Senior Cyber Security Specialist

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 a Senior Cyber Security Specialist to help establish a strong working partnership with two agencies.  

Supporting critical federal government accounts and enterprise clients, you'll work on cyber operations and safeguard systems in line with the Australian 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: 

• 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: 

• 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

• 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 it’s really like to work at Optus? Search #OptusLife on LinkedIn to go behind the scenes!

At Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences. We are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander. We also want to do our best to make our recruitment process inclusive. If you require any adjustments or accessibility support to participate fairly and equitably in the recruitment process, please email AccessibleRecruitment@optus.com.au or call 1800 309 170. We're here to help. When you contact us, please advise your preferred method of contact and we will be in touch within 48 hours.

For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity.