Senior Infrastructure Tools Specialist

Overview

Senior 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 government clients’ complex technology 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.

Your Day-to-Day

- Monitor, maintain and support our clients’ critical network and security toolsets and platforms.

- Provide triage, incident management and access control within an ITIL-based environment.

- 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 incidents 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 as related platforms.

- Expert level capability and experience with multiple monitoring and tooling platforms like StatSeeker, 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?

- Standard business hours (Mon–Fri, 38-hour week) with a hybrid arrangement: 3 days in office, 2 from home.

- Accessible employer with wheelchair access.

- 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’.

- 25% monthly service discount and $80 monthly bill rebate plus additional benefits to over 400 retailers Australia-wide.

- 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.

- 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 value diversity. 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 AccessibleRecruitment@optus.com.au or call 1800 309 170. Please advise your preferred method of contact and we will be in touch within 48 hours. For more information, visit: https://www.optus.com.au/about/inclusion-diversity

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