Senior Technical Specialist - Data Performance Engineer

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

We’re looking for a Senior Technical Specialist – Data Performance to join our Probe and Observability team in Macquarie Park, playing a critical role in monitoring, analysing, and optimising the performance of mobile and fixed data services across the Optus network.

This is a hands‑on technical role for someone who thrives on deep data analysis, proactive performance optimisation, and solving complex network challenges at scale across 4G, 5G, Fixed, IoT and Enterprise networks and services.

About the role

As a Senior Technical Specialist – Data Performance, you’ll leverage advanced probe and analytics platforms to proactively identify, troubleshoot, and resolve complex data performance issues, ensuring an exceptional customer experience.

You’ll work closely with RAN, Core, Transport, Planning and Voice Performance teams, helping drive Optus’ transformation toward a modern, data‑driven observability model.

What you’ll be doing

• Develop, implement and maintain real‑time dashboards and reports tracking end‑to‑end data performance KPIs and KQIs across RAN, EPC/5GC and Transport layers


• Monitor and analyse key data KPIs such as average user throughput, latency, packet loss and session setup success rates to quantify and improve customer experience


• Proactively identify long‑term performance bottlenecks and capacity constraints within the packet core and user plane environments


• Leverage Deep Packet Inspection (DPI) to analyse application‑layer performance, including web browsing, video streaming and gaming services


• Perform complex data tracing and correlation across multiple interfaces to identify root causes of data session failures or persistent low throughput


• Collaborate with RAN optimisation, Core engineering, Planning teams and Voice Performance Engineers to diagnose and resolve performance issues


• Support capacity planning teams through detailed analysis of traffic mix, usage patterns and resource utilisation


• Contribute to the continuous improvement of observability practices, including future network slicing performance assurance and SLA monitoring

About you

• Degree‑qualified in Telecommunications, Electrical Engineering or a related discipline


• Strong experience in data network performance, packet core optimisation or IP network assurance within an MNO environment


• In‑depth knowledge of 4G and 5G Core data planes, including protocols such as GTP‑U/C, PFCP and key user‑plane interfaces


• Solid understanding of the TCP/IP protocol stack and its impact on application performance


• Hands‑on experience with carrier‑grade monitoring and assurance tools


• Strong analytical and troubleshooting skills, with the ability to interpret large and complex network data sets


• Excellent communication skills, with the ability to translate technical insights into clear outcomes for engineering and operational stakeholders

Why you’ll love working at Optus

• Competitive remuneration and employee discounts. Make life easier (and more affordable) with $80 monthly credit, 25% off Optus products, and unique shopping discounts with our retail partners.


• Flexible working arrangements, with opportunities to work three days in the office and two days remote or from home.


• Vibrant and collaborative office campus, including cafes, convenience store, chill‑out zones, GP, post office, gym and onsite childcare centre.


• Competitive leave policies, including additional ‘Connected’ days to focus on culture, family, health, community, or whatever’s important to you.


• Inclusive, carer‑neutral paid Parental Leave of up to 16 weeks, supporting growing families.


• Direct your own development and build future‑ready skills with Optus U’s industry‑focused micro‑credentials, developed in partnership 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 service from Macquarie University Metro Station, running every 6–8 minutes in the morning and afternoon.

Diversity, Inclusion & Belonging

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