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About the Role

Firmus Technologies is seeking a Principal Engineer, Platform to own the engineering platform across public cloud and data centers. The role focuses on enabling engineers to securely ship services to production with minimal support through a self-service, API-first golden path. Designs must scale across hundreds of thousands of GPUs in gigawatt-scale AI factories.

Responsibilities

Own the architecture of the engineering platform and its multi-site management plane.
Set a target architecture two to three years ahead and plan the steps to achieve it.
Design the platform around a repeatable scaling unit for capacity growth and failure containment.
Decide on the build, network, upgrade, and recovery processes for internal Kubernetes and hypervisor clusters.
Ensure Kubernetes remains conformant and close to upstream releases with zero-downtime upgrades.
Automate new site deployment and regularly test recovery processes.
Decide on service packaging, release, and promotion strategies with progressive rollout and rollback capabilities.
Lead design reviews for significant changes and settle escalated technical disputes.
Make decisions rapidly with incomplete information, documenting assumptions and revisiting as needed.
Own engineer self-service through an API-first design, treating tickets as opportunities to improve self-service.
Maintain a service catalogue in code with owners and scorecards for production-readiness and security.
Provide multi-cluster deployment for internal teams and customer products.
Enable AI agents to work on the delivery path under strict controls, with human approval for production changes.
Set SLOs and error budgets for the platform and prioritize reliability work based on budget.
Lead technical responses to major incidents and ensure post-mortems result in preventative fixes.
Set standards for code review, acceptance tests, traceable builds, and security controls in pipelines.
Provide secrets management, certificate automation, and single sign-on as platform services.
Build continuous compliance for SOC 2 Type 2 and ISO 27001 into the platform.
Automate patching without disruption, including urgent security fixes within defined timelines.
Own cost management at the design level, including cloud spend.
Grow engineers through mentorship, design review, and code review.
Set standards for AI usage in software development, including review gates and automated checks.
Own technical interviews and assessments for platform engineers.
Shape the platform roadmap in collaboration with product, infrastructure, network, and site-delivery leaders.
Agree on ownership boundaries in writing with relevant teams and resolve disagreements directly.
Represent the platform team in customer and auditor reviews for security, reliability, and compliance.

Requirements

Bachelor's degree in computer science or a related technical field, or equivalent practical experience.
10+ years in platform, infrastructure, or software engineering.
At least 3 years at a principal level or equivalent, setting technical direction for multiple teams.
Hands-on experience and intent to remain so.
Experience owning a golden path for engineers to ship services.
Experience with infrastructure as code (e.g., Terraform, OpenTofu).
Experience with CI/CD and GitOps (e.g., Argo CD, Flux).
Experience with progressive rollout, rollback, artifact signing, provenance, and security gates.
Experience running a platform as a product with self-service adoption measured by adoption and delivery performance.
Experience building, upgrading, and recovering Kubernetes on self-managed servers and in public clouds across multiple sites.
Deep, practical knowledge of Kubernetes internals (API server, etcd, scheduling, networking, storage, admission control).
Strong proficiency in Go or Python, developing services, controllers, or tools for consumption by other teams.
Experience building security into a platform (secrets management, certificate automation, short-lived credentials, fleet patching).
Experience running a reliability program (SLOs, error budgets, change control, incident reviews).
Clear written and verbal communication in English.
Willingness to join the on-call rotation.
Willingness to travel overseas occasionally.

Skills

Platform Engineering
Infrastructure Engineering
Software Engineering
Kubernetes
Hypervisors
Public Cloud (AWS)
Infrastructure as Code (Terraform, OpenTofu)
CI/CD
GitOps (Argo CD, Flux)
Progressive Rollout
Rollback Strategies
Artifact Signing
Provenance
Security Gates
Platform as a Product
Self-Service APIs
Platform CLIs
Kubernetes Internals
Go
Python
Secrets Management (Vault, OpenBao)
Certificate Automation
Short-lived Credentials
Fleet Patching
SOC 2 Type 2
ISO 27001
SLOs
Error Budgets
Change Control
Incident Reviews
Written Communication
Verbal Communication

Location

Australia
Singapore

Work Type

Full-time

Experience Level

Principal
10+ years
3+ years at principal level

Education Level

Bachelor's degree in computer science or related technical field, or equivalent practical experience

About the Company

Firmus Technologies is a global leader in 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.
We design, build, and operate a new class of digital infrastructure – the AI Factory.
Our model-to-grid technology approach pushes boundaries in liquid cooling, energy management, AI software orchestration, and construction.
Firmus AI Cloud is a large-scale GPU cloud platform purpose-built for energy-efficient AI compute at scale.
It empowers developers, enterprises, educational institutions, and government users to train and deploy AI models with unmatched efficiency and cost savings.
We are committed to delivering a market-leading, proprietary, and scalable cloud experience.

Equal Opportunity

At Firmus, we are committed to building a diverse and inclusive workplace.
We encourage applications from candidates of all backgrounds who are passionate about creating a more sustainable future through innovative engineering solutions.