Entry-Level Mechanical Engineer

About the role

Amentum Nuclear Projects, a Tier 1 services provider for the U.S. Department of Energy, the National Nuclear Security Administration (NNSA) and commercial nuclear companies, is looking for an Entry-Level Mechanical Engineer based in Oak Ridge, Tennessee. The role provides design engineering support for large-scale, complex projects covering nuclear infrastructure, advanced reactors, fuel cycle facilities and national security programs, with a focus on safety, quality, regulatory compliance and financial performance.

The engineer designs, coordinates and delivers building mechanical systems for industrial and government facilities, overseeing HVAC, plumbing and piping designs, leading mechanical engineering teams and ensuring technical quality and compliance throughout the project lifecycle.

Key responsibilities

• Design HVAC, plumbing and piping systems, including B31.3 process piping
• Serve as technical authority for mechanical system design within the assigned project scope
• Review, approve and check engineering calculations, layouts, specifications and drawings
• Resolve complex design issues using sound engineering judgment
• Assist with scope definition, equipment sizing, schedule development and budget control for mechanical design
• Coordinate mechanical designs with structural, electrical, architectural and process disciplines
• Apply codes and standards such as IMC, ASHRAE, NFPA and ASME
• Interface with clients and stakeholders as a senior technical contributor
• Support procurement and construction by reviewing and resolving RFIs, submittals and field issues
• Mentor engineers and designers on codes, standards and best practices

Required profile

• B.S. in Mechanical Engineering from an ABET-accredited program
• Knowledge of International Mechanical Code, NFPA, ASHRAE and similar standards
• U.S. citizenship required; ability to obtain and maintain a security clearance and pass a pre-employment background investigation and drug screening
• Valid driver's license; ability to sit or stand for long periods, lift up to 35 lbs occasionally, and read CAD software
• Preferred: nuclear, DOE or high-hazard facility design experience, PE license, experience under ISO 9001 or NQA 1 quality programs, and strong mentoring skills

Required skills

• Carrier HAP, Trane TRACE, PipeFlo, AutoCAD, MicroStation
• Preferred: Microsoft Office (Excel, Word, Outlook)

What we offer

• Salary range of $80,000 - $100,000
• 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
• Primarily office-based work in a secure engineering environment; occasional site visits and travel of less than 10%