Principal Engineer, AI Cloud Software

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 efficient 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.
ROLE SUMMARY
Firmus Technologies is seeking a Senior AI Infrastructure Engineer, Observability, to join our Engineering and Technology team. You will establish how we measure, validate and communicate the health of GPU infrastructure used for customer and internal workloads. You will define trusted health signals and service-readiness criteria, and turn them into reusable dashboards, alerts, queries, diagnostic checks and operational guidance. Your work will help commissioning, infrastructure and operations teams bring capacity online safely, identify degradation early and recover from failures quickly. You will also make knowledge self-service by publishing clear reference implementations, runbooks and AI-ready operational knowledge that other teams can use and extend.
KEY RESPONSIBILITIES
The Health Standard
Define GPU and host health criteria for customer and internal workloads, and the service-readiness gates that repair and capacity workflows depend on. Cover what stops or corrupts AI jobs: GPUs falling off the bus, XID events, ECC and memory faults, NVLink/NVSwitch degradation, thermal and power capping, NCCL and collective failures, silent data corruption, and stragglers running below fleet baseline.
Reference Implementations
Publish golden dashboards, alerts, PromQL/LogQL queries and health checks that other teams adopt and extend. Your output is the standard and the examples. The alerts must be specific, low-noise, and with a clear next action.