Senior Network Engineer - Fixed Voice

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

The Senior Network Engineer – Fixed Voice Engineering is a hands-on technical role responsible for network design and delivery of Fixed Voice Core solutions.

The successful candidate will be acting as a technical input for assigned initiatives, this role develops network design activities from initial scoping through to implementation in the production environment.

Your day to day will consist of

• Lead technical design and delivery for Fixed Voice Core network projects, covering scoping, high‑level and detailed design, testing, implementation, and operational handover.
• Produce, review, and approve high‑quality network design documentation with strong technical governance.
• Independently translate product and business requirements into effective network solution designs.
• Prepare change management documentation and perform configuration and deployment on production network devices.
• Provide Tier 3 operational support, including fault resolution, maintenance, and lab‑based testing and validation.
• Define and maintain Fixed Voice Core network standards, processes, and best practices, contributing to automation and innovation initiatives.
• Act as a trusted technical expert, engaging internal stakeholders and vendors and delivering clear technical communication across the organisation.

What makes you perfect for the role

• Minimum 6 years’ telecommunications experience, including at least 2 years in a senior Fixed Voice network design role across Fixed Voice environments.
• Strong knowledge of Fixed Voice protocols and technologies including SIP, SDP, RTP, TDM, and INAP, with hands‑on experience in TDM and SIP networks.
• Proven experience designing and implementing Fixed Voice Core architectures and solutions.
• Hands‑on experience with network testing tools, methodologies, monitoring, and management platforms, with sound understanding of API integration.
• Familiarity with Ribbon Fixed Voice solutions (C20/CS2K, SBC, PSX) and automation tools such as Ansible and GitLab pipelines is desirable.
• Excellent documentation, communication, and stakeholder engagement skills, with the ability to work autonomously within Optus network standards and operating procedures.

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.
• 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 AccessibleRecruitment@optus.com.au or call 1800 309 170. We're here to help.

For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity