Amentum is a leader in global engineering, project management and solutions integration, trusted to modernise the most critical missions anywhere in the world. Driven to create a safer, smarter, cleaner world, we innovate as a team of inventive doers passionate about making a difference. Underpinned by a strong culture of ethics, safety and inclusivity. Amentum is fiercely committed to operational excellence and 
successful execution. 

Are you seeking a career that offers a healthy work-life balance, a friendly company culture, and engagement with a supportive community? 

We’ll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow.  We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities. 

People are our greatest asset, and we offer a competitive package to retain and attract the best talent.  

Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.  

Amentum is proud to be an Equal Opportunity Employer, please refer to our Enterprise Agreement and www.fairwork.gov.au for more information. 

About the Role:
An opportunity exists for an experienced Modelling and Operational Analysis Simulation System (MOASS) Specialist to support the accreditation, operation, and sustainment of a critical Defence simulation capability.

Working under limited direction, the successful candidate will undertake complex and specialised technical tasks to enable the Commonwealth of Australia (CoA) to grant Authority to Operate (ATO) for the Modelling and Operational Analysis Simulation System (MOASS) at required security levels.

This role will also provide interim system maintenance and administration support prior to full accreditation, ensuring MOASS is available and reliable for Defence Training, Test and Development (TTD) activities.
The position requires regular engagement with stakeholders at all levels and acting as a primary point of contact for system and accreditation enquiries.

What’s Involved:

• Delivering MOASS security accreditation and Authorisation activities, including preparation of ATO documentation in consultation with the approving Delegate, in accordance with the ISM, SAPMAN, and the system Concept of Operations.
• Providing simulation system, software and network technical support for complex engineering environments, including software development and scripting (including LUA) to deliver bespoke analytical tools and rapid‑turnaround modelling outcomes.
• Establishing, documenting and maintaining MOASS system configurations, baselines, technical procedures and security controls, along with user account management, system documentation and databases.
• Designing, implementing and supporting system changes, upgrades and sustainment activities (including patches, service packs and security configuration) in consultation with security authorities.
• Monitoring system performance, capacity and reliability, managing obsolescence, and supporting ongoing ICT security accreditation to ensure MOASS availability and compliance.

Who we’re Looking For:
You are a highly capable technical specialist with experience operating in secure, regulated ICT environments, able to work independently on complex systems. You bring strong stakeholder engagement skills and can communicate effectively with both technical and non‑technical audiences.

Experience supporting system accreditation, sustainment and operational use within Defence or government environments will be highly regarded.

You’ll Need:

• Top Secret – Positive Vetting (TSPV) security clearance
• Eligibility to work as DISP Level 3/4 personnel
• Demonstrated experience with programming and scripting languages, including LUA
• Experience supporting secure ICT systems and working within security accreditation frameworks (e.g. ISM, SAPMAN)
• Strong analytical capability and problem‑solving skills, with the ability to prioritise effectively in complex operational environments.

Required Security Clearance Level: TSPV
Location: RAAF Base Williamtown 
Weekly Hours: 40 Hours (Monday-Friday)

Compensation Details:

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:

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.