
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, LNIC ensures Army capability investments are digitally integrated and aligned to approved interfaces, standards, and operational requirements.
An opportunity exists for an experienced LCSSE System Administrator / Communications Network Engineering Advanced Practitioner (Level 3) to join the LNIC team supporting the ongoing design, implementation, administration, and sustainment of complex physical and virtualised network environments.
This is a highly technical, hands-on role responsible for supporting and maintaining a secure networked compute and storage environment spanning multiple physical and virtual tenancies. You will assist with infrastructure management, systems administration, security compliance activities, configuration and change management, infrastructure upgrades, and support to Army units, project teams, and industry partners operating within the LCSSE.
Working within a small, specialist team, you will contribute to the delivery and sustainment of Defence digital integration capabilities across the Land domain, supporting experimentation, trials, exercises, and capability development activities within Joint and Coalition environments.
Key responsibilities include:
This role is primarily based onsite at the LNIC facility in Symonston ACT, with some interstate and occasional international travel supporting exercises, trials, and coalition engagement activities.
You are an experienced Systems Administrator, Infrastructure Engineer, or Communications Network Engineering professional with extensive experience operating within complex Defence or Government ICT environments. You possess strong hands-on technical capability across virtualised infrastructure, enterprise systems administration, networking, automation, and security compliance, with the ability to operate effectively in highly integrated and security-focused environments.
You thrive in technically complex environments and are comfortable working across physical and virtual infrastructure, supporting both operational and development/testing environments. You bring strong troubleshooting and analytical skills, an automation mindset, and the ability to communicate effectively with both technical and non-technical stakeholders.
To be successful in this role, you will demonstrate experience across many of the following areas:
Desirable experience includes:
Candidates with extensive Defence experience, strong infrastructure automation capability, and experience supporting 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.