Transmission Core Technical Specialist, DWDM

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, DWDM plays a pivotal role in ensuring the high performance of the Optus Network by completing key operational processes and providing technical governance across change, problem, and network experience 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 technical difficulties 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

Your day to day will consist of

• Rapidly resolve complex faults raised beyond the Managed Service to minimise customer impact and manage 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 domain 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.

What makes you perfect for the role?

• Relevant professional qualifications in Engineering, Telecommunications, or a related Science field.
• Extensive hands-on experience in maintaining and troubleshooting multi-vendor Long-Haul and Metro DWDM networks (Nokia, Infinera, Huawei) in a Tier1 or Tier2 environment
• Solid understanding of DWDM technologies including ROADM, TOADM, Optical Amplifiers
• 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.

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.
• 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.
• Free Optus bus from Macquarie University Metro Station (every 6-8 minutes); morning and afternoon.

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