Telstra
SeniorFull-timeHybridSydney NSW, AustraliaInformation technologyTechnical supportPosted 1 week ago
About the job
The Senior Technical Specialist – Mobile Voice at Optus is a pivotal position that involves acting as a subject matter expert within Mobile Core Integration and Maintenance Engineering. This job is all about leading the testing and integration of new software, hardware, and services into the Optus network while providing top-notch Tier 3 technical support across voice platforms. The team thrives on collaboration, innovation, and a commitment to delivering exceptional service.
You'll be responsible for
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Owning integration and testing
Own integration and testing for mobile voice infrastructure including IMS, HSS/SDM, 5G Stand‑Alone Core, VoNR, Diameter Routing, STP, subscriber provisioning, mobile voice billing, and cloud technologies such as OpenShift and AWS.🛠️
Delivering Tier 3 support
Deliver Tier 3 support (including rostered on‑call, after‑hours and weekend work) for performance, design, fault resolution and optimisation.📅
Planning production cutovers
Plan and execute production cutovers with minimal customer impact and seamless rollback where required.What we're looking for
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Extensive telecommunications experience
Proven experience with 4G/5G technologies and mobile voice infrastructure.View fit
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Practical expertise with telecom systems
Hands-on experience with Nokia, Ericsson, and Oracle systems.View fit
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Strong knowledge of protocols
Demonstrated understanding of SIP, SS7, Sigtran, and Diameter.View fit
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