Senior Cyber Security Specialist Drive connections that matter in every moment. Optus is more than just a telco : we're the team of passionate and supportive people defining the future of service excellence, one extraordinary customer experience at a time. Every day our team of 6,000+ passionate people embrace a 'yes' mindset, ensuring Australians enjoy closer friendships, stronger teams, deeper partnerships, and bigger breakthroughs. Here, you'll find a community that flourishes by challenging themselves and changing the game. A place where you can build strong networks and long:lasting relationships, powered by lively collaboration, unwavering support, high flexibility, and a healthy dose of daily optimism. At Optus, we don't just keep Australia connected-we're building a safer, smarter digital future. We're at the forefront of secure service delivery across government and industry. As a result of an exciting new government contract, we are looking for aSenior Cyber Security Specialist to help establish a strong working partnership with two agencies. Supporting critical federal government accounts and enterprise clients, youll work on cyber operations and safeguard systems in line with theAustralian Government's Information Security Manual (ISM) - setting the gold standard for everything we do. Whether it's ensuring compliance, optimising defences, or coordinating response activities, you'll help deliver security outcomes that truly matter. The Day to day: typedisc: : Take charge of cyber operations using advanced security technologies and tools : Deliver threat assessments, vulnerability scans, policy compliance reviews, and tailored reporting : problem solve across secure environments : Design and document secure configurations with remediation actions that align with ISM controls : Drive security governance and support the development of policy and procedures with ISM as the foundational framework, alongside standards like ISO 27001 and SOC2 : Collaborate closely with delivery teams, government clients, and internal stakeholders to ensure secure, compliant service delivery : Track operational performance and compliance metrics to ensure continuous improvement Your skills: typedisc: : Deep technical capability and a consultative approach to risk and security : Strong knowledge and hands:on experience implementing and aligning with Fed Gov ISM controls : Proven success operating in complex, multi:stakeholder environments-especially across government contracts : Proficiency with security platforms such as Tenable, Splunk, endpoint protection tools, proxies, IDS/IPS, and vulnerability management : Familiarity with security frameworks such as NIST, and compliance with ISM as a top priority, supported by ISO 27001 and SOC2 understanding : Data analysis and Python scripting capabilities are a plus : Relevant certifications like CISM, CRISC, CSTSP, or CEH are highly regarded : Australian Citizenship and active Federal Government security clearance (Baseline or NV1) are essential Perks we love at Optus typedisc: : 3 days in the office, 2 days remote : with flexible hours to suit : Inclusive paid parental leave, up to 16 weeks for the primary care giver : All Optus employees have access to resources, webinars and support via the 'Parents at Work portal' : Own your own growth by accessing an extensive online and facilitator led learning catalogue. : Connect at work through our employee:led volunteer groups: Culture Connect, Elevate Women, Disability Network, Express Yourself (LGBTQIA+), United Veterans, Yarn Network, Wellbeing Network and Young Professionals. : Vibrant campus life, variety of facilities including restaurants, cafes, gymnasium, GP, and post office (Sydney Campus) : Free Optus bus from Macquarie University Metro Station (every 6:8 minutes); morning and afternoon Keen to see what