Senior-Level Mechanical Engineer (Hybrid/Remote)

Amentum•Oak Ridge, TN

1d•Hybrid

About The Position

Amentum is a global leader in advanced engineering and innovative solutions, supporting critical missions across defense, intelligence, energy, and civilian sectors. The company emphasizes its people as a competitive advantage, driven by purpose, collaboration, and a commitment to delivering excellence for its customers and communities. This role is for a Senior-Level Mechanical Engineer to support the Oak Ridge Project. As a technical leader, the engineer will be responsible for the design, coordination, and delivery of building mechanical systems for industrial and government facilities, including oversight of HVAC, plumbing, and piping system designs. The position involves leadership of mechanical engineering teams and accountability for technical quality and compliance throughout the project lifecycle. The successful candidate will work closely with project management, discipline leads, and clients to deliver fully coordinated, code-compliant, and high-quality engineering solutions in accordance with Amentum’s established quality procedures.

Requirements

B.S. Mechanical Engineering from an ABET accredited engineering program
15+ years in industrial/government design of Mechanical, HVAC, Plumbing Systems, and related mechanical building systems
Demonstrated experience delivering projects from concept through detailed design completion
Proven ability to lead teams of engineers and designers within budget and schedule constraints
Proficiency with discipline-specific tools such as: Carrier HAP, Trane TRACE, PipeFlo, AutoCAD, MicroStation, etc.
Thorough knowledge of applicable codes & standards (International Mechanical Code, NFPA, ASHRAE, etc.)
Professional Engineer (PE) license required

Nice To Haves

Prior nuclear, DOE, or high hazard facility design experience
Experience working under a formal quality program (ISO 9001, NQA 1)
Strong leadership, communication, and technical mentoring skills
Demonstrated attention to detail and commitment to technical excellence
Proficiency with Microsoft Office (Excel, Word, Outlook)

Responsibilities

Lead and oversee the design of HVAC, plumbing, and piping systems, including B31.3 process piping
Serve as technical authority for mechanical system design within assigned project scope
Review, approve, and check engineering calculations, layouts, specifications, and drawings
Apply advanced engineering judgment to resolve complex design issues
Support project planning by assisting with: Scope definition, Equipment sizing, Schedule development, Budget control for mechanical design activities
Coordinate mechanical designs with structural, electrical, architectural, and process disciplines
Apply applicable codes, standards, and procedures (e.g., IMC, ASHRAE, NFPA, ASME)
Interface with clients and other stakeholders as a senior technical contributor
Provide senior level support during procurement and construction phases, including review and resolve RFIs, submittals, and field issues
Mentor and guide engineers and designers on applicable codes, standards, and best practices
Ensure all work under your technical responsibility complies with Amentum’s engineering and quality procedures