Redhat OpenShift Administration

EXPRESS PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

EXPRESS PTE. LTD. in Singapore seeks a senior OpenShift Administrator to deploy, upgrade, and manage OpenShift 4.x clusters across multi-cloud environments. You will configure RBAC/SCCs, manage Linux infra, and drive day-2 operations with automation via MCO.

Ideal candidate has 6+ years in OpenShift administration, strong RHEL/Kubernetes skills, and hands-on experience with IaC, CI/CD, Service Mesh, and GitOps practices.

Qualifications

• 6+ years in OpenShift administration.
• Bachelor's degree or equivalent.
• Strong Linux (RHEL) and Kubernetes knowledge.
• Experience across multi-cloud OpenShift clusters.
• Experience with IaC, automation, CI/CD pipelines.
• OpenShift platform modernization with Service Mesh, GitOps.

Responsibilities

• Deploy, upgrade, and manage OpenShift 4.x clusters, including control planes, worker nodes, and day-2 operations.
• Configure RBAC, SCCs, and network policies.
• Handle Linux infrastructure, OS patching, storage provisioning (PV/PVC), and MCO automation.
• Monitor cluster health, inspect pod logs, and resolve runtime errors like image pull or OOM failures.

Skills

Linux & Kubernetes

Networking & Storage

OpenShift multi-cluster

GitOps & CI/CD

Education

Bachelor's degree

Tools

Machine Config Operator (MCO)

Quay

Service Mesh

Serverless frameworks

IaC/Automation tools

Job description

Roles & Responsibilities

• Cluster Management: Deploy, upgrade, and manage OpenShift 4.x clusters, including control planes, worker nodes, and day-2 operations.
• Platform Security: Configure Role-Based Access Control (RBAC), Security Context Constraints (SCCs), and network policies.
• System Administration: Handle Linux infrastructure, OS patching, storage provisioning (PV/PVC), and automated configurations via the Machine Config Operator (MCO).
• Troubleshooting: Monitor cluster health, inspect pod logs, and resolve runtime errors like image pull or out-of-memory failures.

Key Skills Needed

• Linux & Kubernetes: Deep knowledge of Red Hat Enterprise Linux (RHEL) system administration and core Kubernetes concepts.
• Networking & Storage: Understanding of OpenShift routes, ingress controllers, storage classes, and container security registries like Quay.
• 6+ years of experience working in a OpenShift administration role
• Bachelor's degree or its equivalent qualification
• Advanced knowledge of Red Hat OpenShift platform will be an advantage
• In-depth expertise in managing multiple Kubernetes clusters across multi-cloud environments.
• Proven expertise in operationalization of Red Hat OpenShift container platform through the adoption of Service Mesh,
• GitOps principles, and Serverless frameworks, migration to OpenShift container platform
• Experience with infrastructure as code, automation tools, and CI/CD pipelines
• Experience implementing system infrastructure and cloud solutions, including data storage, networking, monitoring, and security