Our client is a central Australian Government authority operating at the forefront of national cyber security and intelligence. Working within the Defence portfolio, the organisation plays a critical role in protecting Australia from global cyber threats and advancing national interests through technical excellence and operational capability.
This is an opportunity to work in a highly secure, mission‑focused environment where cutting‑edge technology, collaboration and integrity are core to delivering outcomes of national significance.
About the role
We are seeking an experienced Lead Network Security Engineer to support the operation, maintenance and uplift of critical network infrastructure within a highly secure environment based in Canberra.
This is a hands‑on technical leadership role where you will guide network security practices while actively contributing to the design, assessment and protection of complex network environments across both physical and virtual platforms.
Key responsibilities include:
- Leading the planning, implementation and operation of secure network services and systems
- Operating, maintaining and uplifting critical network infrastructure
- Assessing complex information systems using contemporary security frameworks and toolsets
- Reviewing network architectures and device configurations and providing improvement recommendations
- Applying defence‑in‑depth principles to network design and security configuration
- Providing specialist advice on hardening systems against advanced and emerging threats
- Collaborating closely with technical teams and mentoring less experienced engineers
The successful candidate
You will be a highly capable network security professional with strong technical depth and the confidence to lead in complex, high‑assurance environments.
You will demonstrate:
- 5+ years’ experience in a cyber security or network security role
- Proven experience implementing, maintaining and improving network security practices
- Strong hands‑on experience with network protection technologies (firewalls, routers, servers)
- Demonstrated ability to assess network security architectures and make practical recommendations
- Experience securing network communications within complex environments
- Strong knowledge of networking concepts, protocols and security methodologies
- Ability to communicate technical concepts clearly to both technical and non‑technical stakeholders
Why partner with Whizdom?
We’re Whizdom. We view you as an extension of our strong, dependable brand and have differentiators which really are different! The Whizdom way:
- We pay our contractors same day you submit your timesheet!
- We are Level 3, DISP certified and have signed the Veteran Employment Commitment and been awarded the highest level of compliance to this important initiative, proactively assisting veterans transitioning from the forces to civilian roles. We’ve been lucky enough to win industry awards for our high level of process compliance and are ISO 9001 certified. Our commitment to reducing Greenhouse Gas Emissions has been accredited in line with large global organisations.
- We value diversity and welcome applications from Indigenous Australians, people from diverse cultural and linguistic backgrounds and people living with a disability.
Location: The role is based in Canberra ACT.
Contract terms: 12 months from commencement date, plus potential extensions
Security Requirements: Must be an Australian Citizens with a minimum Negative Vetting 1 (NV1) Security Clearance to be considered. An OSA(Organisational Suitability Assessment) will be required for this position.
How to Apply: Please upload your resume to apply. Please note you will need to complete selection criteria to complete this application process. We will be in touch with instructions for suitably skilled candidates.
Candidates will need to be willing to undergo pre-employment screening checks which may include, ID and work rights, security clearance verification and any other client requested checks.
Applications open until 8am 03 Febuary 2026.
Reach Damien on 0480 002 503 or damienm@whizdom.com.au for any further information.
