Senior CS Core Cloud Specialist – Ericsson/Nokia IMS Voice

Ericsson; Sydney; On-site; AUD 180,000 - 260,000; Full time

Job summary

Ericsson in Sydney seeks a highly skilled MS Core Cloud Specialist – CS Core IMS to manage and evolve voice core infrastructure across Australian Data Centers. This senior role requires deep Ericsson IMS stack and Nokia MSS/MSC-S expertise.

You will operate and maintain IMS nodes, manage CS core voice components, and lead fault resolution, upgrades, and change management. Strong collaboration with cross-domain teams is essential.

Qualifications

• Bachelor’s in Telecom, Electronics, Computer Science or equivalent.
• 15+ years CS Core/IMS hands-on with Ericsson IMS and Nokia MSS/MSC-S.

Responsibilities

• Operate and maintain Ericsson IMS nodes across Sydney Data Centers.
• Manage Nokia MSS and MSC-S nodes for CS Core voice.
• Fault management, incident resolution, and root-cause analysis for IMS/CS Core outages.
• Perform software upgrades, patch management, and capacity expansions on Ericsson/Nokia platforms.
• Monitor IMS and CS Core KPIs using Grafana, Kalix, Ericsson ENM; address degradations.
• Configuration management and provisioning using Ericsson ENM and OneFM.
• Develop and review MOPs for change management and maintenance windows.
• Collaborate with PS CORE, Fixed Voice, VAS, and NOC teams on cross-domain incidents.
• Provide Level 3 support and vendor TAC escalation management (Ericsson and Nokia).
• Maintain accurate network documentation and knowledge-base articles.

Skills

Ericsson IMS

Nokia MSS/MSC-S

Grafana

Kalix

Ericsson ENM

OneFM

Education

Bachelor’s in Telecom, Electronics, Computer Science or equivalent

Tools

Ericsson ENM

OneFM

Grafana

Kalix

Job description

Ericsson in Sydney seeks a highly skilled MS Core Cloud Specialist – CS Core IMS to manage and evolve voice core infrastructure across Australian Data Centers. This senior role requires deep Ericsson IMS stack and Nokia MSS/MSC-S expertise.

You will operate and maintain IMS nodes, manage CS core voice components, and lead fault resolution, upgrades, and change management. Strong collaboration with cross-domain teams is essential.