Linux Systems Engineer - Bare Metal & Kubernetes

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 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 everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

• What you'll get

• You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure, enabling all of our employees to benefit from our global profit pool.

• The opportunity to work alongside best-in-class professionals from over 50 different countries.

• Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.

• Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities.

• Training and continuous learning opportunities, including access to conferences and tech events.

• Diversity statement

• Optiver is committed to diversity and inclusion. We encourage applications from candidates of all backgrounds, and welcome requests for reasonable adjustments during the process.

• Questions? Get in touch with the recruitment team.