Kubernetes & Cloud Integration Engineer

Job Overview

Join OpenNebula Systems as a Kubernetes & Cloud Integration Engineer, working remotely from Spain. You'll be part of a team developing next-generation management platforms for the Cloud-Edge Computing Continuum.

Key Responsibilities

• Design, integrate, and deploy Rancher-managed RKE2 clusters across cloud, on-premises, and edge environments


• Integrate and operate certified CNIs/CSIs for RKE2 such as Calico, Cilium, Canal, Multus, and Longhorn


• Develop and maintain automation for cluster lifecycle using Terraform, Ansible, Helm, and GitOps


• Implement and manage networking, storage, upgrades, security hardening, and HA configurations for large-scale RKE2 environments


• Troubleshoot advanced issues across Kubernetes, Rancher Manager, RKE2, Linux, and cloud infrastructure layers


• Monitor and optimize performance, reliability, and scalability of clusters in cloud-edge environments


• Support engineering teams and customers with solution design, issue escalation, demos, and cloud-edge integration


• Produce and maintain technical documentation, architecture diagrams, runbooks, and procedural guides

Required Qualifications

• Bachelor's or Master's in Computer Science, Software Engineering, Telecommunications, or related discipline


• 3+ years of hands-on experience running Kubernetes in production environments


• Experience designing or operating distributed, multi-site, cloud-edge, or telecom-grade architectures


• Deep expertise with RKE2, Rancher Manager, and the broader Rancher ecosystem


• Strong Linux engineering background (debugging, networking, kernel-level troubleshooting, security hardening)


• Hands-on experience with IaC and automation tools: Terraform, Ansible, Helm, GitOps (Flux/ArgoCD)


• Knowledge of HA patterns, distributed systems, and observability stacks (Prometheus, Grafana, Loki, etc.)


• English fluency at a professional or native-equivalent level

About OpenNebula Systems

OpenNebula Systems has been leading the development of European open source technology that helps organizations around the world manage their corporate data centers and build their Enterprise Clouds. We are an established leader in the cloud infrastructure industry and the global open source community.