Job description

Amentum is a global leader in advanced engineering and innovative solutions, supporting critical missions across defense, intelligence, energy, and civilian sectors. Our people are our competitive advantage, driven by purpose, collaboration, and a commitment to delivering excellence for our customers and communities. We are currently seeking a Specialty Mechanical Engineer to support our Nuclear Projects – Oak Ridge Group. Amentum Nuclear Projects is a Tier 1 service provider to the U.S. Department of Energy, we deliver safe and innovative solutions at complex nuclear cleanup and production sites. Our services include program management, decommissioning, environmental remediation, waste and nuclear material management, nuclear operations, consulting, and engineering and construction. We’re looking for a Senior Specialty Mechanical Equipment Engineer knowledgeable in specialty machinery design. Ideal candidate would have 15 years of experience and be competent using discipline-specific technical software such as: SOLIDWORKS, Creo, ANSYS and other CAD/CAE software packages. The work will be performed in Oak Ridge, TN with potentially some travel. Join us and love what you do. Focus on tackling the toughest challenges with a smile as you support the development of life changing infrastructure that improves communities across the United States. If you’re up for the challenge, we’ve been looking for someone just like you. Join our team and help us lay the foundation for human progress. Requirements: 15 or more years of experience B.S. Engineering from an ABET accredited engineering school. Knowledge and experience with specialized mechanical equipment. Experience with management of scope, schedule, and budget of individual projects. Ability to follow established Amentum’s quality procedures and ensures that all work accomplished under their control is accomplished under established quality procedures. Experience working within a quality system based on ISO 9000 or NQA-1 Knowledge of machine design, selection of machine elements (bearings, seals, etc.) and machine controls (hydraulic, electrical, etc.) Mentoring specialty mechanical engineers and designers. Communication of complex ideas to management and clients. Creation and review of complex mechanical calculations. Competent using discipline-specific technical software such as: SOLIDWORKS, Creo, ANSYS, etc. Competent using Microsoft Office software. US citizenship required. Preferred qualifications: Ideal candidate would have 15 years of experience Master’s degree is a plus DOE Q clearance is preferred but not required A person residing a commutable distance from our Oak Ridge, TN office Essential Functions: Intermittent sitting, walking, standing, bending, squatting, climbing, kneeling, twisting, and lifting. Lifting requirements limited to 20 lbs. in the form of supplies, drawings, etc. Longest distance carried of 50 feet. Hand manipulation is required for simple grasping, pushing and pulling, and fine manipulation. Right and/or left hands utilized. Occasional need to reach and/or work above the shoulder, for supplies, as well as below the shoulder for same. No foot controls necessary. Must be alert to equipment in the field, there will be occasional travel, will work near construction job site equipment when in the field, occasional need to work near hazardous equipment and machinery, occasional need to walk on uneven ground, exposure to dust, gas or fumes, exposure to noise, extremes in temperature or humidity, and potential work at heights. At Amentum, we help prepare people for new opportunities and challenges. With positions at every level, openings in multiple disciplines, expertise in a range of markets and offices around the globe, we create an environment where you can learn, grow, and thrive. From our competitive benefits program to our Health and Safety initiative of zero workplace injuries, we believe that you ll find a flourishing career here at Amentum. Equipment and Machines: Standard office PC, with software will be provided Travel required – As needed Attendance: Ability to work in the Oak Ridge office is required Other Essential Functions: U.S. Citizenship required. 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. Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others. Must take and pass a pre-employment drug and background check. Compensation Details: $140,000 - $200,000 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: 09/09/2026 - 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 .

Requirements

Must-haves

15 or more years of experience
B.S. Engineering from an ABET accredited engineering school.
Knowledge and experience with specialized mechanical equipment.
Experience with management of scope, schedule, and budget of individual projects.
Ability to follow established Amentum’s quality procedures and ensures that all work accomplished under their control is accomplished under established quality procedures.
Experience working within a quality system based on ISO 9000 or NQA-1
Knowledge of machine design, selection of machine elements (bearings, seals, etc.) and machine controls (hydraulic, electrical, etc.)
Mentoring specialty mechanical engineers and designers.
Communication of complex ideas to management and clients.
Creation and review of complex mechanical calculations.
Competent using discipline-specific technical software such as: SOLIDWORKS, Creo, ANSYS, etc.
Competent using Microsoft Office software.
US citizenship required.
Ideal candidate would have 15 years of experience
Equipment and Machines: Standard office PC, with software will be provided
Travel required – As needed
Attendance: Ability to work in the Oak Ridge office is required
Other Essential Functions: U.S. Citizenship required.
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.
Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others.

Nice-to-haves

Master’s degree is a plus
DOE Q clearance is preferred but not required
A person residing a commutable distance from our Oak Ridge, TN office

Application prep

Use the role’s language and application details while tailoring your materials.

Platform: workday
Effort: long

Benefits

Benefits detected in the listing.

Dental

Vision

401(K)

Paid Time Off

Parental Leave