
IAG Defence & National Security (DNS) is part of IAG, a specialist advisory firm supporting complex infrastructure, Defence and national security programs across Australia.
Our DNS team works closely with Commonwealth agencies and industry partners to deliver specialist expertise into nationally significant programs. Our success depends on our ability to identify, engage and mobilise highly specialised talent quickly and effectively. IAG is recognised as Veteran Friendly Employer under the Veteran Employment Program.
The Land Network Integration Centre (LNIC) is responsible for advising and directing Army’s digital network integration efforts to maximise interoperability across Land, Joint and Coalition environments. Supporting the Army Operating System, the LNIC plays a critical role in ensuring land capability investments are integrated, secure, and aligned to approved interfaces, standards, and operational requirements.
As a System Security Analyst within the LNIC Security Assessment and Advice (SAA) team, you will support the assessment and authorisation of Land Mission Systems under the Defence Cyber Security Assessment and Authorisation Framework (DCSAAF). Working closely with capability managers, project teams, technical stakeholders, and Defence partners, you will provide cyber security governance, risk and compliance (GRC) advice and contribute to the delivery of security assessments across a diverse range of land systems and deployable tactical networks.
You will assist in the development and review of system security documentation, conduct security assessments, provide contextual cyber security advice, assess changes to approved system baselines, and contribute to governance, policy, and process improvement activities. The role will support systems ranging from standalone applications through to complex deployable networks interfacing with national strategic and coalition environments.
This is a unique opportunity to work within a highly specialised Defence capability environment supporting critical Army programs delivered under the Integrated Investment Program (IIP).
You are an experienced cyber security or systems security professional with a strong understanding of Defence or Government security governance frameworks and the ability to operate effectively within complex technical and stakeholder environments. You bring experience supporting security assessment, authorisation, compliance, governance, or risk activities across ICT, communications, infrastructure, or mission systems environments.
You possess strong analytical and problem-solving skills, with the ability to investigate and understand complex systems and communicate cyber security risks and recommendations clearly to both technical and non-technical stakeholders. You are comfortable working collaboratively within integrated project teams and can confidently engage with capability managers, engineers, technical specialists, and senior stakeholders.
To be successful in this role, you will demonstrate:
Candidates with Defence experience, exposure to Land Domain capability projects, or experience working within secure or classified environments will be highly regarded.
With offices in Perth, Brisbane, Melbourne, Sydney, and Canberra, we’re a tight-knit team, working across some of Australia’s most critical infrastructure and Defence projects. We come from diverse backgrounds and pride ourselves on our flexible, supportive and collaborative team culture. We can offer great work, great people, great culture, great conditions, and an all-round great time, whilst you go about developing a great career in this space.
As part of IAG, you’ll be joining a team of more than 250 professionals’ working across a range of integrated workstreams in a friendly and approachable environment.

IAG Defence and National Security (DNS) is a multidisciplinary team of Project Management, ICT, Logistics, Engineering and Commercial advisory professionals who primarily provide services to the Defence Sector, Australian Department of Defence and Defence Industry.
Thanks to the diversity of its service offerings, IAG Defence & National Security is uniquely positioned to provide its partners and clients with holistic solutions that address complex cross-subject requirements.
IAG DNS is part of the wider IAG team - Australasia’s most trusted transaction, commercial, strategic advisory, delivery and technical services firm.
IAG has assisted clients to successfully plan, transact and deliver more than $200 billion of projects across Australia and internationally. This combined experience ensures our team of specialist advisors effectively navigate complex governance frameworks, challenging stakeholders, multifaceted technical environments and regulatory intricacies to deliver value for money outcomes.
We bring a flexible, scalable team with unmatched professional diversity – a national pool of approximately 250 advisors with diverse backgrounds in law, commerce, engineering, defence, construction, environmental management and stakeholder engagement.