Sr. Mechanical Design Engineer 6

Amentum delivers world-class solutions through the expertise, dedication, and collaboration of our people. We partner with our customers to solve complex challenges and are committed to fostering a workplace where employees can grow, succeed, and make a difference. We are currently seeking a Mechanical

Design Engineer 6 to support our Denver office.

Job Description

(Duties & Responsibilities)

This position is with dynamic multi-discipline engineering group specializing in the design of prototype/one-off custom equipment, gloveboxes, hot cells, specialty research equipment and custom-designed, remotely operated mechanisms for handling radioactive and hazardous materials.

PRINCIPAL RESPONSIBILITIES (FOR ALL GRADE LEVELS):

• Maintains liaison with design and drafting groups.
• Prepares, reviews and approves drawings as required.
• Advises the Supervising Discipline Engineer about status of assignment(s) with respect to schedule, budgets, delays and adverse problems.
• Ensures quality, quantity and completeness of the assigned engineering tasks.
• Plans and schedules engineering efforts associated with assigned project.
• Maintains timely and accurate oral and written technical reports regarding assigned engineering activities.
• Keeps proper engineering files and records.
• Develops understanding of industry codes and standards.
• Understands and uses computer software and applications associated with engineering assignments.
• Continually upgrades technical knowledge and capabilities and pursues additional coursework and training.
• Complies with company’s safety awareness program, office and/or field safety policies.
• Develops an understanding of the role of each functional area within the company.
• Conforms to company core values.
• Acts with integrity in all elements of responsibility.
• Expresses ideas clearly and listens effectively to the ideas of others.
• Supports alignment of customer and company objectives.
• Performs other related engineering work as required.

Purpose/Scope Description:

Perform a variety of engineering assignments in planning and overseeing research, development, design, manufacture, test, installation, operation, and maintenance of diverse mechanical equipment and systems and generally as a lead of a design, analysis or review team on the most complex engineering assignments.

Essential Responsibilities:

• Performs a range of design development, analysis, or review tasks independently.
• Responsible for complete designs, analyses, or design reviews.
• Generate complete design specifications for the most complex projects.
• May train other engineers on technical issues related to the research, design, development, testing and analysis of engineering assignments.
• Coordinate and work closely with other engineering, logistics, financial, and program management disciplines to define system specifications and requirements.
• Establish and maintain a filing system or databases as needed for tracking project status.
• Develop, maintain and produce technical documentation and system/subsystem specifications.
• Direct interface and liaison with internal and external customers at all levels from quotation to final design and test activities, design reviews and technical working group meetings to comply with requirements and specifications.
• Conduct site visits and experimental investigations and analyze engineering problems, propose solutions and alternatives, and provide recommendations.
• Verify and comply with engineering documentation standards and test procedures.
• Prepare, deliver and submit technical papers and perform engineering studies.
• Support development of technical proposal and provide comments on the technical content and level of effort of the proposed scope of work.
• May organize and supervise a group of employees for a given project, contract or job with overall responsibility for cost, schedule, technical and employee performance.

Required Qualifications

• Education: Bachelor of Science Degree (or equivalent education) in an appropriate engineering discipline or the sciences from a four-year accredited college or university.
• Experience: Minimum of 15 years of job-related experience or equivalent.
• Good communications and analytical skills
• Working knowledge of computer systems and integrated software application programs.
• Position may require travel.
• Position may require the ability to pass and maintain a Security Clearance.
• US Citizen only. Dual Citizens are not allowed.

Preferred Qualifications

• PE license is preferred.
• Proficient with 3D design software (PTC Creo preferred)
• Proficient with Mathcad
• Experience with the Department of Energy (DOE) projects is preferred.
• Experience with glove boxes preferred.
• Experience with hot cells preferred.
• Experience with nuclear projects preferred.
• Demonstrated capability in the design of custom equipment and/or containment systems, development of design documentation including fabrication drawings, engineering analyses, strength of materials calculations, fabrication and procurement specifications, knowledge in the selection of materials, and FEA calculations.

Compensation

HIRING SALARY RANGE: $170K - $190K (Annually) (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant internal equity, and alignment with market data.)

Benefits

Amentum offers the following benefits for this position, subject to applicable eligibility requirements: medical dental and vision insurance, 401(k) retirement plan, life insurance, long-term and short-term disability insurance, 15 days of paid time off, and parental leave.

Due to the nature of work, candidate must be a US Citizen. US Dual Citizenship may be considered.

Compensation Details:

$170K - $190K

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:

07/24/2026 - 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.