6 junior process engineer jobs found in Oak Ridge, TN

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at www.x-energy.com/contact-us. Job Description Lead Complex Nuclear Facility Construction TRISO-X is a first-of-its-kind nuclear fuel fabrication facility which will be manufacturing TRISO coated-particle fuel. The Construction Project Engineer III is a technical leader responsible for executing the full lifecycle of nuclear facility construction projects-translating design intent into built reality while ensuring safety, quality, and regulatory compliance at every stage. This role will bridge the gap between Electrical / I&C design and physical construction,...

Requisition Id 16860 Overview: We are seeking a versatile and innovative Senior Mechanical Engineer to join the High Pressure Sample Environment Group within the Sample Environment and Labs Section, Neutron Scattering Division at Oak Ridge National Laboratory (ORNL). In this role, you will be a key driver in achieving our vision: "to be the global leader in high-pressure neutron science support through our commitment to providing an unparalleled user experience while enabling complex experiments with the highest standards of safety and reliability." You will lead the design, analysis, and implementation of cutting-edge pressure vessels and specialized equipment used at the Spallation Neutron Source (SNS) and the High Flux Isotope Reactor (HFIR). You will bridge the gap between scientific requirements and physical reality, ensuring our systems are engineered for peak performance and absolute safety. Major Duties/Responsibilities: Guided by group and division goals,...

Requisition Id 16713A Overview: We are seeking a temporary Technical Professional Staff Member to support the design, integration, testing, and verification of advanced additive manufacturing systems and components. This position resides in the Manufacturing Systems Design Group in the Manufacturing Science Division at Oak Ridge National Laboratory (ORNL). As part of our research team, you will support the development of practical mechanical designs, robotic system components, sensor integrations, fixtures, test methods, and documentation needed to advance MDF hybrid and additive manufacturing capabilities for government and industrial users. Major Duties/Responsibilities: Support research and development projects involving additive manufacturing systems, robotic manufacturing hardware, hybrid manufacturing platforms, and related mechanical subsystems. Create and revise mechanical CAD models, assemblies, drawings, bills of materials, and supporting design documentation...

Early Career Mechanical Engineer Description: As an Early Career Mechanical Engineer you will support the design and analysis of building mechanical systems for industrial and government facilities. This role involves assisting senior engineers and project managers with HVAC, ductwork, piping, and plumbing system design, engineering calculations, drawing development, and construction support. The successful candidate will collaborate with multidisciplinary design teams to deliver fully coordinated, high-quality design packages, while adhering to Amentum's engineering procedures and quality standards. Key Responsibilities: Assist senior engineers with the design of HVAC, plumbing, and piping systems, including B31.3 process piping Perform basic engineering calculations under direct supervision, such as: Heating and cooling load calculations Pipe and duct sizing Equipment selection support Create and revise engineering drawings using AutoCAD, MicroStation, Revit,...

Summary: We are actively seeking a Senior Mechanical Engineer with an active DOE Q or DoD TS clearance and experience working with parametric 3D modeling tools such as CREO or SolidWorks. This role will support scopes of work associated with components, assemblies, and machines within the project, providing technical expertise to help achieve program goals and objectives while ensuring compliance with established standards and practices. Responsibilities: Assist in leading, designing, building, and troubleshooting the following Plant expansion activities Large scale heating and cooling systems High vacuum systems Filtration systems Helium leak detection equipment Composite parts and assemblies Machined parts and assemblies Assist in design and analysis of structural and dynamic systems Design manufacturing equipment as needed for manufacturing activities Develop specifications for fabrication materials and equipment Assist in the creation, review, and...

We're looking for a driven, hands-on Manufacturing Engineer to join our high-spec aerospace and defense manufacturing operation. We don't run a "plug-and-play" shop. We build large, complex CNC machined components and fabricated assemblies that go into mission-critical aerospace, defense, and energy systems-where precision and execution matter. This role is intentionally open-ended. You will sit at the center of production, owning how work actually gets done-from process development and machining strategy to real-time problem solving on the shop floor. This is not a support role. This is a build-it, improve-it, own-it role. If you see inefficiencies, you fix them. If you see better ways to run parts, you implement them. If something breaks in production, you step in and solve it. For the right person, this is an opportunity to gain full visibility into manufacturing operations and grow quickly into senior engineering or operational leadership. Compensation $70,000...