Linux Administrator

Infinity Quest; Województwo pomorskie; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Hybrid model (3 onsite, 2 remote)

On-call rotations

Job summary

Infinity Quest in Poland is seeking an experienced OpenShift Platform Administrator to manage and support Red Hat OpenShift for our cloud-native workloads.

You will monitor cluster health, perform upgrades, troubleshoot issues, and collaborate with Security, Networking, VMware, Storage, and Application teams to ensure resilience, security, and compliance. Join a hybrid team and participate in on-call rotations to minimize downtime.

Qualifications

• 5+ years of hands-on experience with Red Hat OpenShift Administration and Support.
• Strong knowledge of Kubernetes, container technologies, and OpenShift architecture.
• Experience with oc, kubectl, YAML, Operators, RBAC, SCC, Projects, and Namespaces.
• Strong Linux/RHCOS administration skills.
• Experience with OpenShift upgrades, patching, certificate management, and cluster maintenance.
• Good understanding of OpenShift networking, DNS, Ingress Controllers, and Load Balancers.
• Experience with storage technologies (PVs, PVCs, CSI Drivers, NFS, iSCSI).
• Experience supporting OpenShift on VMware environments.
• Knowledge of backup and recovery tools such as Velero, OADP, or Dell PPDM.
• Hands-on experience with monitoring tools such as Prometheus, Alertmanager, and Grafana.
• Scripting and automation experience (Bash/Shell).
• Understanding of CI/CD pipelines and ITSM processes

Responsibilities

• Administer and support Red Hat OpenShift Container Platform (OCP).
• Monitor cluster health, performance, capacity, and availability.
• Troubleshoot issues related to Kubernetes, containers, networking, storage, authentication, and application deployments.
• Perform cluster upgrades, patching, certificate renewals, and lifecycle management.
• Manage OpenShift security, including RBAC, SCCs, quotas, and namespace governance.
• Support backup, recovery, disaster recovery testing, and platform resilience initiatives.
• Maintain and optimize OpenShift networking components, including Routes, Ingress, DNS, and Load Balancers.
• Perform root cause analysis (RCA) and implement preventive solutions.
• Develop automation scripts and maintain operational documentation.
• Collaborate with Security, Network, Storage, VMware, Cloud, and Application teams.
• Participate in incident management and on-call support rotations.

Skills

Red Hat OpenShift Administration

Kubernetes

OpenShift architecture

oc, kubectl, YAML

RBAC, SCCs

Linux/RHCOS administration

OpenShift upgrades

OpenShift networking

Storage technologies

VMware OpenShift

Velero / OADP / Dell PPDM

Monitoring tools (Prometheus, Grafana)

Scripting (Bash)

CI/CD / ITSM

Job description

• Cooperation model: Hybrid (3 days onsite, 2 days remote) + on-call rotations

Key Responsibilities

• Administer and support Red Hat OpenShift Container Platform (OCP).
• Monitor cluster health, performance, capacity, and availability.
• Troubleshoot issues related to Kubernetes, containers, networking, storage, authentication, and application deployments.
• Perform cluster upgrades, patching, certificate renewals, and lifecycle management.
• Manage OpenShift security, including RBAC, SCCs, quotas, and namespace governance.
• Support backup, recovery, disaster recovery testing, and platform resilience initiatives.
• Maintain and optimize OpenShift networking components, including Routes, Ingress, DNS, and Load Balancers.
• Perform root cause analysis (RCA) and implement preventive solutions.
• Develop automation scripts and maintain operational documentation.
• Collaborate with Security, Network, Storage, VMware, Cloud, and Application teams.
• Participate in incident management and on-call support rotations.

Required Skills & Experience

• 5+ years of hands-on experience with Red Hat OpenShift Administration and Support.
• Strong knowledge of Kubernetes, container technologies, and OpenShift architecture.
• Experience with oc, kubectl, YAML, Operators, RBAC, SCC, Projects, and Namespaces.
• Strong Linux/RHCOS administration skills.
• Experience with OpenShift upgrades, patching, certificate management, and cluster maintenance.
• Good understanding of OpenShift networking, DNS, Ingress Controllers, and Load Balancers.
• Experience with storage technologies (PVs, PVCs, CSI Drivers, NFS, iSCSI).
• Experience supporting OpenShift on VMware environments.
• Knowledge of backup and recovery tools such as Velero, OADP, or Dell PPDM.
• Hands-on experience with monitoring tools such as Prometheus, Alertmanager, and Grafana.
• Scripting and automation experience (Bash/Shell).
• Understanding of CI/CD pipelines and ITSM processes