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 Machine Design Engineer II to join Amentum’s Advanced Solutions Group. Candidates may be based at either of our offices in Tullahoma, TN, 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 join Machine Design projects as part of a multi-discipline team of professionals. We are looking for an entry-level or early career Mechanical Engineer with strong technical skills, academic achievement, and sense of ownership. Essential Responsibilities: Projects are often complex and multi-discipline. For the majority of assignments, junior-mid Engineers will be issued specific objectives, approaches, and possible solutions by a supervising engineer. The Machine Design Engineer II: Independently but with guidance from a more senior engineer, performs project assignments that involve few complex features and can be guided by codes, standards, and other precedents of the discipline. Analyzes and/or evaluates the results of an analysis using techniques prescribed by senior engineers or supervisors. Accomplishes, complete tasks of well-defined scope or solves problems which require investigation of a limited and well-defined number of variables. Prepare technical reports, presentations, and calculations. Coordinates with designer/drafters. May formally review the work of others for techniques and technical approach, if in area of specific technical expertise. Supports interface development with other disciplines, working closely with structural, mechanical process, controls and instrumentation, and aerodynamics/fluid dynamics engineers. Participates in the production of 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 Three (3) years’ relevant Machine Design experience (see “Adjacent Industries” below) Knowledge of, experience of some, and exposure to most, 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. Preferred Qualifications: Design for small-scale fabrication & manufacturing (milling, turning, welding, laser-cutting, forming, etc.) Design for assembly & installation. 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. 3D CAD experience, Inventor or Solidworks preferred. Design for fiber-composites manufacturing (fiberglass, carbon fiber). 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, subcontractors and other trades questions from the office and on-site. 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 1-3 days per quarter. Essential Functions Special clothing/equipment (wearing) - 1% Work Environment - Inside - 99%; Outside - 1% Travel/Transportation Requirements - 1-3 days per quarter Office equipment/machines - 100% Hours - Monday thru Thursday - 7:30am to 5:15pm, Friday - 7:30am to 11:30am Regular Attendance - 100% Compensation Details: $82k – $108k 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: Our health and welfare benefits are designed to support you and your priorities. Offerings include: 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: 10/12/2026 - 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 .

Requirements

Must-haves

We are seeking a Machine Design Engineer II to join Amentum’s Advanced Solutions Group. Candidates may be based at either of our offices in Tullahoma, TN, or Greenville, SC.
Projects are often complex and multi-discipline. For the majority of assignments, junior-mid Engineers will be issued specific objectives, approaches, and possible solutions by a supervising engineer.
Independently but with guidance from a more senior engineer, performs project assignments that involve few complex features and can be guided by codes, standards, and other precedents of the discipline.
Analyzes and/or evaluates the results of an analysis using techniques prescribed by senior engineers or supervisors.
Accomplishes, complete tasks of well-defined scope or solves problems which require investigation of a limited and well-defined number of variables.
Prepare technical reports, presentations, and calculations.
Coordinates with designer/drafters.
May formally review the work of others for techniques and technical approach, if in area of specific technical expertise.
Supports interface development with other disciplines, working closely with structural, mechanical process, controls and instrumentation, and aerodynamics/fluid dynamics engineers.
Participates in the production of complete design packages, including detailed drawings, calculations, and specifications, as required.
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 Three (3) years’ relevant Machine Design experience (see “Adjacent Industries” below)

Nice-to-haves

Design for small-scale fabrication & manufacturing (milling, turning, welding, laser-cutting, forming, etc.)
Design for assembly & installation.
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.
3D CAD experience, Inventor or Solidworks preferred.
Design for fiber-composites manufacturing (fiberglass, carbon fiber).
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, subcontractors and other trades questions from the office and on-site.

Application prep

Use the role’s language and application details while tailoring your materials.

Platform: workday
Effort: long

Benefits

Benefits detected in the listing.

Dental

Vision

401(K)

Paid Time Off

Parental Leave