Cyber Security Lead

Every day, millions of Australians connect, work, stream, and stay in touch on the Optus network. When it works seamlessly, it's easy to take for granted. But behind it is a team making thousands of decisions every day - decisions that keep people, businesses and communities connected. 

Right now, Optus is passionate about getting the fundamentals right - simplifying how we work, lifting standards, and building a more reliable, resilient experience for our customers. It's not about surface-level change. It's about how we make decisions, how we work together, and how we deliver. 

The Cyber Security Lead is responsible for delivering and managing cyber security services for Optus Enterprise and Business clients, including security architecture, engineering, monitoring, risk management, and compliance activities. The role requires strong expertise across multiple security domains, client engagement, and modern security technologies, including AI and machine learning, while working closely with stakeholders to design, implement, and continuously improve security solutions and controls 

Your day to day will consist of 

• Lead day-to-day security operations, engineering, monitoring, and administration across enterprise security platforms and tools.  

• Evaluate, implement, and optimise emerging security technologies, including AI-enabled capabilities, to enhance detection, response, and compliance outcomes.  

• Maintain and improve security controls, vulnerability management, threat detection, policy compliance, and client security reporting.  

• Conduct security risk and threat assessments, develop security standards and procedures, and drive remediation activities with stakeholders.  

• Lead end-to-end incident response, including investigation, containment, recovery, post-incident reviews, and continuous improvement of response playbooks.  

• Coordinate security activities across clients and delivery teams, manage compliance obligations (ISO 27001, ISO 20000, SOC 2), and provide threat intelligence advisories. 

What makes you perfect for the role 

• Strong hands-on experience with enterprise security technologies including SIEM, IDS/IPS, Endpoint Protection, Vulnerability Management, and IAM platforms.  

• Proven expertise in security incident response, covering the full lifecycle from detection and triage through to recovery and post-incident reviews.  

• Experience developing security processes, procedures, incident response playbooks, escalation pathways, and operational documentation.  

• Knowledge of AI/ML-driven security capabilities, automation, and analytics to enhance threat detection, investigation, and reporting outcomes.  

• Demonstrated ability to support project delivery, client engagements, audits, risk assessments, and security solution evaluations.  

• Strong analytical, problem-solving, and stakeholder management skills, with the ability to perform effectively in fast-paced environments.  

• 3-5+ years of security operations experience, preferably supported by scripting skills (Python/PowerShell), security certifications (CISSP, CISM, CRISC), and familiarity with ISO 27001, SOC 2, and regulatory frameworks. 

What's in it for you? 

• Competitive remuneration and employee discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and unique shopping discounts with our retail partners. 

• Competitive leave policies, including additional 'Connected' days to focus on culture, family, health, community, or whatever's important to you. 

• We support growing families with inclusive, carer-neutral paid Parental Leave of up to 16 weeks. 

• Direct your own development and build future-ready skills with Optus U's industry-focused micro-credentials, developed with La Trobe and Macquarie Universities. 

• Build meaningful connections through employee-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network and Express Yourself (LGBTQIA+). 

• Put your wellbeing first with free access to counselling and support services, 24/7 — in-person, by phone, SMS, or video. 

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 18•• ••• 170. We're here to help. 

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