About this role Join our Managed Services team supporting a Tier-1 fixed wireless operator. As a
Senior Network Engineer
, you will be the subject matter expert for Cloud Native Core and Element Management Systems, driving integration, stability, and continuous improvement across a large-scale, multi-vendor environment. The work spans design, delivery, automation, and operational excellence.
What you will do
Lead as the technical authority for Core and EMS across new projects, from impact assessment and design reviews to acceptance and handover to operations
Create clear work instructions for Ericsson Dual Mode Core, including disaster recovery and orchestration of containerized network functions
Introduce and integrate recent core network elements, cloud native capabilities, and lifecycle upgrades in partnership with delivery and project teams
Identify and implement network automation using Python, Shell, and Ansible to remove repetitive tasks and enable autonomous operations
Provide 2nd level escalation support to Core, IP Transport, and OSS operations teams
Oversee security vulnerability management, certificate lifecycle, and monthly technical and installed base audits
Share knowledge and mentor operational teams to uplift capability
Support end-to-end presales for Core portfolio offerings with the local Managed Services team
Review and approve Methods of Procedure for test and production environments
Execute network changes, software upgrades,



and updates on core network elements when required
Maintain deep knowledge of core network elements, solution architecture, and EMS platforms
Investigate and resolve northbound interface and statistical file integration issues
Maintain a clear view of end-to-end topology and interworking across network elements
Facilitate the introduction of new products, software, applications, and services
Run quarterly network-wide parameter audits to ensure consistency
What you will bring
Bachelor's degree in Engineering or equivalent technical qualification
10+ years in cellular networks, including at least 3 years in 5G SA or NSA
10+ years across telecom core operations, design, or architecture, ideally in EPC, Cloud Native Core, or IP MPBN environments
Strong hands‐on experience with Ericsson Core Network products and EMS
Proven delivery across managed services, network modernization, integration, or solution architecture programs
Solid experience with Cisco and Juniper IP core infrastructure
Deep knowledge of MPLS, BGP, OSPF, and Segment Routing, including SR-MPLS or SRv6
Proficiency in Python, Bash or Shell, and Ansible for automation
Experience with cloud-native core deployments, for example Kubernetes, OpenShift, Helm, Docker
Good knowledge of UNIX and Windows server platforms, preferably at admin level
Strong understanding of IP networking, security, and telecom networks
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📌 Senior Network Engineer (Sydney)
🏢 Ericsson
📍 Sydney