Senior Openshift Administrator – Critical Environments

Description

Job Summary: We are seeking a Senior Openshift Administrator for a strategic project within the Public Administration, managing critical infrastructures in high-demand environments. Key Highlights: 1. Stable and strategic project in a critical institutional environment 2. Participation in high-level technological infrastructures 3. Highly specialized technical environment DESCRIPTION BEIGAR, a technology consulting firm specializing in building technical teams for highly critical environments, is looking for a **Senior Openshift Administrator** to join a strategic project within the Public Administration, in a highly demanding and confidential environment. We seek a candidate with solid experience in **Openshift 4\.x**, particularly in complex deployments in disconnected (air\-gapped) environments, capable of managing critical infrastructures on VMware vSphere and hybrid environments with baremetal nodes. The role requires a high level of technical expertise, autonomy, and experience resolving complex incidents within enterprise Kubernetes platforms. ### **Main Responsibilities** * Deployment and administration of Openshift clusters in on\-premise environments * Implementation of air\-gapped environments (no internet connectivity) * Monitoring, observability, and logging of platforms * Storage management and cluster operations * Updating and maintaining Openshift platforms * Diagnosing and resolving complex incidents (nodes, networking, operators, storage) * Defining best practices and technical procedures ### **What We Offer** * A stable and strategic project within a critical institutional environment * Participation in high-level technological infrastructures * A highly specialized technical environment * Collaboration with multidisciplinary teams * Working hours: * Monday to Thursday: 7:30 AM – 5:00 PM (1-hour lunch break) * Friday: Compressed workday Summer compressed schedule (June to September) * REQUIREMENTS * Solid experience with Openshift 4\.x (4\.17 – 4\.20\ preferred) * Experience deploying clusters from scratch (UPI / ABI) * Experience in disconnected (air\-gapped) environments * Knowledge of: * Prometheus, Grafana, logging * RH Quay (offline mirror registry) * ODF (OpenShift Data Foundation) * Experience with offline cluster upgrades * Ability to resolve complex incidents ### **Preferred Qualifications** * Openshift GitOps (ArgoCD) * Environments with NVIDIA GPUs and NVIDIA GPU Operator * Backup & recovery (Veeam Kasten) * MetalLB LoadBalancer * Cluster security (Advanced Cluster Security – ACS) * Monitoring with Zabbix * Ceph administration ### **Other Considerations** * Project subject to rigorous selection processes and in-depth technical interviews * 100% on-site mode in Madrid * Environment requiring commitment, discretion, and technical responsibility