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Kubernetes & Cloud Integration Engineer

hace 6 días

Pozuelo de Alarcón, Madrid, España OpenNebula Systems A tiempo completo

For over a decade now, OpenNebula Systems has been leading the development of the European open source technology that helps organizations around the world to manage their corporate data centers and build their Enterprise Clouds.

If you want to join an established leader in the cloud infrastructure industry and the global open source community, keep reading, because you can now join a team of exceptionally passionate and talented colleagues whose mission is to help the world's leading enterprises to implement their next-generation edge and cloud strategies. We are hiring

Since 2019, and thanks to the support from the European Commission, OpenNebula Systems has been leading the edge computing innovation in Europe, investing heavily in research and open source development, and playing a key role in strategic EU initiatives such as the IPCEI-CIS and the "European Alliance for Industrial Data, Edge and Cloud".

We are currently looking for a Kubernetes Engineer (Rancher & RKE2 Specialist) to join us in Europe as part of our team developing the next-generation management platform for the Cloud-Edge Computing Continuum.

Job 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

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.

Experience Required
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

What's in it for me?
Some of our benefits and perks vary depending on location and employment type, but we are proud to provide employees with the following:

  • Competitive compensation package and Flexible Remuneration Options: Meals, Transport, Nursery/Childcare
  • Customized workstation (macOS, Windows, Linux any distro is welcome) Private Health Insurance
  • 6 hours workday on Fridays and everyday during August
  • PTO: Holidays, Personal Time, Sick Time, Parental leave.
  • All Remote company with bright HQ centrally located in Madrid, and offices in Boston (USA) and Brno (Czech Republic)
  • Healthy Work-Life Balance : We encourage the right for Digital Disconnecting and promote harmony between employees personal and professional lives
  • Flexible hiring options: Full Time/Part Time, Employee (Spain/Usa) / Contractor (other locations)
  • We are building an awesome, Engineering First Culture and your opinion matters: Thrive in the high-energy environment of a young company where openness, collaboration, risk-taking, and continuous growth are valued
  • Be exposed to a broad technology ecosystem. We encourage learning and researching new technologies and methods as part of your everyday duties