Senior Mechanical Engineer - Building Systems Leader, Hybrid

Amentum; Oak Ridge (TN); On-site; USD 140,000 - 165,000; Full time

Job summary

Amentum is seeking a Senior Mechanical Engineer to lead the design and delivery of building mechanical systems for industrial and government facilities. You will oversee HVAC, plumbing, and piping design, mentor junior staff, and ensure code-compliant solutions across the project lifecycle.

The successful candidate will collaborate with project management and clients to provide technically excellent, safe, and efficient engineering results while adhering to quality procedures and security

Qualifications

• B.S. Mechanical Engineering from ABET-accredited program.
• 15+ years in industrial/government design of Mechanical, HVAC, Plumbing Systems and related building systems.
• Professional Engineer (PE) license required.

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, and budget control.
• 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 RFIs, submittals, and field issues.
• Mentor and guide engineers and designers on applicable codes, standards, and best practices.
• Ensure all work complies with Amentum’s engineering and quality procedures.

Skills

Leadership

Mentoring

Engineering judgment

Code compliance

Client communication

Education

B.S. Mechanical Engineering (ABET-accredited)

Tools

Carrier HAP

Trane TRACE

PipeFlo

AutoCAD

MicroStation

Job description

Amentum is seeking a Senior Mechanical Engineer to lead the design and delivery of building mechanical systems for industrial and government facilities. You will oversee HVAC, plumbing, and piping design, mentor junior staff, and ensure code-compliant solutions across the project lifecycle.

The successful candidate will collaborate with project management and clients to provide technically excellent, safe, and efficient engineering results while adhering to quality procedures and security