RHEL & OpenShift Platform Engineer (Security-First)

ZENITH INFOTECH (S) PTE LTD.; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

Zenith Infotech (S) PTE LTD invites an experienced RHEL & OpenShift Platform Engineer to own the Linux and container platform layer supporting enterprise applications. You will ensure health, security, and performance of the RHEL fleet and OCP clusters, while integrating with Pega, WebSphere, and IBM MQ to support DevSecOps and government-grade security standards.

The role collaborates with architecture, security, and operations teams across DEV/PROD environments to deliver reliable, scalable

Qualifications

• Solid hands-on experience with RHEL production environments.
• Experience deploying/operating Red Hat OpenShift Platform.
• Familiarity with CIS/IM8-style security hardening.

Responsibilities

• Own the RHEL OS fleet underpinning OCP nodes and app servers.
• Deploy, upgrade, and maintain OCP 4.x clusters and node lifecycle.
• Manage MCO for node OS customization and security hardening.
• Administer Quay mirror registry, image scanning, and VAPT remediation.
• Support integration with Pega, WebSphere, and IBM MQ.

Skills

RHEL administration

OpenShift administration

Security hardening

Troubleshooting

AWS familiarity

Tools

Quay registry

Machine Config Operator

Kubernetes/OCP

HAProxy

Job description

Zenith Infotech (S) PTE LTD invites an experienced RHEL & OpenShift Platform Engineer to own the Linux and container platform layer supporting enterprise applications. You will ensure health, security, and performance of the RHEL fleet and OCP clusters, while integrating with Pega, WebSphere, and IBM MQ to support DevSecOps and government-grade security standards.

The role collaborates with architecture, security, and operations teams across DEV/PROD environments to deliver reliable, scalable