Senior Network Engineer

Operandi Consulting; City of Melbourne; Hybrid; AUD 120,000 - 150,000; Full time

Job summary

Operandi Consulting seeks a Senior Network Engineer in Melbourne CBD to design, implement and support enterprise network and infrastructure across IT and OT environments. The role blends hands-on delivery with technical leadership to ensure reliable, secure connectivity and scalable networks.

You will work across LAN/WAN, SD-WAN, firewalls, VPNs and cloud networking, collaborate with IT and OT teams, participate in incident response, and help drive standardisation, automation and best practices.

Qualifications

• Minimum 4 years' experience in Infrastructure/Network Engineer roles.
• Relevant IT qualification or equivalent industry experience.
• Experience with enterprise infrastructure across multiple locations.
• Experience with network security technologies, firewalls and secure remote access.
• Strong troubleshooting and analytical abilities.

Responsibilities

• Design, implement and support enterprise network and infrastructure services.
• Monitor performance, availability, capacity and security; perform root-cause analysis.
• Support Microsoft Azure networking across cloud environments.
• Deliver network projects, technology upgrades and lifecycle activities.
• Maintain infrastructure standards, diagrams and procedures.
• Support network security, disaster recovery and business continuity across IT and OT environments.
• Provide technical leadership and knowledge sharing across the technology team.
• Participate in incident response and out-of-hours support when required.

Skills

Enterprise networking

Switching & Routing

Wireless

Firewalls

VPNs

Network security

TCP/IP

DNS/DHCP

BGP

OSPF

Network segmentation

Multi-site WAN

Troubleshooting

Leadership

Stakeholder mgmt

Education

Relevant IT/Network qualification or equivalent experience

Tools

Cisco

Aruba

Meraki

Fortinet

Palo Alto

PowerShell

Python

Azure networking

Job description

Senior Network Engineer

LOCATION

Melbourne CBD

WORK ARRANGEMENT

Hybrid - 3-4 days on-site per week

Position Summary

The Senior Network Engineer is responsible for the design, implementation and support of enterprise network and infrastructure services across the organisation's IT and OT environments. The role combines hands-on technical delivery with technical leadership, ensuring network, cloud connectivity and security infrastructure remain reliable, secure and fit for purpose.

Key Accountabilities

• Design, implement, maintain and support enterprise network and infrastructure services, including LAN, WAN, wireless, SD-WAN, firewalls, internet and cloud connectivity.
• Monitor infrastructure performance, availability, capacity and security, and resolve complex incidents through effective troubleshooting and root-cause analysis.
• Support Microsoft Azure networking and connectivity across cloud and hosted environments.
• Deliver infrastructure and network projects, technology upgrades and lifecycle activities.
• Maintain infrastructure standards, documentation, diagrams and operational procedures.
• Support network security, segmentation, vulnerability remediation, disaster recovery and business continuity across IT and OT environments.
• Contribute to cybersecurity and compliance requirements, including Essential Eight, AESCSF, ISA/IEC 62443 and NIST.
• Manage telecommunications providers, technology vendors and managed service partners.
• Identify and implement opportunities for standardisation, automation, optimisation and continuous improvement.
• Provide technical leadership, guidance and knowledge sharing across the technology team.
• Participate in critical incident response and out-of-hours support when required.

Key Skills and Attributes

Mandatory

• Strong knowledge of enterprise networking principles and technologies.
• Practical experience with switching, routing, wireless, firewalls, VPNs and network security.
• Strong understanding of TCP/IP, DNS, DHCP, BGP, OSPF and network segmentation.
• Experience supporting multi-site enterprise environments and WAN connectivity.
• Strong analytical, troubleshooting and problem-solving skills.
• Ability to manage competing priorities and work effectively in a dynamic operational environment.
• Strong communication, stakeholder engagement and collaboration skills.
• Customer-focused approach with a commitment to reliable and secure business outcomes.
• Ability to provide technical leadership and work collaboratively across IT and operational teams.

Desirable

• Experience with Cisco, Aruba, Meraki, Fortinet, Palo Alto or equivalent technologies.
• Experience with SD-WAN and cloud networking.
• Knowledge of Microsoft Azure networking and connectivity.
• Experience with industrial networking and OT environments.
• Understanding of cybersecurity frameworks and secure infrastructure architecture.
• Experience with network monitoring, automation and scripting using PowerShell, Python or similar.
• Experience working in manufacturing or critical infrastructure environments.

Qualifications and Experience

Mandatory

• Relevant tertiary qualification in Information Technology, Network Engineering, Infrastructure Engineering or a related discipline, or equivalent industry experience.
• Minimum 4 years' experience in an Infrastructure Engineer, Network Engineer or similar role.
• Demonstrated experience supporting enterprise infrastructure and networking across multiple locations.
• Experience with network security technologies, firewalls and secure remote access.
• Experience troubleshooting complex infrastructure and network issues.

Desirable

• Industry certifications such as Cisco CCNA/CCNP, Fortinet NSE 4 / FCP - FortiGate Administrator, Palo Alto Networks PCNSA/PCNSE, Aruba ACSA/ACSP, Cisco Meraki CMNA/CMNO, or Microsoft Certified: Azure Network Engineer Associate (AZ-700) or equivalent.
• Experience supporting Microsoft Azure networking environments.
• Experience working within critical infrastructure environments.