Overview

Cathara Consulting is seeking a Network Consultant to support the client's network and telecommunications services. Working with business representatives, managed service providers, vendors and technical stakeholders, the consultant will provide specialist network advice, hands-on transition support, technical guidance and stakeholder engagement to ensure solutions align with business requirements, technology standards and operational objectives.

The client is delivering a large-scale critical ICT infrastructure transformation program across more than 460 metropolitan, regional and remote sites. The program is modernising network and infrastructure services to provide a secure, resilient and scalable foundation for future digital services. The program includes replacing end-of-life assets, uplifting cyber security, improving service reliability, enabling strategic digital initiatives, remediating audit and compliance findings, and transitioning to contemporary managed infrastructure and support services.

Essential Skills

- Strong Cisco enterprise networking fundamentals, including hands-on Catalyst switching and practical Layer 2/3 troubleshooting in large campus environments.
- Foundational knowledge of Cisco SD-Access concepts, including fabric edge, border and control-plane roles, VXLAN, LISP and Security Group Tags.
- Experience supporting live production networks during transition, post-cutover or hypercare activities.
- Understanding of micro- and macro-segmentation in Cisco environments.
- Experience using endpoint information and traffic analysis to maintain accurate network-connected device records.
- Level 2/3 network or desktop support and systematic fault isolation experience.
- Experience configuring and installing routers, switches, firewalls, load balancers, VPNs and QoS services.
- Experience monitoring network performance, availability and reliability.
- Demonstrated experience working within configuration and change management processes.




- Ability to work effectively with vendors, service providers and technical teams to resolve complex issues.

Desirable Skills and Experience

- Exposure to Cisco ISE, NetFlow, telemetry or operational technology visibility platforms such as xDome or similar.
- Experience supporting IoT devices, particularly within medical or clinical environments.
- Experience developing strategic program roadmaps and delivering engagements of comparable scale and complexity.
- Strong stakeholder engagement experience and sound corporate knowledge.
- Previous experience working in or with a complex public-sector organisation.
- Experience supporting voice and telephony transitions and on-premises compute or hypervisor migrations.

Key Responsibilities

- Undertake physical network discovery across client environments, including tracing, identifying, labelling and documenting Ethernet and fibre cabling.
- Plan, execute and test the migration of end-user equipment from the legacy network to the segregated health LAN.
- Use endpoint analysis tools to identify devices, apply appropriate micro-segment tags and analyse traffic profiles.
- Validate firewall rules and access control lists required for communications between micro-segments.
- Develop treatment plans, detailed checklists and test plans using approved templates.
- Coordinate resolution of supporting-service issues involving DNS, DHCP, certificates, group policy and voice services.
- Support Cisco enterprise networks, including Catalyst switching, Layer 2/3 troubleshooting and Cisco SD-Access environments.
- Support live production networks during transition, cutover and hypercare, following runbooks and escalation processes.
- Apply IoT and medical-environment experience to develop treatment plans and coordinate configuration changes with third parties.
- Plan the migration of on-premises compute platforms and hypervisors to the recent LAN.
- Document changes, comply with technical change governance, and complete program reporting in the required format and frequency.

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📌 Network Consultant (City of Sydney)
🏢 Cathara Consulting
📍 City of Sydney