Senior Machine Design Engineer

Amentum; Tullahoma (TN); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Retirement benefits (401(k) matching)

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum is seeking a Senior Machine Design Engineer to join the Advanced Solutions Group. Based in one of our offices in Tullahoma, TN; Farmington Hills, MI; or Greenville, SC, you’ll lead machine design projects within a multi-disciplinary team.

You’ll have 15+ years of progressive machine design experience, expertise in GD&T and FEA, and a track record of delivering complex R&D facilities across defense, aerospace, and automotive sectors.

Qualifications

• Bachelor of Science in Mechanical or Aerospace from an ABET-accredited program.
• Minimum of 15 years of relevant and progressive experience in Machine Design.
• US citizenship is required to comply with government customer requirements and/or applicable government regulations.
• Demonstrated experience leading other engineers and designer/drafters.
• Design for small-quantity fabrication & manufacturing (milling, turning, welding, laser-cutting, forming, etc.)
• Design for assembly & installation.
• Demonstrated knowledge and experience 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 experience and expertise in employing GD&T/ASTM Y14.5 in detailed design drawings; understanding of tolerance, fits, and stack-up analysis.
• Scope/Schedule/Budget management.

Responsibilities

• Independently plans, schedules, conducts or coordinates detailed phases of engineering work through the selection and adaptation of techniques, procedures, and criteria.
• Analyzes complex features of the work and applies machine design principles and practices, or devises new approaches in problem solutions.
• Thoroughly reviews all results from assigned tasks and determine if outputs are complete and adequately documented.
• Develops and presents technical reports, 3D concepts, presentations, and calculations to project management and Clients.
• Coordinates and formally reviews the work of others for techniques and technical approach.
• Evaluates and defines interfaces with other disciplines, working closely with structural, mechanical process, controls and instrumentation, and aerodynamics/fluid dynamics engineers.
• Leads design team to produce complete design packages, including detailed drawings, calculations, and specifications.

Skills

Machine Design

Leadership

GD&T

FEA

Kinematics & Dynamics

Tolerance & Fit

ASME Y14.5

Manufacturing for small lot

Design for assembly

Education

ABET-accredited BS in Mechanical or Aerospace

Bachelor of Science in Mechanical or Aerospace

Tools

Inventor

SolidWorks

Ansys

Job description

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 seeking a Senior Machine Design Engineer to join Amentum’s Advanced Solutions Group. Candidates may be based at any one of our offices in Tullahoma, TN; Farmington Hills, MI; or Greenville, SC.

Our Advanced Solutions Group delivers the design, construction, and operation of unique and complex research and development facilities across the nuclear, automotive, motorsports, defense, and aerospace industries. Our team has supported an impressive range of clients, including Audi, Boeing, BMW, Fiat Chrysler, Ford, Honda, General Motors, NASA, the U.S. Air Force, U.S. Navy, U.S. Department of Energy, Volkswagen, and organizations throughout North America, Europe, and Asia.

Most of your designs will be unique, and you will usually be working on several projects at one time in a dynamic, challenging, and even fun environment. Many designs are “blank sheet of paper,” with few analogs or comparisons. This position will provide you with an exciting opportunity to lead and manage Machine Design projects as part of a multi‑discipline team of professionals. We are looking for a Machine Design engineer who will work to ensure client satisfaction and deliver key Machine Design projects within scope, budget, and schedule. You should be a self‑motivated professional with at least 15+ years of progressive Machine Design experience.

Essential Responsibilities:

• Independently plans, schedules, conducts or coordinates detailed phases of engineering work through the selection and adaptation or modification of techniques, procedures, and criteria.
• Analyzes complex features of the work and applies machine design principles and practices, or devises new approaches in problem solutions.
• Thoroughly reviews all results from assigned tasks and determine if outputs are complete, correct, integrated with project objectives, and adequately documented.
• Develops and presents technical reports, 3D concepts, presentations, and calculations to project management and Clients.
• Coordinates and formally reviews the work of others for techniques and technical approach.
• Evaluates and defines interfaces with other disciplines, working closely with structural, mechanical process, controls and instrumentation, and aerodynamics/fluid dynamics engineers.
• Leads design team to produce complete design packages, including detailed drawings, calculations, and specifications, as required.

Required Qualifications:

• US citizenship is required to comply with government customer requirements and/or applicable government regulations.
• A Bachelor of Science in Mechanical or Aerospace from an ABET‑accredited program.
• Minimum of 15 years of relevant and progressive experience in Machine Design (see “Adjacent Industries” below).
• Demonstrated experience leading other engineers and designer/drafters.
• Design for small‑quantity fabrication & manufacturing (milling, turning, welding, laser‑cutting, forming, etc.)
• Design for assembly & installation.
• Demonstrated knowledge and experience 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 experience and expertise in employing GD&T/ASTM Y14.5 in detailed design drawings; understanding of tolerance, fits, and stack‑up analysis.
• Scope/Schedule/Budget management.

Preferred Qualifications:

• 3D CAD experience, Inventor or Solidworks preferred.
• FEA – thermal, non‑linear, forced mode dynamics and multi‑physics analysis, Ansys preferred.
• Design experience with ASME B&PV Section VII, Div I & Div II.
• Fluid Power – employing pneumatic/hydraulic cylinders, valve stand design, P&IDs, etc.
• Basic experience with machine instrumentation (proximity sensors, vision sensors, strain gauges, scales, etc.)
• Installation Support and Supervision – guiding and answering suppliers, sub‑contractors and other trades questions from the office and on‑site.
• Design for fiber‑composites manufacturing (fiberglass, carbon fiber).

Adjacent Industries:

• Aerospace & Defense Mechanical Design.
• Factory Automation (material handling, web handling, process automation, etc.)
• Fluid Power (Hydraulics/Pneumatics).

Description of Work Environment:

• Work will mainly be performed in an inside‑office environment.
• Travel 1‑10 days per quarter.

Compensation Details:

$140,000 - $180,000

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:

• 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:

09/28/2026 - 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.