> Markdown version of [/jobs/ext/2213645-cloud-systems-engineer](https://www.wearedevelopers.com/jobs/ext/2213645-cloud-systems-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cloud Systems Engineer - **Company:** OpenNebula Systems - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Software Applications, Cloud Computing, Collaborative Software, Computer Networks, Continuous Integration, Data Structures, Github, Kernel-Based Virtual Machine, Nagios, Routing, Open Source Technology, Open VSwitch, Software Maintenance, Quick EMUlator (QEMU), Prometheus, Ruby, Software Engineering, Systems Architecture, Systems Integration, Virtual Local Area Networks, Virtual Machines, Cloud Platform System, Computerised Systems, Git, Information Technology, Slack, Codebase, Terraform - **Published:** August 25, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role Academic Background and Certifications + Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field. Professional Experience + Hands-on experience in cloud systems integration and support using open-source technologies + Experience with Cloud Management platforms and their associated technologies. Understand the implication of managing virtualized infrastructures and the orchestration of the underlying subsystems Technical Experience + Experience in developing and maintaining Ruby code base for system applications with knowledge of computing systems integration and the interaction with the operating system facilities like I/O, networking and virtualization + Experience integrating computing systems specially related to virtualization, storage and networking. Knowledge of KVM/QEMU virtualization, including qcow2 and management of Virtual Machines; storage systems (usage and administration) NAS and SAN, specially for storing VM disk images; and Linux networking stack including VLAN protocols, package filtering, basic routing protocols, Open vSwitch, and DPDK + Experience writing Terraform modules and managing deployments of virtualized infrastructures with Terraform + Experience deploying and using monitoring and alerting tools like Prometheus. Design monitoring metrics and associated data structure. Elaborate and analyze usage reports obtained from the monitor data 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 Cloud Systems Engineers are responsible for the deployment and support of large edge and cloud-based use cases, pilot and POC systems and services. They work on complicated technical issues, resolving them promptly and efficiently. Their responsibilities include communicating with users, addressing their needs, troubleshooting, and providing step by step solutions. 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 + Designing, integrating, deploying, and maintaining large cloud-based solutions, systems and services + Ensuring efficient functioning of cloud functions in accordance with best practices + Interacting with users and use cases, providing systems support, system architecture definition, making recommendations based on user needs, implementation, testing, user training, and deployment of open source solutions + Troubleshooting incidents, identify root causes, fix and document problems, and implement preventive measures + Monitoring installed systems and infrastructure.Monitoring and troubleshooting the performance and issues of the cloud system, and updating and maintaining the cloud system + Delivering quality performance indicators within the scope of the assigned project, including project journals, status reports, and other standard documentation + Working with other companies in the cloud-edge ecosystem within international projects and open-source communities. Availability to occasional travel and participation in international events and meetings + Working with the development teams in the escalation of support issues, the use cases and solutions team in discovery and demo sessions, and the community team in contributions to the open-source community + Writing and maintaining software documentation and project reports ## 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) - [Flex your Energy: Building a Cloud-Native Platform for Renewable Energy Communities](https://www.wearedevelopers.com/videos/1990-flex-your-energy-building-a-cloud-native-platform-for-renewable-energy-communities) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [We adopted DevOps and are Cloud-native, Now What?](https://www.wearedevelopers.com/videos/485-we-adopted-devops-and-are-cloud-native-now-what) ## Related Articles - [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) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Mastering Remote Work: Tips for Developers](https://www.wearedevelopers.com/magazine/558-mastering-remote-work-tips-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)