Senior Security Systems Engineer

At Centorrino Technologies (CT), a community that goes beyond expectations, we recognize the value of security in our professional services. We are seeking a Senior Security Systems Engineer to join our team in VIC, NSW, or ACT. This role specializes in advising, designing, implementing, and remediating security controls for Australian Government systems, supporting Government entities to meet security standards and enhance cyber resilience. Responsibilities Provide expert advice and hands‑on technical support to multiple Australian Government entities, strengthening security controls across diverse system environments. Design, implement, and remediate security solutions in alignment with ASD's ISM, the Essential Eight, and other industry cyber security standards. Develop and maintain technical documentation, including SOPs, change requests, design documents, and as‑built/as‑configured records. Participate in and lead technical workshops focused on security engineering design, implementation, and remediation activities. Develop and test prototype security configurations to support guidance and uplift activities. Contribute to strategic security uplift initiatives across Microsoft, Linux/Unix, cloud, networking, and enterprise environments. Support alignment of operational tasks with organisational goals, ensuring work programs contribute to broader Defence and ASD objectives. Provide direction and clarity to team members, outlining work priorities, expected outcomes, and alignment with strategic objectives. Work effectively in onsite, hybrid, or remote settings while maintaining high levels of independence and accountability. Essential Qualifications Minimum 7 years’ experience as a Systems Engineer, with capability across one or more of the following: Microsoft Active Directory, Networking (gateway or software‑defined networking), Cross‑Domain Solutions and data diodes, Sentinel or Splunk, Enterprise Linux/Unix (e.g., RHEL), Cloud platforms (Azure, AWS, GCP, SaaS/PaaS/IaaS), Complex Windows enterprise environments. Proven ability to work independently and collaboratively across hybrid or remote teams. Strong written and verbal communication skills, including experience producing technical documentation, reports, and executive‑level briefings. Ability to provide leadership and direction to others, clearly articulating the purpose and importance of assigned tasks. Demonstrated capacity to link operational work to larger organisational goals and security uplift outcomes. Experience setting work tasks for others, aligning priorities with strategic objectives, and communicating expected deliverables. Desired Qualifications Bachelor’s degree in Information Technology or equivalent industry certifications. Demonstrated experience identifying, implementing, and applying cyber security controls. Ability to obtain or hold NV2 or TSPV security clearance (mandatory for the role). Willingness to undergo ASD's Organisational Suitability Assessment (OSA). Benefits Hybrid working (for majority of roles) with team anchor days to support collaboration. Extensive training and development opportunities that enable continual growth as part of your career planning. Extensive discounts and benefits to maximise your money. A choice of your IT equipment to maximise your success and access to cost‑price tech for your personal needs. Fun team events to celebrate achievements and connect with colleagues outside work as part of our engaging culture. NV2 security clearance is a mandatory requirement for this role. A valid Vulnerable People / Working with Children Check (WWCC) and Police Check are also required. We celebrate diversity and enable every voice to be heard as we drive to create the world we want. Apply today to join a team that values innovation, inclusivity, and diverse backgrounds. #J-18808-Ljbffr