Senior Voice & Data Core Engineer - Onsite 24/7

Singtel GroupSydney, Sydney🇦🇺AustraliaPosted 12 Sept 2026

Why This Role Stands Out

This onsite Senior Voice & Data Core Engineer role at Singtel Group offers a fantastic opportunity to ensure the performance of critical network services, develop your expertise in 5G Core and IMS platforms, and mentor junior engineers. You'll thrive in this dynamic 24/7 team if you are passionate about network reliability and continuous improvement, contributing to strategic initiatives that enhance customer experience. Apply now to join a leading telecommunications company and advance your career in network engineering.

Quick Overview

Seniority

Mid Senior

Employment type

Full Time

Work mode

On Site

Location

Sydney, Sydney, Australia

Job Description

Optus is seeking a Voice and Data Core Senior Technical Specialist to ensure performance, availability and reliability of critical network services in a 24/7 Tier 2 Network Operations team. This onsite role in Macquarie Park, Sydney, supports Packet Core, IMS, and 5G Core platforms, leading incidents and guiding upgrades.

The successful candidate will mentor teammates, drive continuous improvement and collaborate with engineering and vendors on strategic initiatives to enhance customer