Senior Network Engineer: AI Cloud & HPC Fabrics

Iren Group; Sydney; Hybrid; AUD 180,000 - 240,000; Full time

Benefits offered by this job

Competitive salary range

Incentive programs designed to reward

Job summary

IREN is seeking a Senior Network Engineer to build and operate the networks behind its AI cloud in Sydney. You will bring up GPU fabrics, keep WAN and edge healthy, and implement controlled changes to ensure 24/7 workloads.

You will work on leaf-spine fabrics, BGP across WAN, and automation using Python or Go, with strong collaboration across global campuses and modern data-centre environments.

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.

Skills

BGP/OSPF/IS-IS

MPLS & TE

VXLAN/EVPN

Leaf-Spine Fabric

Cisco/Juniper/Arista

SDN

Python/Go

Network Automation

Tools

NVIDIA Spectrum Networking

RoCE/InfiniBand

NVIDIA Base Command Manager

Run:AI

CUDA GPUs

Job description

IREN is seeking a Senior Network Engineer to build and operate the networks behind its AI cloud in Sydney. You will bring up GPU fabrics, keep WAN and edge healthy, and implement controlled changes to ensure 24/7 workloads.

You will work on leaf-spine fabrics, BGP across WAN, and automation using Python or Go, with strong collaboration across global campuses and modern data-centre environments.