Transmission Core Technical Specialist, Carrier Ethernet

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions.

The Transmission Core Technical Specialist Carrier Ethernet plays a critical role in ensuring the high performance, availability, and reliability of the Optus Network by performing key operational processes and providing technical governance across change, problem, and incident management. The role is essential to maintaining an outstanding customer experience and includes oversight of service assurance activities delivered by suppliers.

Operating within a Tier 2 Network Operations team, the specialist provides 24x7 support on a rotating roster based in Network Operations Centre in Macquarie Park. In addition to resolving complex technical issues and mentoring less experienced team members, the role requires strong collaboration with managed service providers, equipment vendors, and internal engineering teams to support the implementation of network strategies, solution onboarding, and ongoing operational improvements.

• Location: 100% on site at Macquarie Park, Sydney
• Work Pattern: Rotating shift roster, including morning, afternoon and night

The day to day

• Rapidly resolve complex faults escalated beyond the Managed Service to minimise customer impact and manage critical incident escalations from Service Assurance Managers.
• Lead Problem Management activities including root cause analysis, corrective action implementation, and coordination with suppliers and vendors to address recurring network issues.
• Protect revenue and improve customer experience by reducing fault rates and improving the reliability of the Transport network.
• Contribute to network expansion, upgrades, and introduction of new technologies/products by advising on design improvements and providing approvals aligned with service quality standards.
• Guide business partners on Optus architecture and ensure supportability of new solutions, participating as a Subject Matter Expert in Change Advisory Board (CAB) reviews.
• Analyse network performance data, support automation initiatives, and drive service improvements through alarm tuning, event correlation, and input to tools strategy.
• Manage technical training, security access certification, and collaborate on continuous improvement initiatives with Engineering, Vendors, and Managed Service Suppliers.

Your Skills To Pay The Bills

• Relevant professional qualifications in Engineering, Telecommunications, or a related Science field.
• Extensive hands-on experience in maintaining and troubleshooting multi-vendor IP and/or Carrier Ethernet networks (Nokia, Cisco, Huawei) in a Tier1 or Tier2 environment
• Deep technical knowledge of IP and/or Carrier Ethernet network protocols and technologies including BGP, OSPF, IS-IS, MPLS, LDP, Segment Routing, and related control/data plane mechanisms.
• Solid understanding of Layer 2 services (VPLS, Epipe, etc.) and Layer 3 services (L3VPN, EVPN), along with Quality of Service (QoS) mechanisms.
• Experience with network automation tools such as Python and Ansible is highly desirable
• Vendor certifications (e.g., CCNP, NRS II) are desirable
• Demonstrable experience supporting multi-vendor technologies in high-paced operational settings, including incident resolution and escalation.
• Excellent problem-solving and communication skills, with the ability to collaborate effectively across technical teams and non-technical business partners.

Perks we love at Optus

• Supportive team and office environment, with 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
• Inclusive carer neutral paid Parental Leave of up to 16 weeks
• Competitive leave including 2 'Connected Leave' days
• 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.

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 or call 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