Job Description
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 setting. The work spans design, delivery, automation, and operational excellence.
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What you will do
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Lead as the technical authority for Core and EMS across new projects, from impact assessment and design reviews to acceptance and handover to operations
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Create explicit work instructions for Ericsson Dual Mode Core, including disaster recovery and orchestration of containerized network functions
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Introduce and integrate new core network elements, cloud native capabilities, and lifecycle upgrades in partnership with delivery and project teams
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Identify and implement network automation using Python, Shell, and Ansible to remove repetitive tasks and enable autonomous operations
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Provide 2nd level escalation support to Core, IP Transport, and OSS operations teams
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Oversee security vulnerability management, certificate lifecycle, and monthly technical and installed base audits
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Share knowledge and mentor operational teams to uplift capability
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Support end-to-end presales for Core portfolio offerings with the local Managed Services team
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Review and approve Methods of Procedure for test and production environments
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Execute network changes, software upgrades,



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