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Position Summary: As a Cost Estimator in Tetra Tech's Disaster Recovery Cadre, you will support FEMA Public Assistance and other disaster recovery programs by developing accurate, defensible, and well-documented cost estimates for infrastructure restoration, emergency work, and permanent work projects. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is a leading provider of consulting, engineering, and technical services worldwide. Our reputation rests on the technical expertise and dedication of our employees—16,000 people working together across disciplines and time zones to provide smart, sustainable solutions for challenging projects. We are proud to be home to leading technical experts in water, environment, infrastructure, resource management, energy, and international development. Tetra Tech combines the resources of a global, multibillion dollar company with local, client-focused delivery in 400 locations around the world. We offer competitive compensation and benefits and are searching for innovative people to join our teams.

Tetra Tech Inc

Cost Estimator

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Akima Infrastructure Services, LLC (AIS), is actively seeking Engineering, Professional, Technical, and administrative support personnel as part of our staff augmentation team supporting the Department of Energy at the Y‑12 National Security Complex located in Oak Ridge, Tennessee and the Pantex Plant located in Amarillo, Texas. Successful candidates will be employees of AIS, a premier government contractor charged with employing highly motivated and well-qualified personnel who can advance Y-12's core mission to ensure a safe, secure, and reliable U.S. nuclear deterrent, which is essential to national security.

NANA Regional Corporation Inc

System Engineer, Level III

Subcontractor will provide technical integration, leadership, guidance, and direction to other multi-disciplined engineering teams as requested for high profile plant initiatives and will appropriately apply ASME Nuclear Quality Assurance (NQA-1) requirements for work in nuclear facilities; plan and direct the engineering activities on projects; establish detailed project design scope, budgets, and schedules; professionally coordinate engineering efforts with Production, Maintenance, Project Management, Construction, Startup, and Project Controls personnel; and review project engineering progress against approved schedules and take corrective action when required. Akima Infrastructure Services, LLC (AIS), is actively seeking Engineering, Professional, Technical, and administrative support personnel as part of our staff augmentation team supporting the Department of Energy at the Y‑12 National Security Complex located in Oak Ridge, Tennessee and the Pantex Plant located in Amarillo, Texas.

Project Engineer, Level III

BWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid ("Agreement"). A U.S.-based company, BWXT is a Fortune 1000 and Defense News Top 100 manufacturing and engineering innovator that provides safe and effective nuclear solutions for global security, clean energy, environmental restoration, nuclear medicine and space exploration.

YEAR

At BWX Technologies, Inc. (NYSE: BWXT), we are People Strong, Innovation Driven. Headquartered in Lynchburg, Virginia, BWXT is a Fortune 1000 and Defense News Top 100 manufacturing and engineering innovator that provides safe and effective nuclear solutions for global security, clean energy, environmental restoration, nuclear medicine and space exploration. With approximately 6,700 employees, BWXT has 14 major operating sites in the U.S., Canada and the U.K. We are the sole manufacturer of naval nuclear reactors for U.S. submarines and aircraft carriers. Our company supplies precision manufactured components, services and fuel for the commercial nuclear power industry across four continents. Our joint ventures provide environmental restoration and nuclear operations management at more than a dozen U.S. Department of Energy and NASA facilities. BWXT’s technology is driving advances in medical radioisotope production in North America and microreactors for various defense and space applications. Follow us on Twitter at @BWXT and learn more at <a href="http://www.bwxt.com">www.bwxt.com</a>.

BWX Technologies Inc

Manufacturing Engineer

BWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid ("Agreement"). The engineer leads development of high‑speed LabVIEW data acquisition and control systems, ensures synchronized communication, data integrity, and reliability across multi‑platform control architectures, and provides engineering support for a diverse range of test operations, from small benchtop setups to large‑scale industrial qualification stands.

LabVIEW Systems Engineer

Instrumentation & Controls Engineer

Orano's activities in the U.S. include developing uranium enrichment facility in Oak Ridge, TN; packages and transportation of uranium & nuclear fuel assemblies; fabricating & installing used nuclear fuel dry storage canisters and casks, conducting pool-to-pad used nuclear fuel transfers; providing solutions to the National Labs and to the Dept of Energy; and supplying U.S. nuclear energy utilities with uranium, conversion, and enrichment services. The Nuclear Safety/ISA Engineer is responsible for the development and implementation of the Integrated Safety Analysis (ISA), including Items Relied On For Safety (IROFS), as well as oversight of the criticality, chemical process, fire safety strategies, and detailed design for nuclear safety to ensure compliance with the license documents.

Orano SA

Nuclear SafetyIntegrated Safety Analysis Engineer

Determine well-defined methods for collecting, compiling, and analyzing data from the physical work site, soil/water/sludge/rock samples, surveys, blueprints, GIS data, subsurface utility information, maps, hydrologic analysis, geotechnical data, and other matrices for project development, design, and construction. Proficiency with technical writing, office automation, discipline-specific design software (i.e., MicroStation, AutoCAD, Civil 3D, ArcGIS, InRoads, Geopak, GeoSlope, ANSYS, STADD, HEC-RAS, HEC-HMS), technology, math principles, predictive models, spreadsheets, and tools.

Senior Geotechnical Engineer

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Formed through the merger of Ironclad Environmental and Mersino Dewatering, the combined company operates a multi-branch network across Texas, Louisiana, California, the Upper Midwest, and other key industrial regions, delivering rental fleet, engineered water management, and liquid containment solutions to customers who depend on uptime, safety, and technical expertise. This role reviews project documentation, including geotechnical reports, boring logs, plans, civil drawings, and project specifications, and performs hydraulic, fluid, and chemical compatibility analyses to develop safe, effective, and cost-efficient solutions.

At Mersino, we work together with our customers to achieve the proper groundwater control services required for each project.
Mersino: 

<ul>
 <li>Is the only dewatering company with extensive experience in all methods of dewatering including deep well dewatering, wellpoint dewatering, trenched tile collection systems and sock dewatering as well as eductor well dewatering.</li>
 <li>Our nationwide equipment inventory includes a wide assortment of portable pumping equipment that allows us to provide the most cost effective and practical bypass pumping solutions available.</li>
 <li>Our one-pass trenching equipment allows us to install sock tile, trench collection systems, slurry cut-off walls and bio walls.</li>
 <li>Our power generation inventory ensures complete power system and backup power availability with generator rentals from 10 kW to 2000 kW, in addition to auxiliary power accessories.</li>
</ul>

Mersino Dewatering, Inc.

Engineer (3603)

RTL, C/C++, Python, VHDL, Verilog, Tcl, cryptography, hardware, embedded software, System Integration, Hardware Security, Xilinx, Simulation, IP core, Versal, Stratix, concept to deployment, Vivado, GHDL, Questa, Quartus Prime, Zynq, Agilex, AXI, ACE, Avalon, FPGA verification tools, reverse engineering, cocotb, pyuvm. FPGA Design and Development: Design and develop IP cores and FPGA configurations implementing the latest in leakage-resilient hardware cryptography algorithms using state-of-the-art FPGA hardware.

EndoSec

FPGA Engineer

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Support process calculations, such as flow rate, pressure drop, and line sizing, directly within the Mechanical Engineering group; Mesa does not have a separate Process Engineering function, so this work sits with Mechanical. Work closely with the Principal Mechanical Engineer (Piping & Pressure Systems), who will check your work, verify code compliance, and provide mentorship and support, though you'll own and execute your own design assignments day to day.

Mesa Associates

Mechanical Engineer

Bachelor's degree in mechanical engineering and 8+ years of relevant experience in mechanical or electromechanical equipment development, testing, deployment, or commissioning; or master's degree in mechanical engineering and 5+ years of relevant experience; or PhD in mechanical engineering and 3+ years of relevant experience; or an equivalent combination of education and experience may be considered. Working closely with engineering, operations, maintenance, assembly teams, and suppliers, the engineer will guide assigned technical activities at the assigned site and serve as a technical resource for fuel handling equipment development and testing.

Kairos Power LLC

Principal Mechanical Engineer, Fuel Handling Equipment

Note to staffing and direct hire agencies: In the event a recruiter or agency who is not on our preferred supplier list submits a resume/candidate to anyone in the company, AtkinsRéalis family of companies, we explicitly reserve the right to recruit and hire the candidate(s) at our discretion and without any financial obligation to the recruiter or agency. Neutronics, Shielding & Software Quality Assurance (SQA): Apply validated neutronics methodologies and Monte Carlo codes (e.g., MCNP, SCALE/KENO) to develop or assess margins to criticality, bias, and uncertainty.

AtkinsRealis

Intermediate Nuclear Engineer Energy - Remote

Perform conceptual and/or detailed design of nuclear instrumentation and control systems and modifications, including definition of system functional and performance requirements and control algorithms, definition of control logic and wiring arrangements, control parameters, setpoints, instrument ranges and environmental qualification and seismic qualification. Note to staffing and direct hire agencies: In the event a recruiter or agency who is not on our preferred supplier list submits a resume/candidate to anyone in the company, AtkinsRéalis family of companies, we explicitly reserve the right to recruit and hire the candidate(s) at our discretion and without any financial obligation to the recruiter or agency.

