Company Description About Mirantis Mirantis is the Kubernetes-native AI infrastructure company, enabling organizations to build and operate scalable, secure, and sovereign infrastructure for modern AI, machine learning, and data-intensive applications. By combining open source innovation with deep expertise in Kubernetes orchestration, Mirantis empowers platform engineering teams to deliver composable, production-ready developer platforms across any environment—on-premises, in the cloud, at the edge, or in sovereign data centers. As enterprises navigate the growing complexity of AI-driven workloads, Mirantis delivers the automation, GPU orchestration, and policy-driven control needed to manage infrastructure with confidence and agility. Committed to open standards and freedom from lock-in, Mirantis ensures that customers retain full control of their infrastructure strategy. We are looking for a Senior DevOps Engineer to join the MOSK (Mirantis OpenStack for Kubernetes) product team, working at the intersection of OpenStack, Kubernetes, and product engineering. In this role, you will help design, validate, and evolve a cloud-native OpenStack platform that enables customers to build and operate enterprise-grade private clouds at scale. As a senior engineer, you will act as a technical authority on OpenStack and MOSK behavior, contribute to architectural decisions, support complex customer scenarios, and help ensure stable, high-quality product releases. Evaluate incoming customer requests for specific features by analyzing upstream OpenStack code, specifications, blueprints, and community documentation to assess feature maturity, stability, limitations, and operational caveats. Design, implement,



and document lifecycle management for OpenStack on Kubernetes — a core MOSK capability — with emphasis on non-disruptive upgrades, patching, scaling, rollback strategies, and feature compatibility across upgrades. Drive validation of enabled features by defining test scenarios, validating upstream code behavior in simulated or production-like deployments, and then integrating feature support into MOSK’s lifecycle management. Review and refine product designs, APIs, and implementations to ensure robustness, security, and a high-quality developer experience. Engineering Leadership: Lead design discussions, planning sessions, and retrospectives; help the team to uphold high standards for software quality, architectural rigor, and operational readiness. Design, implement, and maintain core frameworks, libraries, and internal tools that underpin MOSK development, testing, and lifecycle operations. Build and evolve automation for deploying and managing complex OpenStack-on-Kubernetes environments used in development, testing, and validation. Design, build, and maintain CI/CD pipelines and integrations with external systems to streamline build, test, validation, upgrade, and release workflows. Debug and resolve complex issues in customer production environments involving Kubernetes, OpenStack, networking, storage, and distributed systems. Upstream Troubleshooting & Contributions: Investigate issues in OpenStack services, analyze root causes at the code level,



and propose or contribute minor fixes upstream to improve product stability and supportability. Performance & Scalability Analysis: Identify and analyze performance bottlenecks across hardware and software layers; Manage and improve development, staging, and validation environments that closely mirror customer deployments to ensure release stability. Product Knowledge Authority: Act as an authoritative technical source for MOSK and OpenStack behavior, providing accurate, engineering-level input to documentation, field, and enablement teams to ensure correctness and consistency of product documentation and guidance. At least 5 years of practical administration experience in Linux (CentOS, Ubuntu, RHEL) as a server platform. Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent work experience. Experience in software development, Systems Administration, or SRE role. Deep understanding of the OS, ability to debug and tune underperforming systems, and troubleshoot software and hardware issues. Networking: Strong knowledge of networking technologies, including protocols, firewalls, and VPNs. Experience with managing and configuring networking equipment. Practical experience with SaltStack, Puppet, Ansible, or Chef for medium and large environments. Infrastructure as Code: Practical experience with Terraform. Be an expert in Docker and Kubernetes in production environments. Thorough understanding and practical experience with Kubernetes operators and Helm. CI/CD: Strong experience with Jenkins and building dependable build/release pipelines. Cloud Platforms: Understanding of principles of working in cloud environments such as OpenStack, AWS, GCP, or Azure. Strong scripting skills in Bash, Gr

📌 Senior DevOps Engineer, OpenStack Team (España)
🏢 Mirantis
📍 España