Senior GPU Interconnect & Platform Reliability Engineer

Firmus Technologies Pty Ltd.; Sydney; On-site; AUD 150,000 - 210,000; Full time

Job summary

Firmus Technologies Pty Ltd. is seeking a Senior Platform Reliability Engineer, Fabric and Interconnect, to own the reliability of GPU interconnects, high‑performance networks and the DPU‑based host networking that powers our AI FactoryOS platform.

This is a hands‑on, senior role where automation is a first‑class skill and collaboration with engineering, hardware vendors and operations is essential. You will design and maintain guarded automation, drive firmware upgrade waves and capacity

Qualifications

• 8+ years of experience in production network or interconnect infrastructure in a 24/7 environment.
• Deep operational experience with GPU interconnect fabrics (NVLink and NVSwitch).
• Extensive experience with high-performance networking fabrics (InfiniBand or RoCE, e.g. NVIDIA Spectrum-X).
• Experience with DPU or SmartNIC-based host networking.
• Experience planning firmware upgrades and capacity expansions on production fabrics with defined rollback.
• Strong skills in infrastructure automation and infrastructure-as-code practices.
• Scripting for automation (Python, Go, Bash).
• Proven senior escalation point in production, including major incidents and runbooks.
• Clear technical judgement and communication to engineers and non-specialists.

Responsibilities

• Ensure reliable operation, automation and continuous improvement of the estate’s GPU interconnect and network fabrics.
• Develop guarded automation and remediation tooling for fabric faults.
• Diagnose and tune performance across the interconnect stack from application to link level.
• Operate DPU-based host networking across the fleet.
• Execute firmware upgrade waves, fabric expansions and capacity changes with defined rollback.
• Provide deepest technical expertise for fabric faults and drive permanent fixes.
• Lead vendor escalations at engineering level, reproducing faults to vendor standards.
• Lead technical recovery during major fabric incidents and mentor engineers; document runbooks and procedures.

Skills

High-performance networking

Systems engineering

NVLink / NVSwitch

InfiniBand / RoCE

DPU / SmartNIC

Automation / IaC

Python / Go / Bash

Incident response / on-call

Vendor escalation

Tools

NVIDIA Spectrum-X

Job description

Firmus Technologies Pty Ltd. is seeking a Senior Platform Reliability Engineer, Fabric and Interconnect, to own the reliability of GPU interconnects, high‑performance networks and the DPU‑based host networking that powers our AI FactoryOS platform.

This is a hands‑on, senior role where automation is a first‑class skill and collaboration with engineering, hardware vendors and operations is essential. You will design and maintain guarded automation, drive firmware upgrade waves and capacity