Senior I&C Engineer Energy - Remote

Nano Nuclear Energy is seeking a UF6 Deconversion / Oxide Production Process Engineer to develop and scale processes that convert uranium hexafluoride (UF6) into uranium oxide products for downstream fuel-cycle and fuel-manufacturing applications. This is a hands-on engineering opportunity to advance process chemistry, thermal treatment, powder-property control, and solids handling while working directly in laboratory and demonstration facilities.

Nano Nuclear Energy Inc

UF6 Deconversion / Oxide Production Process Engineer

HiringThing

If you’re an experienced fuel-performance or multiphysics engineer looking for greater technical ownership, this role offers the opportunity to directly influence the qualification, safety analysis, and licensing of an advanced High-Temperature Gas-Cooled Reactor (HTGR) fuel system. If you have deep experience in fuel performance, multiphysics, TRISO, or extreme-environment materials modeling and want your analysis to directly influence fuel qualification, irradiation testing, reactor safety, and licensing, Apply Today!

Fuel Performance Engineer

ADAPTED_NOW

Build and support cloud-based data solutions using AWS technologies, emphasizing reliable data processing, analytics, automation, and application performance. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.

Every day, System One focuses on services and solutions that require a high degree of specialization, in-demand technical skills, and large-scale operational expertise. We are essential partners to those on the front lines of our nation’s most critical infrastructure, technology, and life sciences initiatives. 
Founded more than 40 years ago as a staffing partner to the engineering industry, today System One is a diversified organization operating in over 50 locations and putting more than 9,000 people to work in the United States, Canada, and the United Kingdom.

System One

AWS Data Engineer

The Data Systems Engineer handles supporting the data layer behind internally developed business applications, maintaining enterprise databases, developing integrations, and contributing to the Microsoft Fabric analytics platform. The ideal candidate is equally comfortable troubleshooting production issues, optimizing SQL performance, building data pipelines, and collaborating with technical and business teams to deliver reliable enterprise solutions.

Malibu Boats Inc.

Data Systems Engineer

FULL_TIME

We have a variety of Employee Resource Groups, including CEC Community – focused on giving back to the communities in which we work; CEC Ignite – focused on helping professionals early in their careers to develop their pathway; CEC iDEA – focused on inclusion, diversity, equality, and acceptance; and CEC Women – focused on creating internal and external opportunities for women to network and leverage professional experience! Overview: As a Civil Engineering Project Manager for Civil & Environmental Consultants, Inc. (CEC) in our Civil Practice at the Knoxville, TN office, you’ll lead project teams responsible for land development and site design for a wide range of commercial, residential, institutional, and industrial projects.

Civil & Environmental Consultants, Inc.

Civil Engineer - Project Manager

[AW]-iCims

Active TS/SCI or DOE Q clearance ( Ability to meet applicable health and safety training, medical monitoring, drug screening, and background testing requirements) Ability and Willingness to work fully onsite in Oak Ridge, TN Preferred: Active DOE Q clearance. Support quality management system (QMS) improvements, mentor quality personnel, and independently manage deliverables within established schedules and budgets.

Applications Engineer Jobs in Oak Ridge, TN

Cost Estimator Tetra Tech Inc

System Engineer, Level III NANA Regional Corporation Inc

Project Engineer, Level III NANA Regional Corporation Inc

Manufacturing Engineer BWX Technologies Inc

LabVIEW Systems Engineer BWX Technologies Inc

Instrumentation & Controls Engineer BWX Technologies Inc

Nuclear SafetyIntegrated Safety Analysis Engineer Orano SA

Senior Geotechnical Engineer WSP

Engineer (3603) Mersino Dewatering, Inc.

FPGA Engineer EndoSec

Mechanical Engineer Mesa Associates

Principal Mechanical Engineer, Fuel Handling Equipment Kairos Power LLC

Intermediate Nuclear Engineer Energy - Remote AtkinsRealis

Senior I&C Engineer Energy - Remote AtkinsRealis

UF6 Deconversion / Oxide Production Process Engineer Nano Nuclear Energy Inc

Fuel Performance Engineer Nano Nuclear Energy Inc

AWS Data Engineer System One

Data Systems Engineer Malibu Boats Inc.

Civil Engineer - Project Manager Civil & Environmental Consultants, Inc.

Quality Engineer Zp Group Llc

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