Amentum is continually expanding our opportunities working on prominent Defence projects across air, land and sea supporting the critical capabilities that keep Australia safe. We have a growing presence in cyber, space and nuclear programs. Tell me about this role: We are currently looking for an NV1 security cleared IRAP Assessor to join our team on a permanent basis. You will lead Architectural Reviews and provide strategic guidance on Secure-by-Design compliance, cyberworthiness, and system accreditation. You will be required to independently evaluate ICT systems against the Information Security Manual (ISM). You would not certify systems but provide trusted advice to inform agency risk decisions. This role offers uncapped training and development opportunities as well as other benefits including subsidised parking, flexible working and different leave arrangements including paid parental, study, reserve and volunteer leave. What will I be doing day to day? Conduct IRAP assessments for classified or sensitive Defence systems Lead Secure-by-Design architectural reviews and risk assessments Provide SME advice to support CoA decision-making and initiatives Execute Assessment & Authorisation (A&A) activities and develop PoAMs Audit engineering designs and processes for cyberworthiness Engage with Defence stakeholders (RAAF, DSTG, BAE) and security bodies (ASD, ASIO, DCIAB) Develop Decision Briefs (DB), Technical Scoping Briefs (TSB), and Contract Change Proposals (CCP) Represent CoA interests in vendor, contractor, and customer engagements What sort of skills do I need? Essential experience with Defence environments IRAP Assessor certification (ASD-endorsed) Demonstrated experience with IRAP assessments for classified/sensitive Defence systems Strong knowledge of ISM, PSPF, DSPF, and cyberworthiness frameworks Process orientated with good attention to detail Australian citizenship, NV1 clearance, ITAR Compliance What’s in it for me? Flexibility - We like our employees to have the flexibility they need to live the lives they choose. With flexible working options such as remote working where possible. Inclusion - Our employees should feel safe bringing their whole self to work, we offer a number of programs promoting inclusion. Benefits and Rewards – Our benefits and rewards includes additional superannuation; flexible leave options; salary continuation insurance; professional certification bonus; employee discount program. Amentum: Trusted Partner in National Security Amentum is a key service provider to the Australian Government, supporting critical national security and Defence capabilities across land, air, maritime, cyber, space, nuclear, and digital domains. With over 880 professionals nationwide, we deliver complex infrastructure, logistics, and technical solutions with a strong focus on quality, safety, and innovation. With 27 years of experience and a presence in major cities and regions, we’re proud of our people—our greatest asset. Join us and be part of a high-performing team with exceptional benefits and career opportunities. Apply directly or reach out to Jeremy Parkinson, jeremy.parkinson@global.amentum.com.