Cyber Security Engineer As Principal Cybersecurity Engineer, you will lead the design, implementation and oversight of cybersecurity architecture for defence grade systems across networks, platforms and on-premise environments. You will work across engineering and operations teams to ensure the integrity, compliance and resilience of secure systems in accordance with Australian standards and mission critical needs. You will be instrumental in securing and maintaining an Authority to Operate (ATO) by implementing technical controls, conducting risk assessments and ensuring compliance with the Australian ISM and other defence frameworks. Key Responsibilities Define and enforce cybersecurity standards in alignment with NIST, ISO/IEC27001 and the Essential Eight Support the preparation and submission of cybersecurity artefacts required for ATO processes, including security documentation, risk registers and evidence packages Implement and validate technical security controls in classified environments aligned with Australian ISM requirements Design and manage automation pipelines (eg: Ansible, Terraform, Packer) to secure deployment and remediation processes Develop and deploy security tools to address vulnerabilities, automate tasks and strengthen defences Conduct comprehensive risk assessments, penetration testing, vulnerability testing and security audits Monitor and analyse logs and security events to detect, assess and respond to threats Collaborate with engineering teams to implement secure authentication, encryption and access control solutions Evaluate and integrate emerging cybersecurity technologies to enhance infrastructure protection Clearly articulate security strategies and collaborate with cross-functional teams to support secure solution delivery Provide expert level troubleshooting and resolution of complex security challenges About You Minimum 6+ years of cybersecurity experience, preferably in defence, government or critical infrastructure sectors Relevant tertiary qualification or equivalent knowledge gained through experience CISSP certification (or equivalent), plus Government recognised cybersecurity credentials Strong expertise in Linux and Windows systems, networking security and cloud platforms (AWS, Azure, GCP) Hands on experience with security automation tools such as Ansible, Terraform and Packer Proficiency in Java; scripting skills in Python or Ruby highly regarded Demonstrated ability to lead cybersecurity initiatives, influence architecture decisions and communicate effectively with stakeholders You must also be an Australian citizen, with an Australian Government NV2 security clearance. 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. #J-18808-Ljbffr