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Major Duties/Responsibilities: Provide systems-level engineering support on piping specification, material selection, heat exchanger thermal sizing, and pump selection, translating decisions into clear direction for designers and technicians. Overview: We are seeking a Cooling Systems Engineer to provide technical engineering oversight of cooling systems supporting the Spallation Neutron Source (SNS) and High Flux Isotope Reactor (HFIR).

Oak Ridge National Laboratory

Cooling Systems Engineer

Experience with Power BI, Dataverse, SharePoint JSON, Microsoft Graph, REST APIs, PowerShell, Azure integration, Power Platform ALM, Git/GitLab, Python, JavaScript/modern web technologies, or similar tools. Demonstrated ability to independently translate business and functional requirements provided by process owners and SMEs into secure, integrated, maintainable production solutions with limited technical oversight and without detailed how-to direction.

Senior Microsoft 365 Solutions Engineer (Hybrid)

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Overview: We are seeking a Design Engineer who will focus on designing, deploying, and improving instruments for the neutron science community at ORNL's High Flux Isotope Reactor (HFIR) and the Spallation Neutron Source (SNS). You will work with other engineers in the directorate and the instrument teams consisting of instrument scientists, scientific associates, operations and maintenance technicians, and other technical personnel in the execution of instrument projects.

Design Engineer - Instruments

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You will contribute to the development of CGI''s AI Platform, building intelligent solutions that integrate backend services, APIs, large language models (LLMs), data pipelines, and intuitive frontend experiences to solve real-world business challenges. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information.

CGI Inc

Jr.-Level Full-Stack AI Engineer

As a Power Electronics Engineer at the Spallation Neutron Source (SNS), you will support the operation, maintenance, repair, and upgrades of high-voltage systems, including Converter Modulators, Magnet Power Supplies, Beam Kickers, and Choppers. Overview: Oak Ridge National Laboratory (ORNL) is the largest US Department of Energy science and energy laboratory, conducting basic and applied research to deliver ground-breaking solutions to compelling problems in energy and security.

Power Electronics Engineer

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. 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.

Structural Engineer - US ITER Project

The Grid Systems Hardware (GSH) Group at ORNL is seeking a highly motivated Power Electronics and Grid Hardware Research Engineer/Associate to support research and development of next-generation grid-integrated hardware systems. The successful candidate will contribute to the development of innovative power electronic systems and controls, support system integration and experimental validation, and work closely with multidisciplinary teams across ORNL, industry, utilities, and DOE programs.

Grid-Integrated Power Electronics Research Engineer (Temporary)

However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information. This is a great opportunity for an experienced data engineer who enjoys hands on development work, thrives in Agile teams, and wants to apply Palantir Foundry expertise to meaningful, high impact projects in the financial services space.

Senior Data Engineer

Major Duties/Responsibilities: Support modeling facility power systems using SKM and conduct the necessary analysis which includes short circuit analysis, protective device coordination, equipment evaluation, arc flash and shock hazard analysis. Overview: We are seeking a Reliability Engineer who will focus on developing, implementing, and improving a reliability and asset management program for predictive operations for the systems within the Facilities and Operations (F&O) Directorate.

Reliability Engineer - Electrical

Major Duties/Responsibilities: The role comprises the following primary focus: Take technical ownership of user reported problems and provide hands-on support for scientific applications and libraries and users of high-performance computing, artificial intelligence, and other advanced computing resources. Overview: The Organization: The National Center for Computational Sciences (NCCS) provides pioneering computational infrastructure for technical and scientific professionals to accelerate scientific discovery and engineering advances across a broad range of subject areas.

HPC Engineer, System Acceptance And User Environment

Basic Qualifications: A BS degree in engineering related field with at least 12 years of progressive engineering experience in complex, high-consequence environments (e.g., accelerator facilities, nuclear, research laboratories, or comparable industrial systems), including multi-discipline design and integration. Coordinate with the Proton Power Upgrade (PPU) and Second Target Station (STS) projects as a customer and future operator to ensure project deliverables meet NScD operational requirements (liaison role-no line authority over STS).

