gas supply disruptions, develop modeling and analytical approaches to evaluate system vulnerabilities, and assess technologies and operational strategies that can improve infrastructure...

Requisition Id 17266 Overview: We are seeking a Visual Storyteller who will produce high-quality still imagery and provide selective video support to document and communicate Oak Ridge National Laboratory's research, people, facilities, and mission impact. This position resides in the Photography Group in the Digital & Visual Communications Directorateat Oak Ridge National Laboratory (ORNL). This role operates in a high-compliance environment where safety, security, export controls, intellectual property, and public release review processes shape what can be captured, stored, and published. The successful candidate will combine creative craft with scientific accuracy and sound judgment, delivering compelling imagery while building a durable visual archive that serves the institution over time. Major Duties/Responsibilities: Produce a wide range of still imagery, including environmental portraits, editorial and documentary coverage, events, executive and VIP protocol,...

Requisition Id 17288 Overview: Oak Ridge National Laboratory (ORNL) is the largest US Department of Energy (DOE) science and energy laboratory, conducting basic and applied research to deliver transformative solutions to compelling problems in energy and security. Within ORNL, the Building Envelope Materials Research (BEMR) Group conducts research on materials, thermal management, infrastructure resilience, and technologies that improve the reliability and performance of energy systems to meet DOE's energy affordability and resiliency goals. We are seeking an R&D Assistant to study the resilience of U.S. natural gas infrastructure during extreme cold-weather events. The successful candidate will investigate the causes and consequences of weather-related natural gas supply disruptions, develop analytical approaches to evaluate system vulnerabilities, and assess technologies and operational strategies that can improve infrastructure resilience. Major...

Requisition Id 16577 Overview: 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. We are seeking a full-time Research and Development Associate specializing in Verification Technologies to lead the development of cutting-edge safeguards verification technologies for international nuclear safeguards. This role will also lead technical analyses related to nuclear nonproliferation, particularly in advanced reactor domains. This position resides...

Requisition Id 16569 Overview: The Grid Transients & Advanced Modeling Group in the Electrification and Energy Infrastructure Division (EEID) within the Energy Science and Technology Directorate (ESTD) at Oak Ridge National Laboratory (ORNL) is seeking a Postdoctoral Research Associate to perform R&D in the areas of electromagnetic transient (EMT) simulation and software development as well as dynamic and transient inverter modeling and different applications of the simulation. Selection will be based on qualifications, relevant experience, skills, and education. You should be highly self-motivated and independent in conducting research under general guidance and are expected to prepare manuscripts for scientific publication and present the work to sponsors and at conferences. The group supports the energy reliability and prosperity mission of the Energy Department (DOE) through transformative science and technology solutions, including research supporting the Office...

Requisition Id 16512 Overview: We are seeking a Chief Safety Basis Engineer who will primarily focus on safety basis quality and adequacy for all nuclear facilities at Oak Ridge National Laboratory (ORNL). The Chief Safety Basis Engineer is the senior nuclear safety engineer within ORNL's Nuclear Facility Safety Division (NFSD). Nuclear Facilities Safety Division resides in the Environment Safety Health & Quality (ESH&Q) Directorate at ORNL. As part of our team, you will be given the opportunity to grow in leadership while contributing to the team environment to accomplish the tasks needed to support safe and efficient operations of the HFIR reactor and non-reactor nuclear facilities across the ORNL compass. The successful candidate must be a leader with the ability to communicate with various levels of management and engineering disciplines, build team cohesion, and one who values diversity of opinion, education, and experiences. Major Duties/Responsibilities:...

Requisition Id 16549 Overview: We are hiring a HPC Software Engineer to design, operate and maintain clusters, servers, and workstations supporting services where science happens at ORNL! This position resides in the Emerging Technologies & Computing group in the Research Computing Division in the Information Technology Services Directorate at Oak Ridge National Laboratory (ORNL). The Emerging Technology Computational Group facilitates ORNL goals through HPC systems engineering, integration, and support for the research community at ORNL. By providing design, deployment, optimization, monitoring, and tooling support across multiple clustered infrastructures, we facilitate Lab-wide R&D projects. Our HPC clusters range in scope from just a handful of nodes to over fifty-thousand cores. We partner with ORNL research organizations to enable research excellence and delivery. We work with other clustered computing and HPC groups to help research programs identify the best...

Requisition Id 16413 Overview: The Analytics and AI methods at Scale (AAIMS) group in the National Center for Computational Science (NCCS) is hiring Senior Research Scientist to push the frontier of AI for science such as: scientific reasoning, federated & collaborative learning, and reinforcement learning (RL) for self-improving models on leadership-class supercomputers. You'll help design, train, and evaluate AI systems that plan, reason, and take actions to accelerate discovery across domains (materials, chemistry, climate, fusion, biology, and more). NCCS operates the Frontier exascale supercomputer and world-class data facilities. This role sits at the intersection of AI at scale and HPC, giving you unmatched resources to prototype new ideas, run large ablations, and translate methods into scientific impact. Examples of Focus Areas: Agentic AI for Science: Autonomous and tool-using agents for experiment design, simulation steering, data collection, and...

Requisition Id 16630 Overview: The Field Intelligence Element (FIE) invites candidates to apply for a Contractor SAP Security Officer (CSSO) who will support the Special Security Office, leading on-site execution of program security requirements for assigned Special Access Program (SAP) program(s), to include designing and successfully conducting a security program which ensures compliance with regulatory guidance in the Field Intelligence Operations Division, National Security Sciences Directorate at Oak Ridge National Laboratory (ORNL). This position develops, implements, interprets, and applies existing various U.S. Government regulations, Intelligence Community and DOE regulations and directives, while maintaining active engagement supporting other team's assigned portfolio of programs. Department of War (DoW) SAP experience preferred. Major Duties/Responsibilities: The CSSO is responsible for: planning and supervising classified information systems, controlled...

Requisition Id 16570 Overview: The Grid Transients & Advanced Modeling Group in the Electrification and Energy Infrastructure Division (EEID) within the Energy Science and Technology Directorate (ESTD) at Oak Ridge National Laboratory (ORNL) is seeking a Research Associate to perform R&D in the one or more of the following areas: development of EMT simulation software, bulk power systems electromagnetic transient (EMT) simulations, high-fidelity dynamic and transient power electronics resources modeling, explore different intelligence algorithms to enhance ease of usage of simulations, and different applications of EMT simulations. Selection will be based on qualifications, relevant experience, skills, and education. You should be highly self-motivated and independent in conducting research under general guidance and are expected to prepare manuscripts for scientific publication and present the work to sponsors and at conferences. The group supports the energy...

Requisition Id 16261 Overview: We are seeking a Postdoctoral Research Associate who will focus on the physics and materials science of PLD-synthesized twisted oxide and hybrid quantum materials. This position resides in the Neutron & X-Ray Scattering, & Thermophysics group in the Materials Analysis and Interface Science Section, Materials Science and Technology Division, Physical Sciences Directorate at Oak Ridge National Laboratory (ORNL). As part of our research team, you will work in a highly collaborative environment with a broad spectrum of expertise, including epitaxial synthesis, twisted membrane fabrication, quantum transport, neutron/x-ray scattering, and spectroscopy. You will perform cutting-edge research on correlated quantum heterostructures, including epitaxial synthesis by pulsed laser deposition, characterization, analyzing data, and writing papers. Major Duties/Responsibilities: Conduct epitaxial synthesis of complex-oxide thin films and...