Mechanical Engineer

geosyntec· Mechanical Engineer
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📍 Oak Ridge, TN, USFULL TIME

About this role

Overview

Longenecker & Associates (L&A), a Geosyntec Company, is a trusted partner enabling critical missions across the U.S. Department of Energy (DOE) complex for more than 30 years. We contribute to DOE’s nuclear security and environmental remediation enterprise by providing the highest-caliber staff and experts. We are seeking a motivated Mechanical Engineer to contribute to our mission supporting our work at Centrus Energy in Oak Ridge, TN.  

 

Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service.

 

We invest in our people.  Each employee is unique, and your career at Geosyntec will be too.  We offer competitive pay and benefits, and well-being programs to support you and your family.

 

To Learn More Visit: http://www.geosyntec.com/careers/.

Essential Duties and Responsibilities

Reporting directly to the Engineering Manager, the Sr. Mechanical Engineer will be responsible for supporting scopes of work activities associated with components, assemblies, and machines in the Centrifuge Project. Provides support to the Centrifuge Program to accomplish goals and objectives while ensuring compliance to Centrus standards and practices.

  • Assist in leading, designing, building, and troubleshooting the following;
    • Plant expansion activities;
    • Large scale heating and cooling systems;
    • High vacuum 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 approval of engineering packages to be used for fabrication;
  • Establish procedures for assembly and repair of fabricated components;
  • Drive process improvement activities for internal activities and external suppliers;
  • Manage multiple priorities and ensure that deliverables are met within schedule and budget;
  • Adheres to company policies and procedures with regards to safety, code of conduct, security, and environmental program requirements; and
  • Contribute to cross functional teams including design, engineering, manufacturing, operations, testing, quality and purchasing.

Education and Licensure

  • Bachelor’s Degree in Mechanical or Aerospace Engineering required.
  • Advanced degree in Mechanical or Aerospace Engineering preferred.

Skills, Experience and Qualifications

  • At least 3 years of working experience in a Nuclear and/or DOE environment; or equivalent combination of education and experience required.
  • 3+ years of CAD experience.
  • SolidWorks experience.
  • CREO experience.
  • FEA experience.
  • Due to federal contract security requirements, this position requires U.S. Citizenship.
  • Due to federal contract security requirements, candidates must be able to successfully pass a federal background investigation to secure and maintain DOE Q security clearance.
  • Successful candidates will be able to perform the essential functions of the job with or without reasonable accommodation. This job posting reflects management’s assignment of essential functions and the descriptions listed do not restrict management’s right to assign or reassign duties and responsibilities to this job at any time.                                                   
  • Health & Safety training, medical monitoring, and client-driven drug and background testing. (required)

Please note that marijuana remains a Schedule III controlled substance under Federal Law. Federal contractors must follow Federal drug-free workplace rules, which prohibit marijuana use, even if medical or recreational use is permitted under State Law. 

 

PREFERRED QUALIFICATIONS & LOCATION DETAILS:

  • Active Q Clearance.
  • Project Management experience.
  • Experience with Centrifuge or HALEU projects.
  • Work will be performed at the Centrus facility in Oak Ridge, TN.

Frequently Asked Questions

Is the salary disclosed for the Mechanical Engineer position at geosyntec?
The salary for this Mechanical Engineer role at geosyntec is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Mechanical Engineer position at geosyntec located?
This Mechanical Engineer role at geosyntec is based in Oak Ridge, TN, US. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Mechanical Engineer role at geosyntec full-time or part-time?
This is listed as a FULL TIME position. It is posted as a Mechanical Engineer role in the Mechanical Engineer department at geosyntec.
Which team or department does the Mechanical Engineer at geosyntec belong to?
This Mechanical Engineer position is part of the Mechanical Engineer department at geosyntec. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Mechanical Engineer position at geosyntec?
Click the "Apply Now" button on this page. You will be redirected to geosyntec's official application portal hosted on icims where you can submit your application directly.
When was the Mechanical Engineer job at geosyntec posted?
This Mechanical Engineer position at geosyntec was posted on Jun 2, 2026. Apply as soon as possible — early applications are often reviewed first.
Mechanical Engineer
geosyntec
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