Date: 1 Jul 2026
Location: Macquarie Park, Australia
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Company: Singtel Group
Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions.
The Principal is responsible for delivering end-to-end Core Network design, configuration, performance and automation outcomes across service chains, ensuring alignment to defined design intent, operational requirements and automation guardrails.
The role operates across Core domains including Packet Core, Voice/IMS, Policy & Charging, Signalling, Subscriber Management, Network Exposure and Telco Cloud, translating system-level direction into practical engineering outcomes.
What You'll Do
Deliver and optimise core network design, configuration, and automation across service chains, ensuring alignment with overall E2E design intent.
Maintain standardised interfaces, parameters, and configurations across domains, systems, and vendors.
Analyse cross-domain performance and implement tuning and automation to improve throughput, latency, availability, and utilisation.
Define and track E2E KPIs and use operational insights, incidents, and trends to drive continuous optimisation.
Align engineering, architecture, and operations, resolve conflicts, and ensure smooth integration of new capabilities and vendor solutions.
Implement controlled, policy-driven automation with guardrails, ensuring safe execution, effective triggers, and reliable recovery mechanisms.
Embed resilience, risk management, and design-for-operations principles, leveraging operational KPIs and incident learnings to improve service stability and recovery.
What You Bring
Strong technical expertise in one or more Core Network domains, with working knowledge across adjacent domains
15+years experience in automation/cloud-native/cross domain optimisation.
Experience in network configuration, parameter tuning and performance optimisation
Hands-on experience with automation, scripting or orchestration tools
Understanding of Core Network KPIs and operational performance drivers
Ability to translate design intent into practical engineering and configuration outcomes
Experience working in complex, multi-vendor, integrated environments
Strong problem-solving skills with ability to identify and resolve cross-domain issues
Ability to work effectively across engineering and operations
The good stuff…
Competitive remuneration and colleague discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and outstanding shopping discounts with our retail partners.
Flexible working arrangements with opportunities to work three days in the office, two days remote or home.
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.
Build meaningful connections through colleague-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
[email protected] or call 1800 309 170.
For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity
