About this role
The challenge
We're at a pivotal stage in the evolution of our cloud platform. To continue scaling efficiently and strengthening reliability, we are evolving our virtualization platform within our IaaS environment. Our infrastructure supports mission-critical services, where performance, stability and continuous improvement are key.
As a Virtualization Engineer, your mission will be to design, deploy, operate and evolve virtualization infrastructures based on KVM in production environments. You will contribute directly to the evolution of the virtualization layer, participate in architecture decisions, and help improve infrastructure-related products.
You will play a key role in resolving critical incidents, analyzing high-impact escalations from the operations team, and optimizing performance, stability and efficiency of the platform. You will also contribute to reducing operational friction through automation and continuous improvement.
You'll be part of a highly collaborative engineering environment, working closely with Network, Systems,



Storage and Operations teams to solve cross-functional issues and ensure the platform evolves in a scalable and reliable way.
Collaboration will be essential. You will support infrastructure decisions, participate in architecture changes, migrations and capacity expansions, proactively identify improvements, and ensure the platform continues to evolve with a strong technical foundation.
Requirements that are important for us

Experience in administration and support of virtualization environments based on KVM in production.
Proven experience in implementation, operation and troubleshooting of virtualization platforms.
Advanced knowledge of Linux system administration.
Strong understanding of KVM virtualization stack, including QEMU and libvirt.
Experience diagnosing complex issues related to performance, capacity, availability and stability.
Practical knowledge of networking in virtualized environments: bonding (

📌 Virtualization Engineer (Madrid)
🏢 Plenit
📍 Madrid