Senior Network Infrastructure Specialist

2 weeks ago

Sydney, New South Wales, Australia beBeeNetwork Full time $120,000 - $200,000
Job Description

We are seeking an experienced Network Engineer to join our team.

The ideal candidate will have a strong background in IMS core network engineering and experience with Ericsson architecture, Nokia IMS platforms, and cloud-native technologies.

The successful candidate will be responsible for designing, implementing, and optimising IMS-based voice and multimedia services, leading complex core network migrations, and supporting cloud-native deployments.

Key Responsibilities:
  • Engineer and maintain IMS core network components, with a focus on Ericsson architecture (CSCF, HSS, TAS, MRF, SBC).
  • Rapidly adapt to Nokia IMS platforms (Cloud Native Communication Suite, TAS, CFX, SBC, MRF).
  • Lead planning and execution of large-scale live core network migrations, including vendor swaps, rollback strategies, and cutover procedures.
  • Support and troubleshoot 4G/5G voice services including VoLTE, VoNR, VoWiFi, and RCS.
  • Design and secure IP networks using BGP, OSPF, QoS, VPNs, and SBCs (Ribbon, Metaswitch).
  • Deploy and manage VNFs/CNFs on cloud platforms (OpenStack, Kubernetes, VMware).
  • Use orchestration tools to automate and scale IMS deployments.
  • Perform diagnostics and root cause analysis in multi-vendor environments.
Requirements

The following skills and qualifications are required for this role:

  • Minimum 5 years in IMS core network engineering within a Telco or equipment vendor.
  • Strong understanding of 3GPP IMS standards (SIP, Diameter, RTP, SDP, ISUP, H.248, Megaco).
  • Proven experience with Ericsson IMS products and architecture.
  • Nokia IMS experience highly desirable; candidates without it must demonstrate rapid learning ability.
  • Hands-on experience with VoLTE, VoNR/5G Voice, VoWiFi, and IMS-based multimedia applications.
  • Solid IP networking knowledge and experience with interconnect SBCs.
  • Familiarity with cloud-native technologies and orchestration tools.
  • Excellent troubleshooting, communication, and documentation skills.
What We Offer

As a member of our team, you can expect:

  • A dynamic and collaborative work environment.
  • Opportunities for professional growth and development.
  • A competitive compensation package.
  • Access to cutting-edge technologies and training.
How to Apply

To apply for this role, please submit your resume and cover letter through our online portal.

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