Amentum

Applied Multiphysics Engineer III

Amentum • $108K — $126K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • B.S.M.E. from an accredited engineering school
  • Minimum of 7 years relevant Machine Design experience
  • Demonstrated knowledge in designing ground test facilities
  • Strong mechanical engineering analytical skills
  • Experience with FEA for static stress-strain and natural frequency analysis

Responsibilities

  • Independently perform project assignments with guidance from senior engineers
  • Analyze and evaluate results using prescribed techniques
  • Complete tasks of limited scope and solve specific problems
  • Prepare technical reports, presentations, and calculations
  • Coordinate work of designer/drafters or junior engineers
  • Review work of others in specific technical areas
  • Support interface development with other engineering disciplines
  • Produce complete design packages including detailed drawings and specifications

Benefits

  • Health, dental, and vision insurance
  • Paid time off and holidays
  • Retirement benefits with 401(k) matching
  • Educational reimbursement
  • Parental leave
  • Employee stock purchase plan
  • Tax-saving options
  • Disability and life insurance
  • Pet insurance
Full Job Description

A mid-level Mechanical Engineer in E&P would perform work on technically challenging and unique design efforts, such as hypersonic wind tunnels, rocket test stands, aerospace test chambers, nuclear facilities, and scientific facilities. The Engineer may function as the Applied Multiphysics lead on small projects, working with other engineers & designer/drafters.

Duties and Responsibilities:

Projects are often complex and multi-discipline. For the majority of assignments, Mid-level Engineers will be issued specific objectives, approaches, and possible solutions by a supervising engineer. The Mid-level Engineer:

  • Independently 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 limited scope or solves problems which require investigation of a limited number of variables.
  • Prepares technical reports, presentations, and calculations.
  • Coordinates the work of designer/drafters or junior engineers.
  • May formally reviews 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.
  • Produces complete design packages, including detailed drawings, calculations, and specifications, as required.

Minimum Experience/Education:

  • B.S.M.E. from an accredited engineering school
  • Minimum of Seven (7) years99 relevant Machine Design experience (see 9cAdjacent Industries9d below)

Key Skills:

  • Demonstrated knowledge and experience with design of ground test facilities involving extremes in temperature, heat transfer, pressure, and mechanical dynamics.
  • Strong mechanical engineering analytical skills 93 kinematics, dynamics, stress/strain, power transmission, etc.
  • FEA 93 static stress-strain, natural frequency

Preferred Qualifications:

  • Design for small-scale fabrication & manufacturing (milling, turning, welding, laser-cutting, forming, etc.)
  • FEA 93 thermal, non-linear, forced mode dynamics and multi-physics analysis, Ansys preferred
  • Design experience with ASME B&PV Section VII, Div I & Div II
  • 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)
  • Fluid Power 93 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 93 guiding and answering suppliers, sub-contractors and other trades questions from the office and on-site

Adjacent Industries

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

Compensation Details:

$108,000 - $126,500

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:

10/05/2026 - 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.

About Amentum

Amentum is a leading provider of engineering and technical services to the U.S. government and commercial customers worldwide. The company offers a wide range of services, including environmental remediation, facilities management, and logistics and supply chain management, among others. Amentum has a global presence, with operations in over 20 countries, and serves a diverse range of customers, including the Department of Defense, the Department of Energy, and the Department of State. The company is committed to providing high-quality services and has a strong reputation for technical expertise, innovation, and customer satisfaction.
Learn more about Amentum
Size
20,000 employees
Industry
Net Income
$200 million
Founded
2014
Revenue
$5 billion

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