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Mechanical / HVAC Designer

Amentum
US-TN-Oak Ridge Posted Oct 21, 2026
Full-timeOn-site

About this role

As a Mechanical / HVAC Designer in the Amentum Nuclear Projects and Consulting business unit you will work with Senior level designers to create HVAC equipment, ductwork and piping 3D models. Additional responsibilities will include coordination with other disciplines working in BIM models, working with mechanical engineers, and designers/engineers in other disciplines to deliver a fully coordinated and collaborated project. Designer will be responsible for creating the design deliverables such as orthographic and isometric drawings. Additionally, designers will assist in interference detection and resolution as well as ensuring proper integration with other tools.

Qualifications - External

  • High School Diploma/GED

  • Experience using BIM tools for Plant such as: SmartPlant 3D, Revit, BIM/3D software, etc…

  • Proficiency using design software such as: AutoCAD, and MicroStation

  • Industrial HVAC ductwork and piping layout design experience

  • General understanding of Building Mechanical Systems: HVAC/Piping/Plumbing

Preferred Qualifications:

  • In addition to the Basic Qualifications the ideal candidate might also have:

  • 5 or more years of experience preferred.

  • Trade School or Associates Degree

  • Strong communication skills.

  • Exhibit integrity and the highest quality in all activities

  • Self-motivated, team-focused professional

  • Self-starter with the ability to learn new design software

  • Previous nuclear and industrial design experience

  • Attention to detail

Essential Functions

Work Environment Office environment. (95%)

Telework is not an option for this role, all work performed from secure office environment.

May be exposed to areas of high noise levels, hazardous propellants, explosives, chemicals and industrial facilities.

Physical Requirements: Appropriate PPE and training will be provided for all conditions. Must be able to move and sit for extended periods (100%) as well as and lift up to 35 lbs (25%). Vision correctable to 20/20. Candidate must have the ability to read and use SmartPlant design software unassisted. Equipment and Machines: Standard office equipment - PC, telephone, fax, copier, job related software (SmartPlant design) and other related equipment (90%) Attendance: Regular attendance mandatory (100%) Overtime/work outside normal schedule required (as needed)

Travel required (

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