Join a reputable organisation committed to innovation and excellence in the defence and technology sectors. They are seeking a knowledgeable and experienced Senior Network Security Engineer to support national security operations in Melbourne, VIC. This is a full-time, onsite role that offers an exciting opportunity to lead a small security team in developing and managing extensive network security infrastructure. The position is permanent and based entirely onsite, supporting critical security functions within a dynamic environment.
Required Skills:
- Extensive experience (5+ years) in network security engineering, including deployment and operation of firewalls, VPNs, IDS/IPS, and security appliances.
- Proven track record leading technical teams, mentoring junior engineers, and managing performance.
- Hands-on proficiency configuring network security devices and security software such as Splunk, Rapid7, Tanium, Cisco solutions, and others.
- Strong knowledge of security standards, compliance frameworks, and enterprise security architecture.
- Ability to develop detailed technical documentation and communicate complex concepts clearly.
- Demonstrated problem-solving skills and a proactive, self-starter attitude.
- Solid understanding of security policies, controls, and compliance, including Australian Signals Directorate (ASD) guidelines, NIST, and client-specific policies.
- Certifications like CompTIA Security+, Network+, CCNA, CISSP.
- Previous experience working with Airservices Australia or similar government/defense entities.
- Familiarity with cloud security solutions and application security practices.
- Experience with Australian Defence security clearance processes.
- Knowledge of virtualizations, load balancing, and advanced threat detection tools.
- Bachelor’s Degree in Computer Science, IT Systems, or related field (Master’s preferred).
- 6+ years in network security roles
- Prior experience in telecommunications or government sectors is a plus.
- Ability to obtain and maintain Australian Defence security clearance at NV1 level.
- This position is performed 100% onsite in Melbourne.
- Flexibility to work various shifts if required.
Peoplebank and Leaders IT are committed to creating a diverse and inclusive workplace where everyone belongs. We welcome applications from people of all backgrounds, identities, and experiences. If you need adjustments to the recruitment process due to your circumstances, please let us know—we’re here to support you.












