Amentum delivers world-class solutions through the expertise, dedication, and collaboration of our people. We partner with our customers to solve complex problems challenges and are committed to fostering a workplace where employees can grow, succeed, and make a difference. We are currently seeking a Mechanical Engineering Intern to support our Oak Ridge office.
As a Mechanical Engineering Intern, you will support the design and analysis of building mechanical systems for industrial and government facilities. This role involves assisting senior engineers with HVAC, ductwork, piping, and plumbing system design, engineering calculations, drawing development, and construction support.
The successful candidate will collaborate with multidisciplinary design teams to deliver fully coordinated, high-quality design packages, while adhering to Amentum’s engineering procedures and quality standards.
Key Responsibilities:
- Assist engineers with the design of HVAC, plumbing, and piping systems
- Perform basic engineering calculations under direct supervision, such as:
o Heating and cooling load calculations
o Pipe and duct sizing
o Equipment selection support
- Maintain organized project files, drawings, and documentation
- Follow established quality assurance programs and procedures
Basic Qualifications:
- Enrolled in B.S. Mechanical Engineering program accredited by ABET.
- Must be able to obtain and maintain facility credentials/authorization. Note: U.S. Citizenship is required for facility credentials/authorization at this work location
- Able to work in a group of engineers and designers to complete technical portions of projects within established budgets and schedules.
- Strong organizational skills and attention to detail.
Preferred Qualifications:
In addition to the Basic Qualifications the ideal candidate might also have:
- Strong analytical, problem-solving, and communication skills
- Proficiency with Microsoft Office (Excel, Word, Outlook)
- Self-motivated and team-oriented professional with high personal integrity
Work Environment:
- This role will be onsite at our Oak Ridge office
Compensation Details:
$21/HR - $31/HR
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:
10/28/2026 - Until FilledAmentum 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.
Skills Required
- Enrolled in a B.S. Mechanical Engineering program accredited by ABET
- Must be able to obtain and maintain facility credentials or authorization
- U.S. citizenship required for facility credentials or authorization at this work location
- Ability to work collaboratively with engineers and designers to complete technical project work within budgets and schedules
- Strong organizational skills and attention to detail
- Strong analytical, problem-solving, and communication skills
- Proficiency with Microsoft Office, including Excel, Word, and Outlook
- Self-motivated and team-oriented with high personal integrity
Amentum Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Amentum and has not been reviewed or approved by Amentum.
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Healthcare Strength — Healthcare offerings are described as comprehensive, with medical, dental, and vision plans and multiple PPO/HSA options. Mental health support via an employee assistance program and other wellness resources is also included in the benefits mix.
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Retirement Support — Retirement support is positioned as a meaningful part of total rewards through a 401(k) plan with employer matching. Profit-sharing contributions and immediate or near-term vesting in some cases further strengthen the retirement value proposition.
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Leave & Time Off Breadth — Time-off benefits are presented as solid for the sector, including tiered PTO accrual by tenure and a set of paid holidays. Role-dependent flexible or remote work options and leave programs add to perceived work-life support.
Amentum Insights
What We Do
Amentum is a premier global technical and engineering services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. We draw from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Germantown, Md., we employ more than 20,000 people in 48 states and 28 foreign countries and territories. Visit us at amentum.com to explore how we deliver excellence for our customers’ most vital missions.
