Infrastructure Tools Specialist

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions. As Infrastructure Tools Specialist based out of either Sydney or Canberra, you’ll play a key role in delivering managed services and technical support across our clients’ complex infrastructure environments. This includes supporting network automation and monitoring platforms, ensuring high availability, and working collaboratively with internal teams and vendors. Your work will directly contribute to the stability, security, and performance of mission‑critical systems. This role leads out ITIL practices and requires technical in‑depth knowledge and experience with Linux, AD/DNS/DHCP, Splunk, SDA, DNAC – Catalyst Centre as well as expert level capability and experience with multiple monitoring and tooling platforms like Stat seeker, NetScout, Cisco ISE, TACACS, WINNER & Infoblox. Your Day‑to‑Day Support change control, release management and process improvement Collaborate with internal teams and external vendors to ensure service delivery outcomes Act as an escalation point for more complex tasks or troubleshooting from other support and project teams Support security engineering activities including vulnerability assessments and SIEM platforms (e.g. Splunk) Maintain technical documentation to a high standard reflecting accurate and up to date details about monitoring and tooling platforms Conduct auditing and technical uplift tasks to ensure compliance with all relevant standards and client requirements Undertake pro‑active maintenance activity to ensure vulnerability remediation and version control for all supported systems Complete project tasks requiring input, integration or specialisation with Tools and Monitoring systems Participate in after‑hours work for planned changes, and on‑call/call‑out roster What We’re Looking For Expertise in systems/network administration (Linux, AD, DNS, DHCP). Networking knowledge with CCNA certification or above Experience with advanced routing technologies SDA, DNAC – Catalyst Centre as well Expert level capability and experience with multiple monitoring and tooling platforms like Stat seeker, NetScout, Cisco ISE, TACACS, WINNER & Infoblox Strong working knowledge of security operations and tools (e.g. Splunk, SIEM, vulnerability management) Problem‑solving mindset and ability to work calmly under pressure Strong communication skills and ability to collaborate across technical and non‑technical teams A proven capability for learning and a willingness to contribute to continuous service improvement Australian Citizenship with Baseline or NV1 security clearance 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. 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’re committed to ensuring that our recruitment process provides equal employment opportunities to all job seekers – including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, members of the LGBTQIA+ community, veterans, and Aboriginal and/or Torres Strait Islander peoples. If you require adjustments or accessibility support , please contact us at or call . Please advise your preferred method of contact and we will be in touch within 48 hours. For more information, visit: #J-18808-Ljbffr