Network Infrastructure Engineer | Enterprise & OT Networks | Sydney

D'Arcy Weil; Sydney; On-site; AUD 160,000 - 170,000; Full time

Benefits offered by this job

Travel allowances

Certification support

Flexible working arrangements

Job summary

D’Arcy Weil is recruiting a Network Infrastructure Engineer for a major Australian telecommunications business. Based in Sydney, the role is hands-on, covering enterprise and OT networks across multiple sites nationwide, from design and rollout through incident resolution and IT/OT boundary management.

Key responsibilities include securing architectures, upgrades, site rollouts, and maintaining accurate network documentation. Willingness to travel interstate and regionally is required.

Qualifications

• Tertiary qualification in information technology or related discipline.
• Cisco CCNA or comparable certification.
• Extensive hands-on experience with LAN, WAN, wireless, firewall, VPN and SD‑WAN.
• Experience in OT or industrial network environments.
• Strong network security knowledge, threat mitigation and secure design principles.
• Experience with monitoring, incident management and change implementation.

Responsibilities

• Run and evolve enterprise LAN, WAN, wireless, firewall, VPN and SD‑WAN environments across corporate and OT sites.
• Design and implement secure network architectures across IT and OT; lead upgrades, rollouts, migrations.
• Diagnose and fix complex network faults and restore services quickly during incidents.
• Operate and support secure industrial networks and manage the IT/OT boundary with sound security discipline.
• Keep topology diagrams, configurations, procedures and standards accurate and current.

Skills

LAN

WAN

Wireless

Firewall

VPN

SD-WAN

Network security

OT networks

Incident management

Threat mitigation

Education

Bachelor's degree in IT

Cisco CCNA

Job description

Keep enterprise and operational technology networks secure and reliable across a major Australian telecommunications business.

• Enterprise and OT network ownership
• LAN, WAN, wireless, firewall, VPN and SD-WAN
• Major Australian telecommunications business

In short: A hands‑on network engineering role with a major Australian telecommunications business, covering corporate and operational technology networks across multiple sites nationally, from design and rollout through to incident resolution and the IT and OT boundary. Extensive hands‑on enterprise networking experience, with OT or industrial network exposure, required. Regular interstate and regional travel.

D’Arcy Weil is recruiting a Network Infrastructure Engineer on behalf of a major Australian telecommunications business with corporate and operational technology networks spread across multiple sites. The Sydney‑based role is hands‑on and technical, covering enterprise and OT networks, including:

• Running and improving LAN, WAN, wireless, firewall, VPN and SD‑WAN environments across corporate and operational sites
• Designing and building secure network architectures across IT and OT, and leading upgrades, site rollouts and connectivity migrations
• Diagnosing complex faults and restoring services fast when incidents hit operations
• Supporting secure industrial networks and managing the boundary between IT and OT
• Keeping topology diagrams, configurations, procedures and standards accurate and current

It suits an engineer who is equally at home in a corporate comms room and on an operational site, and who treats security as part of every design decision.

The Role

• Infrastructure management: Run and evolve enterprise LAN, WAN, wireless, firewall, VPN and SD‑WAN environments across corporate and operational sites, keeping network health, capacity and performance in check
• Design and delivery: Design and implement secure network architectures across IT and OT, and lead the technical work on upgrades, site rollouts and connectivity migrations
• Incident resolution: Diagnose and fix complex network faults, and restore services quickly when incidents affect business operations
• OT and industrial networking: Operate and support secure industrial network environments, and manage the IT and OT boundary with sound security discipline
• Documentation and standards: Keep network documentation accurate and current, including topology diagrams, configurations, operating procedures and engineering standards

About You

• A tertiary qualification in information technology or a related discipline
• Cisco CCNA or a comparable networking certification
• Extensive hands‑on experience with LAN, WAN, wireless, firewall, VPN and SD‑WAN technologies
• Demonstrated experience in OT or industrial network environments
• Strong network security knowledge, including threat mitigation and secure design principles
• Experience with monitoring, incident management and change implementation in complex environments
• Willingness to travel interstate and regionally on a regular basis

What’s on Offer

• Base of $160,000 to $170,000 plus superannuation, plus travel allowances
• Ownership of enterprise and OT networks across a major Australian telecommunications business
• Hands‑on work across both corporate IT and industrial environments
• Variety across design, rollout, incident response and security
• Structured career development and certification support
• Flexible working arrangements where the role allows
• A Sydney base

Only candidates with current Australian working rights will be considered. All applications and enquiries will be treated in strict confidence.

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