Senior RHEL & OpenShift Platform Engineer

ELLIOTT MOSS CONSULTING PTE. LTD.; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Elliott Moss Consulting Pte. Ltd. is seeking an experienced RHEL & OpenShift Platform Engineer to manage enterprise Linux platforms and Red Hat OpenShift Container Platform environments.

The role focuses on RHEL system administration and OCP cluster administration, with responsibilities for security hardening, vulnerability remediation, and operational governance across containerised workloads and integration platforms like IBM MQ.

Qualifications

• Strong hands-on experience administering RHEL 8/9 in enterprise environments.
• Knowledge of OS patching, DNF/YUM, SELinux, firewalld, auditd, and hardening.
• Experience with RHEL EUS and lifecycle management.
• Experience with RHEL subscriptions, entitlements, and Satellite.
• Knowledge of CIS/DISA benchmarks and Linux hardening.
• Exposure to image-based deployments and RHEL Image Mode/Bootc.
• Hands-on OpenShift Container Platform 4.x administration.

Responsibilities

• Own and maintain the enterprise RHEL OS fleet supporting OCP nodes and non-containerised servers.
• Plan and execute RHEL OS patching cycles and kernel upgrades.
• Perform RHEL package management and OS version upgrades.
• Implement and validate OS hardening per CIS/DISA benchmarks and security standards.
• Configure SELinux, firewalld, auditd, and cryptographic policies.
• Troubleshoot system-level issues and storage/networking performance.
• Manage OCP deployments, clustering, and lifecycle management.
• Administer RBAC, SCCs, networking, and storage in OpenShift.
• Support image vulnerability scanning and registry management.
• Support JVM and container resource tuning for Java workloads.

Skills

RHEL Administration

OpenShift 4.x

Kubernetes

Security hardening

DevSecOps

Tools

DNF/YUM

Red Hat Satellite

Quay/Mirror Registry

Nessus

IBM MQ

Job description

Elliott Moss Consulting Pte. Ltd. is seeking an experienced RHEL & OpenShift Platform Engineer to manage enterprise Linux platforms and Red Hat OpenShift Container Platform environments.

The role focuses on RHEL system administration and OCP cluster administration, with responsibilities for security hardening, vulnerability remediation, and operational governance across containerised workloads and integration platforms like IBM MQ.