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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Kubernetes & Cloud Integration Engineer - **Company:** OpenNebula Systems - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Bash Shell, Cloud Computing, Collaborative Software, Continuous Integration, Software Debugging, Linux, Distributed Systems, Github, Ansible, Prometheus, Ruby, Runbook, Software Engineering, Systems Integration, SUSE Linux, Grafana, Git, Kubernetes, Information Technology, Slack, Rancher, Multiaccess Edge Computing, Cloud Integration, Terraform, Golang - **Published:** September 1, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role Academic Background and Certifications + Bachelor's or Master's in Computer Science, Software Engineering, Telecommunications, or related discipline. + Certifications such as CKA, CKAD, SUSE Rancher or equivalent are a strong plus. Professional Experience + 3+ years of hands-on experience running Kubernetes in production environments. + Experience designing or operating distributed, multi-site, cloud-edge, or telecom-grade architectures. + Proven track record deploying and managing RKE2 or other hardened Kubernetes distributions. Technical Experience + Deep expertise with RKE2, Rancher Manager, and the broader Rancher ecosystem. + Strong understanding of the RKE2 Support Matrix and certified CNI/CSI components (Calico, Cilium, Canal, Multus, Longhorn). + 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.). + Experience in languages like Golang, Ruby and bash. + Experience developing/maintaining Kubernetes controllers and solutions based on Kubernetes Cluster API + Ability to debug and optimize complex multi-layer, multi-cluster cloud-edge deployments. Language Skills + English fluency at a professional or native-equivalent level, with excellent clarity and expression in both writing and speech. Soft Skills & Collaboration + Strong customer service mindset, with a focus on responsiveness and user satisfaction. + Clear communication and documentation with strong written and verbal English, async collaboration, and visibility of work. + Self-management and accountability with ability to work independently, manage time, and take ownership of tasks and deadlines + Technical autonomy and tool proficiency with confidence in using Git, CI/CD, remote collaboration tools (Slack, Zoom, GitHub, etc.), and solving problems without direct supervision ## Description Kubernetes & Cloud Integration Engineers are responsible for designing, integrating, deploying, and maintaining large-scale cloud-based solutions built on Rancher-managed RKE2 clusters across cloud and edge environments. They work on end-to-end lifecycle management-from architecture and automation to operations and optimization-ensuring that Kubernetes platforms are secure, scalable, reliable, and aligned with industry best practices. These engineers play a key role in building production-grade cloud-edge infrastructures, integrating certified CNIs/CSIs, automating multi-cluster deployments, and ensuring consistent, stable operations across distributed environments. They troubleshoot complex multi-layer issues, collaborate with engineering teams, and support customers adopting advanced cloud-edge architectures Application note: We know job applications take time, and we really appreciate candidates who read the role description carefully. As a small check, when answering the application questions, please include the word "pineapple" in one of your answers. 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. + Maintain and troubleshoot the OpenNebula Kubernetes Cluster API Provider (CAPONE) and storage provider (OpenNebula CSI driver) + 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. + Ensure compliance with the RKE2 Support Matrix, certified components, and industry best practices. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Coffee with Developers: David Heinemeier Hansson](https://www.wearedevelopers.com/videos/875-coffee-with-developers-david-heinemeier-hansson) - [Stack Overflow: Community and AI](https://www.wearedevelopers.com/videos/600-stack-overflow-community-and-ai) - [How I saved 200K/yr in direct costs writing 0 code lines in K8s](https://www.wearedevelopers.com/videos/1055-how-i-saved-200k-yr-in-direct-costs-writing-0-code-lines-in-k8s) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Mastering Kubernetes – Beginner Edition](https://www.wearedevelopers.com/videos/530-mastering-kubernetes-beginner-edition) ## Related Articles - [Learning Kubernetes made easy with KubeCampus](https://www.wearedevelopers.com/magazine/348-learning-kubernetes-made-easy-with-kubecampus) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe)