Jr-Level Mechanical Engineer - (Hybrid/Remote)

Amentum • Oak Ridge, TN • 1h ago

Description:

As a Jr-level mechanical engineer you will support the design and analysis of building mechanical systems for industrial and government facilities. This role involves assisting senior engineers and project managers 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 senior engineers with the design of HVAC, plumbing, and piping systems, including B31.3 process piping

Perform basic engineering calculations under direct supervision, such as:

Heating and cooling load calculations

Pipe and duct sizing

Equipment selection support

Create and revise engineering drawings using AutoCAD, MicroStation, Revit, SmartPlant, or similar drafting tools.

Apply applicable codes, standards, and procedures (e.g., IMC, ASHRAE, NFPA, ASME)

Attend project meetings and training sessions as required

Maintain organized project files, drawings, and documentation

Follow established quality assurance programs and procedures

Basic Qualifications:

B.S. Mechanical Engineering from an ABET accredited engineering program.

0 to 5 years in industrial/government design of Mechanical, HVAC, Plumbing Systems, and related mechanical building systems.

Able to work in a group of engineers and designers to complete technical portions of projects within established budgets and schedules.

Familiarity with discipline-specific tools such as: Carrier HAP, Trane TRACE, AutoCAD, MicroStation, etc.

Knowledge of applicable codes & standards (International Mechanical Code, NFPA, ASHRAE, etc.).

Strong organizational skills and attention to detail.

Preferred Qualifications:

In addition to the Basic Qualifications the ideal candidate might also have:

Engineering-in-Training (EIT), or ability to obtain

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 :

Primarily office-based work in a secure engineering environment?

Amentum office location is preferred; hybrid or remote work may be available by prior agreement based on role and project requirements

Occasional exposure to industrial facilities, which may include elevated noise levels, hazardous materials, or controlled areas

Site visits may be required

Physical Requirements: ?

Ability to sit or stand for extended periods

Ability to lift up to 35 lbs?occasionally

Vision correctable to 20/20

Ability to read and use computer-aided design software effectively

Appropriate PPE and training will be provided as required

Compliance & Eligibility Requirements:

U.S. Citizenship required (no dual citizenship)

Valid driver's license is required

Ability to obtain and maintain a security clearance

Ability to pass?pre-employment background investigation and drug screening

Willingness to work overtime or outside normal hours as needed

Professional appearance appropriate for a customer-facing engineering environment

Travel required: less than 10%

Compensation Details:

$75,000 - $115,000

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:

04/20/2026 - 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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