Network Engineer

Job Type: Full-Time | Location: Sydney, NSW | Department: Network | Reporting to:  Vice President, Network Engineering | Work Location Type: #remote #hybrid 

IREN is a vertically integrated AI Cloud provider, delivering large-scale data centers and GPU clusters for AI training and inference. IREN’s platform is underpinned by its expansive portfolio of grid-connected land and power in renewable-rich regions across North America, Europe and APAC. 

With 100% renewable energy, we build, own and operate our data centers and take pride in being at the forefront of sustainable solutions for the ever-evolving applications of high-performance compute. We believe that human progress is invaluable, but it should be done in the right way – responsibly, sustainably and having a positive impact on the communities we operate in. 

Our Network Engineering team builds the networks that power AI at scale. We design and run the high-performance fabrics that connect tens of thousands of GPUs, the backbone and WAN that link our campuses across continents, and the facilities networks that keep our data centers safe and running. 

Our work spans all aspects of network engineering for IREN, from the data center and core to the WAN and peering edge. 

Our Network Engineering team builds the networks that power AI at scale. We design and run the high-performance fabrics that connect tens of thousands of GPUs, the backbone and WAN that link our campuses across continents, and the facilities networks that keep our data centres safe and running. Our work spans all aspects of network engineering for IREN, from the data centre and core to the WAN and peering edge. software capability of the team.

As a Senior Network Engineer you will build and run the networks behind IREN's AI cloud. You will bring up new GPU fabrics, keep our WAN and edge healthy, and make well-planned changes that keep customer workloads running around the clock.

• 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.

• 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 

We value diverse perspectives and believe that skills can be developed. If you’re passionate about this role, we want to hear from you — whether you meet every criteria or not. Your unique experiences might be exactly what we need! 

IREN is an equal opportunity employer that is committed to creating an inclusive workplace. We are committed to evaluating qualified applicants and do not discriminate against protected characteristics under applicable legislation. This job will remain posted until filled. While we appreciate all applications we receive, we are only able to contact candidates under consideration.  

By applying for this position and submitting your resume and application materials, you consent to the processing of your personal information in accordance with our Job Applicant Privacy Statement available on our website at www.iren.com.