Mechanical Engineer

Amentum • Idaho Falls, ID • 1d ago

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 (https://postings.govdocs.com/#/vxSkbztPuAwwxfs) .

Amentum

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