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. The role entails complex and specialised technical tasks to enable the Commonwealth of Australia (CoA) to grant Authority to Operate (ATO) for MOASS at required security levels. It also includes interim system maintenance and administration support to ensure MOASS is available and reliable for Defence Training, Test, and Development (TTD) activities. The position requires regular engagement with stakeholders and serves as the primary point of contact for system and accreditation enquiries.
What's Involved
Deliver 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.
Provide 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.
Establish, document, and maintain MOASS system configurations, baselines, technical procedures, and security controls, along with user account management, system documentation, and databases.
Design, implement and support system changes, upgrades and sustainment activities (including patches, service packs and security configuration) in consultation with security authorities.
Monitor system performance, capacity and reliability, manage obsolescence, and support ongoing ICT security accreditation to ensure MOASS availability and compliance.
Who We're Looking For
A highly capable technical specialist with experience operating in secure, regulated ICT environments.




Strong stakeholder engagement skills and ability to communicate effectively with both technical and non‐technical audiences.
Experience supporting system accreditation, sustainment and operational use within Defence or government environments is 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
Top Secret – Positive Vetting (TSPV)
Location
RAAF Base Williamtown
Weekly Hours
40 hours (Monday-Friday)
Compensation
Aud. 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
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
Equal Opportunity Employer
Amentum is a proud equal‐chance employer and is committed to providing equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy, age, ancestry, 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 for the essential functions of the job.
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📌 Modelling And Operational Analysis Simulation System (New South Wales)
🏢 PAE Government Services
📍 New South Wales