Mid-Level Mechanical Engineer (Hybrid/Remote)

Amentum • Oak Ridge, TN • 10h ago

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 Mid-Level Mechanical Engineer to support our Oak Ridge Project.

Description:

As a mid-level mechanical engineer, you will support and execute the design of building mechanical systems for industrial and government facilities, including HVAC, ductwork, piping, and plumbing systems. This role involves independent technical contributions, coordination with multidisciplinary teams, and adherence to Amentum's quality and engineering procedures to deliver fully coordinated, compliant design packages.

The successful candidate will perform detailed engineering design tasks, support peer reviews, and contribute to projects from concept development through construction support.

Key Responsibilities:

Perform and support the design of HVAC, plumbing, and piping systems, including B31.3 process piping

Develop and check:

Engineering calculations

Equipment sizing

System layouts

Design deliverables and drawings

Coordinate mechanical designs with structural, electrical, architectural, and process disciplines

Utilize discipline-specific design and analysis software to support system design

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

Participate in internal design reviews and incorporate review comments

Support construction activities, including responses to RFIs and submittal reviews

Adhere to established quality assurance programs and procedures

Basic Qualifications:

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

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

Ability to work effectively within multidisciplinary teams to meet project budgets and schedules

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

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

Preferred Qualifications:

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

Prior nuclear, DOE, or high-hazard facility design experience

Experience working under a formal quality program (ISO 9001, NQA 1)

Professional Engineer (PE) license, or ability to obtain

Strong analytical, problem-solving, and communication skills

Self-motivated, detail-oriented, and team-focused professional

Proficiency with Microsoft Office (Excel, Word, Outlook)

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:

$90,000 - $145,000

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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