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Mechanical Engineer
full-timeUnited States$85k - $150k

Summary

Location

United States

Salary

$85k - $150k

Type

full-time

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About this role

The Mechanical Engineer is an engineer with strong mechanical background. Ideal candidate would have experience writing proposals, writing change orders, interpreting building codes, etc. You will act as a primary interface between design engineers, field personnel, and the client to ensure proper project execution on the Spent Fuel Handling Project. You will interface with other engineers, field personnel, subcontractors and the client to ensure proper project execution of the Spent Fuel Handling Project. The work location for this position is a construction project site approximately 55 miles from Idaho Falls near the Naval Reactors Facility at Idaho National Lab.

Amentum provides a wide range of services to government and industry in engineering, environmental, operations and management, scientific, engineering, environmental and technical services.  Our clients include USA, USAF, USACE, DOE and NASA. 

We are currently executing many contracts, performing work that is essential to our clients' missions across a broad range of functional areas. The Amentum business model allows us to successfully service our clients, leverage our integrated services, and provide our employees with growth opportunities while delivering global solutions to our client’s local programs. We consistently receive high rankings from Engineering News-Record (ENR) in many classifications, including the categories of Top Design Firms, Top Contractors, Top Green Buildings Design Firms, and Top Transportation Companies.

Qualifications - External

Requirements

  • Bachelors of Science degree in engineering 

  • 3 or more years of experience

  • USA Citizenship is required

Preferred qualifications

  • NQA-1 project experience

  • PE registration in Idaho or ability to obtain

  • Industrial  / Construction experience

  • HVAC experience

  • Person already residing in Southeast Idaho is preferred

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. 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. 

Project Information:

The work location for this position is approximately 55 miles from Idaho Falls with some days in our Idaho Falls office

USA Citizenship is required.

       

Compensation Details:

$85,000-$150,000

       

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:

01/28/2026 - 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.

Other facts

Tech stack
Mechanical Engineering,Proposal Writing,Change Order Writing,Building Code Interpretation,Project Execution,HVAC Experience,Industrial Experience,Construction Experience,NQA-1 Project Experience,PE Registration,Communication Skills,Team Collaboration,Problem Solving,Field Personnel Interface,Client Interface,Safety Awareness

About Amentum

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

Team size: 10,001+ employees
LinkedIn: Visit
Industry: Defense and Space Manufacturing

What you'll do

  • The Mechanical Engineer will act as a primary interface between design engineers, field personnel, and the client to ensure proper project execution on the Spent Fuel Handling Project. This includes interfacing with other engineers, field personnel, subcontractors, and the client.

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Frequently Asked Questions

What does Amentum pay for a Mechanical Engineer?

Amentum offers a competitive compensation package for the Mechanical Engineer role. The salary range is USD 85k - 150k per year. Apply through Clera to learn more about the full compensation details.

What does a Mechanical Engineer do at Amentum?

As a Mechanical Engineer at Amentum, you will: the Mechanical Engineer will act as a primary interface between design engineers, field personnel, and the client to ensure proper project execution on the Spent Fuel Handling Project. This includes interfacing with other engineers, field personnel, subcontractors, and the client..

Why join Amentum as a Mechanical Engineer?

Amentum is a leading Defense and Space Manufacturing company. The Mechanical Engineer role offers competitive compensation.

Is the Mechanical Engineer position at Amentum remote?

The Mechanical Engineer position at Amentum is based in United States, United States. Contact the company through Clera for specific work arrangement details.

How do I apply for the Mechanical Engineer position at Amentum?

You can apply for the Mechanical Engineer position at Amentum directly through Clera. Click the "Apply Now" button above to start your application. Clera's AI-powered platform will help match your profile with this opportunity and guide you through the application process. You can also learn more about Amentum on their website.