Security Operations Centre Specialist

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions. Step into a critical role at the forefront of protecting our enterprise and client environments as a Security Operations Centre Specialist . In this hands‑on technical position, you’ll play a key part in delivering industry‑leading security monitoring, threat detection, and operational support across a diverse range of security technologies and environments. You’ll bring strong expertise across multiple security domains, with deep experience managing and optimising SIEM platforms such as Splunk, DEVO, QRadar, or Microsoft Sentinel . Working closely with internal teams and key stakeholders, you’ll analyse emerging threats, configuration changes, and contribute valuable insights that shape security decisions and outcomes. As part of our Technical Operations group, you’ll support ICT services for a wide client base, including environments spanning local and international data centres. If you’re a technically driven security specialist who thrives in a dynamic operational environment, this role offers the opportunity to make meaningful impact across complex enterprise security landscapes. Two positions are available, 1 x Permanent and, 1 x 12-month Fixed Term position. What You will Do Manage and optimise SIEM technologies (especially Splunk ), including logging, monitoring, triage, alert investigation, and reporting. Develop and tune Splunk use cases, dashboards, and detection content to enhance threat visibility. Perform security analysis across incident classification, investigation, and remediation using a range of security tools (e.g., Tenable, endpoint protection, IDS/IPS). Support day‑to‑day security operations across cloud and on‑prem environments, including AWS, Azure, or Google Cloud Platform. Apply industry security frameworks such as NIST, PSPF, and the Australian ISM to operational activities and incident handling. Manage and optimise Web Proxy technologies such as: Zscaler, Netskope and Bluecoat Proxy. Produce high‑quality security documentation, reports, and operational procedures. Provide technical input into project engagements and delivery activities related to security operations. Analyse security data to identify trends, insights, and improvements, and support external and client audits as needed. What makes you perfect for the role Hands on experience working with security platforms from vendor such as Cisco, PaloAlto Networks, Check Point etc. Experience managing Endpoint Detection and Response (EDR) platforms from vendors such TrendMicro, Microsoft, and SentinalOne . Advanced experience with SIEM platforms—particularly Splunk—including monitoring, triage, alert analysis, and reporting. Strong capability in creating and tuning Splunk use cases, dashboards, and detection logic. Hands‑on experience in security operations using tools such as Tenable, endpoint protection platforms, and IDS/IPS technologies. Proven skills in security incident analysis, including classification, investigation, and remediation. Solid understanding of cloud security operations across AWS, Azure, or Google Cloud Platform . Working knowledge of security frameworks such as NIST, PSPF, and the Australian ISM. Ability to analyse complex data sets to identify trends, anomalies, and actionable insights. Experience supporting audits and producing clear, high‑quality security documentation. 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. Flexible working arrangements with opportunities to work three days in the office, two days remote or home. Vibrant and collaborative office campus that includes cafes, convenience store, chill out zones, GP, post office, gym and on-site childcare centre. 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 [email protected] 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