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Linux Systems Engineer - Bare Metal & Kubernetes

OptiverSydney, Sydney🇦🇺AustraliaPosted 15 Sept 2026

Why this role stands out

This role offers a fantastic opportunity to shape critical infrastructure for a leading global trading firm, working with cutting-edge bare-metal Kubernetes and Linux technologies. You'll thrive here if you possess strong Linux and on-prem Kubernetes experience and are eager to drive innovation in a collaborative, high-impact environment. Embrace the flexibility of a hybrid work model and contribute to a robust, high-performance trading platform.

Quick overview

SeniorityMid Senior
Employment typeFull Time
Work modeHybrid
LocationSydney, Sydney, Australia
Load BalancingArgoCDGitHub ActionsGrafanaKubernetesPrometheusTerraform

Job description

As a Linux Engineer in the Global Linux team, you will design, build and operate the critical infrastructure that powers our trading environment. The team owns both large-scale bare-metal Linux platforms and on-prem Kubernetes clusters across our global datacenters.
You will play a key role in evolving our Kubernetes platform while continuing to support and improve our high-performance Linux estate.

What you'll do

Design, deploy and operate on-prem Kubernetes clusters in a bare-metal environment (Rancher-managed)

  • Maintain and improve our bare-metal Linux infrastructure, including provisioning, lifecycle management and performance tuning
  • Own and operate core Kubernetes components including Cilium (CNI), ArgoCD (GitOps), and Rancher
  • Build and maintain CI/CD workflows for infrastructure and cluster deployments using ArgoCD and GitHub Actions
  • Develop and maintain infrastructure as code using Terraform and bespoke on-prem systems
  • Participate in on-call rotation covering both Kubernetes clusters and other Linux-based production systems
  • Drive reliability, scalability and performance improvements across both containerized and non-containerized workloads
  • Contribute to monitoring, observability and security posture across the Linux and Kubernetes platforms
  • Ensure the broader team can effectively operate and support the Kubernetes and Linux platforms by building clear documentation, operational runbooks, and providing practical, hands on guidance
Who you are
  • Strong Linux systems engineering experience in production environments
  • Hands on experience operating Kubernetes on prem (not only managed cloud offerings)
  • Experience with:
    • Rancher
    • Cilium or other CNI technologies
    • ArgoCD (GitOps workflows)
    • Terraform
    • CI/CD systems such as GitHub Actions
  • Solid understanding of networking fundamentals (L2/L3, routing, firewalls, load balancing)
  • Experience troubleshooting performance issues across kernel, container and network layers
  • Production mindset with experience in incident response and post mortem driven improvements
Nice to have
  • Experience building monitoring stacks (e.g. Prometheus, Grafana)
  • Experience with Kubernetes security controls (network policies, RBAC, policy engines)
  • Knowledge of low latency or performance sensitive environments
  • Experience contributing to internal platform tooling

No prior trading or financial experience is needed - our onboarding program will kick start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who We Are

At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for

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