Chief Engineer, Neutron Sciences Directorate

Overview: We are seeking a Mechanical Design Engineer who will lead mechanical engineering design for Spallation Neutron Source (SNS) systems, with emphasis on remote handling, post-irradiation examination (PIE) support, activated component handling, and spent component disposal support. This position resides in the Target Engineering Group in the Target Development, Engineering & Operations Section, Neutron Technologies Division, Neutron Sciences Directorate at Oak Ridge National Laboratory (ORNL).

Senior Mechanical Design Engineer

The successful candidate will work closely with clients, test engineers, functional testers, and the test lead to understand business requirements, design and present automated testing solutions for SAP S/4HANA, and participate in the full software development lifecycle of an SAP greenfield implementation. This role requires a broad understanding of SAP Federal Financial accounting processes and solutions, as well as experience with automated testing tools such as Tricentis ECT, UiPath, or similar technologies, to establish a CI/CD pipeline for regression testing during initial deployment and future enhancements.

YEAR

SAP S/4HANA Test Engineer - U.S. Citizenship Required

Structural Engineer - US Iter Project

FULL_TIME

Prepare and review engineering deliverables including P&IDs, specifications, calculations (e.g., pipe stress, hydraulic, safety valve sizing, ventilation sizing), and equipment arrangements. The ideal candidate will have experience in facility design (piping, plumbing, HVAC, or utilities) and/or mechanical system design (pumps, skids, hydraulics, or pneumatics).

MS Technology, Inc.

Mechanical Engineer (P.E.)

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Founded in 1994 as a nuclear engineering firm to support federal operations in East Tennessee, GEM has since expanded into a nationwide, multi-disciplinary provider with over 270 employees and a diverse portfolio of contracts in the environmental, nuclear, and defense sectors. GEM Technologies, Inc. (GEM) is an award-winning federal contractor with more than 30 years of experience providing environmental, construction, facility management, and technical services to federal agencies, state and local governments, and commercial organizations.

GEM Technologies

P&ID Drafter / Designer / Engineer

Mechanical Design Engineer

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Individuals are expected to demonstrate technical expertise in one craft area (Electrical, HVAC, Piping/Plumbing, Central Utility Plant Operations) and be multi-skilled in others in order to successfully complete daily/weekly work assignments. Whether you've got deep experience in commercial real estate, skilled trades or technology, or you're looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.

Jones Lang LaSalle Inc

Building Engineer

Ongoing projects span protocol development, embedded systems technologies, and software-defined radio platforms integrated with high‑performance computer systems, offering a wide range of research opportunities and supporting a diverse set of sponsors. Overview: The Resilient Communications Group, within the National Security Sciences Directorate, at ORNL, is looking for new team members to be a part of our challenging and exciting projects in the area of secure/robust communications research.

Communications Engineer

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The Lead Technical Developer designs, develops, tests, deploys, and maintains scalable software applications and APIs that support business operations, user-facing solutions, and AI-enabled capabilities. The Lead Technical Developer works closely with product managers, architects, data and AI teams, and other stakeholders to build applications that create measurable business value and support emerging technology initiatives.

Security Engineer Jobs in Oak Ridge, TN

Cooling Systems Engineer Oak Ridge National Laboratory

Senior Microsoft 365 Solutions Engineer (Hybrid) Oak Ridge National Laboratory

Design Engineer - Instruments Oak Ridge National Laboratory

Jr.-Level Full-Stack AI Engineer CGI Inc

Power Electronics Engineer Oak Ridge National Laboratory

Structural Engineer - US ITER Project Oak Ridge National Laboratory

Grid-Integrated Power Electronics Research Engineer (Temporary) Oak Ridge National Laboratory

Senior Data Engineer CGI Inc

Reliability Engineer - Electrical Oak Ridge National Laboratory

HPC Engineer, System Acceptance And User Environment Oak Ridge National Laboratory

Chief Engineer, Neutron Sciences Directorate Oak Ridge National Laboratory

Senior Mechanical Design Engineer Oak Ridge National Laboratory

SAP S/4HANA Test Engineer - U.S. Citizenship Required CGI Inc

Structural Engineer - US Iter Project Oak Ridge National Laboratory

Mechanical Engineer (P.E.) MS Technology, Inc.

P&ID Drafter / Designer / Engineer GEM Technologies

Mechanical Design Engineer GEM Technologies

Building Engineer Jones Lang LaSalle Inc

Communications Engineer Oak Ridge National Laboratory

Full Stack Software Engineer American Bureau of Shipping (ABS)

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