Senior Machine Design Engineer

About the role

Amentum is seeking a Senior Machine Design Engineer to join its Advanced Solutions Group. The role involves leading and managing Machine Design projects within a multi‑discipline team, ensuring client satisfaction and delivery of projects within scope, budget, and schedule. Candidates may be based at any of Amentum’s offices in Tullahoma, TN; Farmington Hills, MI; or Greenville, SC. The group delivers design, construction, and operation of unique and complex R&D facilities for nuclear, automotive, motorsports, defense, and aerospace clients, often working on “blank‑sheet‑of‑paper” designs in a dynamic, challenging environment.

Responsibilities

• Independently plan, schedule, conduct, or coordinate detailed phases of engineering work through selection and adaptation of techniques, procedures, and criteria.
• Analyze complex work features and apply machine design principles or devise new approaches to solve problems.
• Thoroughly review results from assigned tasks to verify completeness, correctness, integration with project objectives, and adequate documentation.
• Develop and present technical reports, 3D concepts, presentations, and calculations to project management and clients.
• Coordinate and formally review the work of others for technical approach and techniques.
• Evaluate and define interfaces with other disciplines, working closely with structural, mechanical process, controls and instrumentation, and aerodynamics/fluid dynamics engineers.
• Lead design teams to produce complete design packages, including detailed drawings, calculations, and specifications as required.

Qualifications

Required: U.S. citizenship; Bachelor of Science in Mechanical or Aerospace from an ABET‑accredited program; minimum 15 years of progressive Machine Design experience; demonstrated experience leading engineers and designer/drafters; design for small‑quantity fabrication & manufacturing (milling, turning, welding, laser‑cutting, forming, etc.); design for assembly & installation; demonstrated knowledge of common machine design elements (gears, bearings, belts, machine screws, chains, cams, linkages, gearmotors, servomotors, etc.); strong mechanical engineering analytical skills (kinematics, dynamics, stress/strain, power transmission, etc.); FEA – static stress‑strain, natural frequency; demonstrated expertise in GD&T/ASTM Y14.5 for detailed design drawings, including tolerance, fits, and stack‑up analysis; scope, schedule, and budget management.

Preferred: 3D CAD experience (Inventor or SolidWorks preferred); FEA – thermal, non‑linear, forced mode dynamics, multi‑physics (Ansys preferred); design experience with ASME B&PV Section VII, Div I & Div II; fluid power – pneumatic/hydraulic cylinders, valve stand design, P&IDs; basic experience with machine instrumentation (proximity sensors, vision sensors, strain gauges, scales, etc.); installation support and supervision – guiding suppliers, sub‑contractors, and trades on‑site and from the office; design for fiber‑composites manufacturing (fiberglass, carbon fiber).

Benefits

• 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

Pay

$140,000 – $180,000 (good‑faith estimate; actual compensation may vary based on responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws).

Schedule

Work primarily performed in an inside‑office environment; travel 1‑10 days per quarter.