Mechanical / HVAC Designer

Amentum•Oak Ridge, TN

1d•$32 - $70•Onsite

About The Position

As a mid-level 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 5+ years 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 (<10%) OTHER ESSENTIAL FUNCTIONS U.S. Citizenship required. No dual citizens. Valid driver's license is required. Must be able to work in a team atmosphere. Must put forward a professional behavior that enhances productivity and promotes teamwork and cooperation. Must be familiar with and comfortable working in a team environment. Appropriate grooming and dress code acceptable for a customer environment is necessary. Must be able to obtain and maintain a security clearance as required. Must take and pass a pre-employment drug and background check. Compensation Details: $32.00 - $70.00 The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws. Benefits Overview: Our health and welfare benefits are designed to support you and your priorities. Offerings include: Health, dental, and vision insurance Paid time off and holidays Retirement benefits (including 401(k) matching) Educational reimbursement Parental leave Employee stock purchase plan Tax-saving options Disability and life insurance Pet insurance Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits. Original Posting: 03/31/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs. Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters. Welcome back! We encourage you to check on the status of your current job applications with us. You can also search for a list of our current job openings and see if there are any new positions that might be a good fit for you. Thank you for continued interest in employment with Amentum. For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at https://www.amentum.com/ If you need a reasonable accommodation for any part of the employment process, please contact us by email at [email protected] and let us know the nature of your request and your contact information. Requests for accommodation will be considered on a case-by-case basis. EEO including Disability/Protected Veterans Labor Laws Posters Amentum has become aware of unauthorized individuals who are falsely using the Amentum name and /or logo in an attempt to solicit fees from potential job seekers. These deceptive and unauthorized individuals are soliciting money, promising placement in a position with Amentum. Please note any communication requesting any amount of money in exchange for employment with Amentum is fraudulent. These communications do not originate from Amentum and are not associated with the recruitment process. Amentum and its affiliates never charge candidates fees or payments of any kind in order to secure employment. As a precaution, we recommend you do not disclose personal or financial details to anyone as a response to an unsolicited email, social media, or dating website request. Amentum will never as ask for a placement fee or any other fee to expedite the hiring process. If you are contacted by anyone offering employment with Amentum, you should never be asked to pay a fee for recruiting. Amentum personnel will always send email from an identifiable corporate account (ending in @amentum.com) and never from a public email account like Yahoo!, Google, Gmail, or Hotmail. If you are contacted regarding a fraudulent employment proposal, we encourage you to alert your local law enforcement agency/police authority. To read more about Amentum’s commitment to ethics, please click here.

Requirements

High School Diploma/GED
5+ years 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
U.S. Citizenship required. No dual citizens.
Valid driver's license is required.
Must be able to work in a team atmosphere.
Must put forward a professional behavior that enhances productivity and promotes teamwork and cooperation.
Must be familiar with and comfortable working in a team environment.
Appropriate grooming and dress code acceptable for a customer environment is necessary.
Must be able to obtain and maintain a security clearance as required.
Must take and pass a pre-employment drug and background check.

Nice To Haves

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

Responsibilities

creating HVAC equipment, ductwork and piping 3D models
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
creating the design deliverables such as orthographic and isometric drawings
assist in interference detection and resolution
ensuring proper integration with other tools