Senior Network Engineer (Fabric Deployment)

Job Type: Full-time | Location: Sydney, NSW | Department: Network | Reporting to: Senior Manager, Network Engineering | Work Location Type: #onsite

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. 

We have grown substantially since 2019, from our inception in Australia to now having several facilities across North America and being listed on NASDAQ… and we are just getting started! By joining us, you will be contributing to the future of sustainable high-performance compute and the local communities we strive to have a positive impact on.   

The Senior Network Engineer (Fabric Deployment) in the Deployment Team is responsible for designing, deploying, automating, and optimizing high-performance data center networks that power large-scale AI/ML and cloud infrastructure.

• Excellent written and verbal communications skills are mandatory.
• Strong ownership mindset and a great attitude.
• Ability to travel and work flexible hours to support the organization.
• Proven experience in large scale and/or complex data center networks
• Deep expertise in Layer 2/3 networking (VLANs, VXLAN, BGP EVPN, OSFF, IS-IS)
• Deep expertise in Data center fabric design (CLOS, ECMP)
• Strong experience with networking hardware (Nvidia Spectrum-X, Fortinet, Arista, Cisco, Dell)
• Strong experience with networking software (Cumulus Linux / Sonic / NX-OS / EOS)
• Strong experience with firewalls and security (Fortinet, Firewall Rules, VDOM)
• Support RDMA/RoCEv2 or InfiniBand environments (if applicable), including PFC, ECN, and lossless fabric tuning.
• Automation Tooling – Python, Ansible, Git, Gitlab, Python, Terraform

• Design and deploy network architecture for new AI data centers, including high-performance GPU compute fabrics (InfiniBand/RoCE), front-end, storage, and out-of-band management networks.
• Lead network workstreams through data center construction and energization, coordinating with construction, electrical, and DC operations teams on rack layouts, cabling plans, and deployment timelines.
• Provision, configure, and validate switches and fabric components at scale, so the network is production-ready when GPU capacity comes online.
• Develop standardized network designs, bills of materials, and deployment runbooks so new sites can be built quickly and repeatably.
• Automate zero-touch provisioning, configuration generation, and deployment validation (cabling verification, link health, fabric burn-in) using Python, Ansible, Terraform, or similar tools.
• Own network acceptance testing and cluster bring-up. Troubleshoot complex deployment issues, then hand fully validated, documented environments to operations teams

• 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.