Key Responsibilities Lead the detection and triage of threats within defence networks. Harden systems and services against intrusion using best-practice security models. Write automation scripts (Bash/Python) for response playbooks and compliance. Deploy and maintain firewall configurations across hybrid environments. Perform forensic log analysis and vulnerability assessments. Ensure environments remain compliant with ACSC Essential Eight and NIST. Core Linux Skills Deep command-line expertise (grep, awk, sed, tcpdump). Secure configuration of services and logging systems. Firewall lockdown and secure rule creation. Automated patch deployment across multiple workloads. What You Will Bring NV1 clearance (active or previously held). Strong Linux administration and hardening background. Familiarity with SIEM and EDR tools (Splunk, Vision One). Proficiency in Bash and Python scripting. Experience working under defence or regulated frameworks. Desirable certifications: OSCP, GCFA, GCIH, Security. Why This Job? Based in Newcastle, this role gives you a pathway into Australia’s defence and critical infrastructure programs. You’ll harden systems against advanced threats while building long-term expertise in classified environments.
