Structural/Mechanical Design Engineer (ES5)

Amentum; Huntsville (AL); On-site; USD 95,000 - 155,000; Full time

Benefits offered by this job

Health, dental, vision insurance

Paid time off and holidays

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 Space Exploration Division (ASED) is seeking a senior Mechanical Engineer to develop Creo CAD models and fabrication drawings for NASA's Space Reactor-1 Freedom program, supporting Mars exploration. Expect aggressive schedules and collaboration with NASA civil servants and contractors.

Required are a BS in Mechanical Engineering (ABET-accredited) with 10+ years of experience or an MS with 8+ years, plus Creo proficiency, GD&T, statics and dynamics.

Qualifications

• Requires a BS in Mechanical Engineering from an ABET-accredited program; MS preferred.
• 10+ years of experience with mechanical design for aerospace/flight hardware is expected.
• Must be proficient in Creo CAD and 2-D drafting; GD&T knowledge essential.
• Must be a US citizen and have a STAR ID; security clearance may be required.

Responsibilities

• Develop Creo CAD models and fabrication drawings for NASA’s Space Reactor-1 Freedom in support of Mars exploration.
• Meet aggressive schedules to meet all conceptual, testing, and flight hardware delivery dates.
• Work as part of an integrated product team with contractors and NASA Civil Servants.
• Develop and deliver reports and presentations to MSFC and Amentum management.

Skills

Creo CAD

GD&T

Statics & Dynamics

US Citizenship & STAR ID

NX knowledge

CAD configuration management

Flight hardware design

Material selections

Education

ABET-accredited BS in Mechanical Engineering

MS in Mechanical/Structural Engineering

Tools

NX CAD

Configuration management tools

Job description

Join Our Journey

At Amentum Space Exploration Division (ASED your growth is our priority! That’s why we offer an array of exciting opportunities for your career development. From the transformative Team Lead Academy to education reimbursement, personalized mentoring, and engaging company-sponsored networking events, you have the power to shape your professional journey in a way that aligns with your aspirations.

Find Your Community

At the heart of our thriving business are the incredible people who make it all possible. We celebrate a vibrant array of cultures, backgrounds, and experiences. Here, we foster an environment where everyone—employees, clients, and partners alike—are treated with the dignity and respect they deserve.

Prioritize Your Well-Being

Our extensive benefits package is designed with your health in mind. Enjoy wellness programs, paid holidays, generous time off, employee perks, and so much more. We’re here to help you achieve a harmonious balance in your life—both at work and at home.

Together, We Soar

Our dynamic team consists of 10 companies united in a single mission: to venture from Moon to Mars and beyond. Join us on this extraordinary adventure!

Responsibilities:

Develop Creo CAD models and fabrication drawings for NASA’s Space Reactor-1 Freedom in support of future Mars exploration. Candidate must be accustomed to working aggressive schedules to meet all conceptual, testing, and flight hardware delivery dates. A background in structural fluid system designs; including concepts derived from various load cases, strong statics and structural analysis experience is highly recommended. Project role will require working as part of an integrated product team with other contractors as well as NASA Civil Servants from various organizations and disciplines.

A degree in Mechanical Engineering Degreeor related field from an ABET accredited institution is required. Typically, educational requirement is a BS with at least 10 years of experience or a master’s degree with at least 8 years of experience.

The following skills are required:

• Proficiency in Creo/Pro-Engineer 3-D modeling and 2-D drafting
• Basic knowledge of Geometric Dimensioning & Tolerancing (ASME Y14.5M-1994) and experience applying GD&T to fully dimensioned production drawings.
• General knowledge and application of Statics and Dynamics
• Must be a US Citizen and have a STAR ID

The following skills are highly desired:

• Familiarity with handling CAD (Creo - additional NX knowledge is a plus) and drawing Configuration management processes
• Working knowledge of typical mechanical design material selections
• General understanding of manufacturability and design fabrication practices for flight hardware.
• Strong oral and written communication skills to better support the customer during design presentations and status meetings.

Work with a team of engineers and structural analysts to release engineering and manufacture flight hardware. Develop detailed fabrication and assembly drawings and provide fabrication support to manufacturing personnel. Participate in task meetings and conferences as requested. Collaborate with outside vendors and personnel from NASA. Develop and deliver reports and presentations to MSFC and Amentum management as needed. This position will work to an aggressive delivery schedule and may require the candidate to occasionally work overtime to meet schedule deadlines.

Essential Functions

Work Environment

Office and laboratory environment. Requires ability to provide clear, concise, accurate and timely communication, both verbally and in writing (100%). Requires ability to interact professionally with co-workers, management, and client (100%). Requires travel in the domestic USA (<15%).

Physical Requirements

Requires sitting for extended periods of time in meetings with peers, management, and with our client at NASA facilities to discuss technical issues (10%). Also, requires sitting for extended periods of time at a desk to write reports and perform engineering tasks (40%). Requires ability to use stairs or elevators for access between floors and multiple buildings at NASA and our facilities (10%).

Equipment and Machines

Requires ability to operate a personal computer, a telephone, fax machine, copier, calculator, and other general office equipment (100%).

Attendance

Normal workday is from 7:30 a.m. through 4:30 p.m., Monday thru Friday. Minimal overtime may be required (10%) to meet schedule milestones and to support technical demands of the job. Regular attendance is a necessity and adequate arrangements for delegating duties during absences are required.

Other Essential Functions

The ability to work independently with minimal supervision, to make rational decisions, and to exercise good judgment is essential (100%). Grooming and dress must beappropriate for the position and must not impose a safety risk/hazard to the employee or others.

Proof of U.S. Citizenship is required.

#ESSCA #ASED #Amentum

Compensation Details:

ES5

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:

08/18/2026 - 09/30/2026

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.