OpenShift Platform Administrator

We are looking for an experienced OpenShift Platform Administrator to join an Infrastructure, Production & Security team within a large-scale and highly regulated environment.

This is a true Platform Engineering role focused on building, operating, maintaining, and evolving enterprise-grade Red Hat OpenShift Container Platform environments. You will be responsible for the platform itself—not the applications running on it.

Location: Porto, Portugal

Work Model: Hybrid (2 days per week onsite)

About the Role

You will manage on-premises OpenShift clusters supporting multiple business units and mission-critical workloads. The role covers the full platform lifecycle, including cluster administration, networking, storage, security, observability, automation, and disaster recovery.

This is an excellent opportunity for professionals passionate about Kubernetes and OpenShift administration in enterprise-scale environments.

Key Responsibilities

• Install, upgrade, and maintain Red Hat OpenShift Container Platform 4.x clusters across Development, Staging, Production, and Disaster Recovery environments
• Manage cluster networking, including OpenShift SDN / OVN-Kubernetes, Network Policies, Ingress Controllers, Egress IPs, TLS Certificates, and Service Mesh components
• Administer storage integrations with SAN/NAS platforms, OpenShift Data Foundation (ODF/Ceph), CSI Drivers, Persistent Volumes, Snapshots, and Backup Solutions
• Manage identity and security integrations, including LDAP, Active Directory, OAuth Providers, RBAC, SCCs, Pod Security Standards, and Admission Controls
• Support and govern multi-tenant OpenShift environments through namespace strategies, quotas, and onboarding processes
• Manage Operators lifecycle using OperatorHub and OLM
• Maintain monitoring, observability, and logging solutions including Prometheus, Alertmanager, Loki, Grafana, and enterprise monitoring integrations
• Plan and execute disaster recovery strategies, backup and restore procedures, and failover exercises
• Implement patching, vulnerability management, and security hardening initiatives
• Automate platform operations using Ansible, GitOps, and ArgoCD
• Act as a technical escalation point for application teams using the platform
• Contribute to operational documentation, runbooks, and on-call activities

Mandatory Requirements

• Hands-on administration experience with Red Hat OpenShift Container Platform 4.x in production environments
• Experience performing cluster installations, upgrades, and lifecycle management (IPI or UPI deployments)
• Experience with OpenShift on bare-metal and/or VMware-based infrastructure
• Strong Linux administration skills (RHEL preferred)
• Solid understanding of Kubernetes architecture and administration
• Deep knowledge of OpenShift-specific components such as Routes, SCCs, Operators, BuildConfigs, and ImageStreams
• Practical experience managing OpenShift networking and RBAC at scale
• Strong knowledge of OpenShift CLI (oc), kubectl, and YAML configuration management
• Experience with monitoring and logging platforms such as Prometheus, Alertmanager, Loki, or EFK
• Professional English communication skills

Nice to Have

• Experience with OpenShift Data Foundation (ODF) / Ceph
• Experience with GitOps and ArgoCD
• Knowledge of Advanced Cluster Management (ACM)
• Experience with Quay Registry and Advanced Cluster Security (ACS)
• Experience with Infrastructure as Code and Ansible Automation
• OpenShift, Kubernetes, or Red Hat certifications (RHCSA, RHCE, EX280, EX380, etc.)

Technical Stack

• Red Hat OpenShift 4.x
• Kubernetes
• RHEL / Linux
• VMware
• OVN-Kubernetes / OpenShift SDN
• LDAP / Active Directory
• RBAC / SCC / Security Policies
• ODF / Ceph
• Prometheus
• Alertmanager
• Loki / EFK
• Grafana
• Ansible
• ArgoCD
• GitOps
• Quay Registry