Firmus Technologies Firmus Technologies is a global leader pioneering the development and operation of efficient AI infrastructure across Asia Pacific.

Founded in Australia in 2019, our mission is to create the most productive AI infrastructure by combining cutting-edge technology with a steadfast commitment to sustainability.

At Firmus, we are unique in our approach. We design, build, and operate a new class of digital infrastructure – the AI Factory. Through our model-to-grid technology approach, we have pushed the boundaries of multi-generational liquid cooling systems, energy management, AI software orchestration, and construction. For our customers, this approach allows us to make every watt count and deliver low-cost AI tokens globally.

Firmus AI Cloud Our large-scale GPU cloud platform, Firmus AI Cloud, is purpose-built to deliver energy-efficient AI compute at scale to customers.

It empowers developers, enterprises, educational institutions, and government users to train and deploy AI models with unmatched efficiency and cost savings. With an ever-growing suite of services and applications, we are committed to delivering a cloud experience that is market-leading, proprietary, and built to scale.

Why Firmus? As an NVIDIA Cloud and Engineering partner in Asia Pacific, you will gain skills, experience, and exposure across the AI industry and be part of shaping what this industry looks like for decades to come.

We are founder-led, not a big corporate. Decisions happen fast, our leaders are accessible, and there's minimum bureaucracy between you and the work. Ownership comes early. Whatever your role, you will have a direct line to outcomes, helping shape how the business grows as we scale nationally across a long-term,



large-scale roadmap.

Work alongside founders and experts in AI infrastructure, energy systems and next-generation compute.

What we build here has impact beyond the business. Our AI Factories are designed to operate as assets to the energy grid to actively strengthen the communities and regions they operate in rather than drawing from them.

Considering applying? You don't need a perfect background to join our team. If you're driven and curious, there's a path for you. We back our people to grow into new domains and take on challenges beyond their previous experience.

Role Summary Firmus Technologies is seeking a skilled Network Engineer to join our Commissioning team. This position will play acrucial role in the deployment, commissioning, and configuration of our network designs for AI infrastructure projects. This role offers an exciting opportunity to work at the forefront of AI networking technology and contribute to the growth ofAI infrastructure.

Key Responsibilities Deploy and Commission High-Performance Networks

Deploy, test, and commission low-latency, high-throughput interconnects (e.g.: Ethernet 100/200/400/800 GbE) for AI workloads.

Configure, test, diagnose, remediate, and benchmark performance across multi-node clusters, high-speedstorage fabrics and parallel computing AI environments.





Work with partners and vendors to respond to and resolve network issues identified during the bring-up and commissioning of large-scale AI platforms.

Analyse logs, run diagnostics and coordinate with internal teams, partners, and vendors as required.

Develop and maintain monitoring tools to proactively identify bottlenecks, errors and abnormal behaviours.

Test configurations, performance, redundant paths and other aspects as set out in the commissioning test plan and acceptance tests.

Ethernet and RDMA Networking

Design, monitor and troubleshoot Ethernet fabrics and RDMA-enabled transport layers.

Maintain network configurations and ensure fabric health and topology visibility using vendor and open sourcetools.

Perform verification and acceptance tests for the new network fabric.

Understand various RoCE optimisation protocols and mechanisms (e.g.: SHARP, CollNet) and use performance tools (e.g.: ibstat, perfquery, ib_write_bw, nccl, etc) to monitor fabric health, congestion and link errors.

Enable and test optimised networking for AI frameworks and work closely with partners and vendors to ensureefficient multi-node communication.

Perform deep dive diagnostics to resolve layer 1-4 issues across HPC and AI workloads.

Network as Code and Automation

Develop and maintain automated network configurations using Infrastructure as Code (IaC) tools (e.g.: Ansible,Netbox, bash and Python scripts).

Implement CI/CD pipelines for network changes to improve speed, consistency, and auditability.

Automate routine tasks such as provisioning, backups and compliance checks.

Project Management and Stakeholder Management

Support the deployment team in t

📌 Network Engineer, AI Cluster Commissioning (Melbourne)
🏢 Firmus Technologies
📍 Melbourne