{"id":2121803,"url":"https://alion.io/job/jotelulu-virtualization-engineer","title":"Virtualization Engineer","company":{"id":53774,"name":"Plenit","domain":"plenit.com","url":"https://alion.io/company/plenit","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-14T06:34:16Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"KVM","optional":false},{"name":"Linux","optional":false},{"name":"QEMU","optional":false},{"name":"Ansible","optional":true},{"name":"OpenStack","optional":true}],"status":"live","first_seen_at":"2026-04-13T10:58:34Z","employer_posted_date":"2026-04-13","last_verified_at":"2026-10-14T20:37:03Z","board_verified":true,"closed_at":null,"days_open":184,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":183},"description":"About this role\nThe challenge\nWe'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.\nAs 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.\nYou 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.\nYou'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.\nCollaboration 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.\nRequirements that are important for us\nExperience in administration and support of virtualization environments based on KVM in production.\n\nProven experience in implementation, operation and troubleshooting of virtualization platforms.\n\nAdvanced knowledge of Linux system administration.\n\nStrong understanding of KVM virtualization stack, including QEMU and libvirt.\n\nExperience diagnosing complex issues related to performance, capacity, availability and stability.\n\nPractical knowledge of networking in virtualized environments: bonding (link aggregation), VLANs or VXLANs, firewall rules (iptables).\n\nKey skills and expected impact\nStrong documentation practices and contribution to technical procedures and operational best practices.\n\nOptimization of performance, stability and efficiency of the virtualization platform.\n\nAbility to lead root cause analysis and propose technical improvements to reduce incident recurrence.\n\nResolution of complex and critical incidents escalated by the operations team.\n\nContribution to automation to reduce manual and repetitive operational tasks.\n\nTechnical judgment in validating new solutions, designs and changes impacting the virtualization layer.\n\nActing as a technical reference, contributing to raising the overall technical level with practical knowledge and global vision.\n\nNice to have\nExperience with infrastructure orchestration platforms such as OpenStack, CloudStack or similar.\n\nExperience in cloud providers, IaaS platforms or large-scale infrastructure environments.\n\nKnowledge of centralized storage (NFS, iSCSI) and distributed storage (Ceph).\n\nExperience in high availability, capacity planning and resource optimization.\n\nFamiliarity with observability, monitoring and performance analysis tools.\n\nExperience with automation tools such as Ansible.\n\nParticipation in architecture evolution, standardization or platform improvement projects.\n\nAbility to document technical decisions and communicate clearly in multidisciplinary environments.\n\nTools\nVirtualization: KVM, QEMU, libvirt\n\nNetworking: bonding, VLANs, VXLANs, iptables\n\nStorage: NFS, iSCSI, Ceph\n\nOrchestration: OpenStack, CloudStack or similar\n\nAutomation: Ansible or similar\n\nObservability & performance: monitoring and performance analysis tools\n\nCollaboration & documentation: technical procedures and operational 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