Senior Kubernetes Platform Engineer
Firmus Technologies5 days ago
Singapore, SingaporeSenior
Responsibilities
- Operate and continuously improve Firmus’s multi-tenant Kubernetes platform across every site in the estate.
- Build operational tooling, guarded remediation, orchestration, controllers, and automation for fleet-scale operations.
- Execute cluster provisioning, patching, upgrades, lifecycle management, decommissioning, and version compliance across the fleet.
- Operate and recover Kubernetes control planes, including etcd state, certificate rotation, failed upgrades, and corrupted resources.
- Operate virtual clusters, tenant isolation patterns, GPU integration, device plugins, GPU scheduling, and driver coordination.
- Run tenant onboarding and release pipelines and diagnose scheduling, CNI, CSI, admission, and resource contention failures.
- Operate production Kubernetes baselines covering admission policy, workload identity, and network policy requirements.
- Lead technical recovery during major incidents, drive permanent fixes, document runbooks, and mentor engineers.
- Participate in the after-hours escalation roster for the Kubernetes estate.
Requirements
- 8+ years of overall experience with substantial ownership of production Kubernetes platforms in a 24/7 environment.
- Deep experience operating Kubernetes at fleet scale, including cluster lifecycle, upgrades, and multi-cluster management.
- Strong knowledge of Kubernetes control-plane internals, including etcd, the API server, controllers, schedulers, and certificate and credential rotation.
- Production experience writing Kubernetes controllers, operators, or admission logic.
- Experience with multi-tenant or virtual-cluster patterns and Kubernetes-layer tenant isolation.
- Experience operating GPU-enabled Kubernetes, including device plugins, GPU scheduling, and driver coordination.
- Strong infrastructure automation, infrastructure-as-code, and GitOps experience using tools such as OpenTofu or Terraform, Ansible, and Argo CD.
- Strong scripting or programming experience for operational automation using Go, Python, Bash, or equivalent technologies.
- Experience with major incident response, on-call participation, post-incident reviews, senior production escalation, and executable runbooks.
- Understanding of Kubernetes security fundamentals, including admission control, workload identity, and network policy.
- Clear technical judgment, communication, documentation, design-note, and escalation skills.
- Preferred: experience with GPU or HPC Kubernetes workloads at scale, automated tenant or customer onboarding, vendor Kubernetes distributions, accelerated-computing reference architectures, DPU or SmartNIC networking, and open-source Kubernetes ecosystem projects.
- Preferred: bachelor’s degree in computer science, engineering, or a related discipline, or an equivalent combination of relevant experience and training.
Benefits
- Based in Australia or Singapore, with travel to Australian AI Factory sites as required.
- Participates in a 24/7 after-hours escalation roster with other senior engineers.
Tech Stack
Categories
About Firmus Technologies
Firmus Technologies builds energy‑efficient AI infrastructure, developing liquid‑cooled “AI Factory” data centers and operating a large‑scale GPU cloud for model training. The company sells capacity and services to developers, enterprises, education, and government customers, with a focus on energy and cost efficiency across Asia‑Pacific. Founded in 2019 in Australia, Firmus is privately held and headquartered in St Leonards, Tasmania.