Senior Network Engineer - AI Cloud & Data Center (Hybrid)

Iris Energy; Sydney; Hybrid; AUD 120,000 - 180,000; Full time

Job summary

IREN, a data-centric AI cloud provider, seeks a Senior Network Engineer in Sydney to build and operate data center fabrics and manage GPU interconnects across campuses. You will configure BGP across WAN, plan production changes with rollback procedures, and maintain observability to keep workloads running around the clock.

You will automate deployment and tooling using Python or Go, contribute to site builds, document processes, and collaborate with cross‑functional teams to deliver resilient,

Qualifications

• Solid experience as a network engineer in data centre, cloud or service provider environments.
• Proficiency in configuring, testing, validating and troubleshooting LAN networks, especially in medium to large-scale HPC and AI environments.
• Strong BGP, OSPF or IS-IS, and MPLS skills, including traffic engineering, and hands‑on experience with leaf‑spine fabrics.
• Advanced, hands‑on knowledge of VXLAN, EVPN and SDN.
• Hands‑on experience with network platforms such as Cisco, Juniper and Arista.
• Experience with firewalls, VPNs and WAN technologies such as SD-WAN.
• Strong software engineering experience, writing network automation and code to design, provision and operate the network and its systems, in languages such as Python or Go.
• Experience with NVIDIA Spectrum networking, RoCE or InfiniBand in large deployments, HPC architectures, cluster management such as NVIDIA Base Command Manager or Run:ai, and GPU platforms such as NVIDIA DGX and CUDA is highly regarded.
• A methodical approach to troubleshooting and change, and good written communication.

Responsibilities

• Build, operate and troubleshoot data centre fabrics, including leaf‑spine Ethernet and high‑performance GPU interconnects.
• Configure and support BGP across our WAN, backbone, transit and peering connections.
• Responsible for safely planning and implementing production changes, with clear procedures and rollback plans.
• Responsible for maintaining network observability and health, and for responding to alerts.
• Take part in new site builds, from fibre and cabling checks through device bring‑up and acceptance testing.
• Lead incident triage, recovery and follow‑up.
• Automate network deployment, configuration, validation and remediation through software, so that changes are generated from our source of truth rather than typed by hand.
• Develop and maintain the software and tools that run our network, using Git, code review, automated testing and CI/CD, with AI assistance where it helps.
• Keep documentation, diagrams and runbooks current.
• Share knowledge with and support less experienced engineers.
• Competitive salary range finalized based on experience and impact
• Short and long‑term incentive programs designed to reward both results and long‑term company success

Skills

BGP

OSPF/IS-IS

MPLS

VXLAN

EVPN

SDN

Cisco

Juniper

Arista

VPNs

WAN

Python

Go

GPU interconnects

NVIDIA Spectrum

RoCE

InfiniBand

NVIDIA Base Command Manager

Run:ai

NVIDIA DGX

CUDA

Tools

NVIDIA Spectrum

RoCE

InfiniBand

NVIDIA Base Command Manager

Run:ai

NVIDIA DGX

CUDA

Job description

IREN, a data-centric AI cloud provider, seeks a Senior Network Engineer in Sydney to build and operate data center fabrics and manage GPU interconnects across campuses. You will configure BGP across WAN, plan production changes with rollback procedures, and maintain observability to keep workloads running around the clock.

You will automate deployment and tooling using Python or Go, contribute to site builds, document processes, and collaborate with cross‑functional teams to deliver resilient,