System Administration & Platform Engineer - RHEL & OCP

System Administrator & Platform Engineer (RHEL & OpenShift Specialist) 12-Month Contract - renewable based on project demand Singapore - Onsite Overview: Seeking a administrator and engineer with expertise in Red Hat Enterprise Linux (RHEL) and OpenShift Container Platform (OCP) to manage enterprise infrastructure, container platforms, security, and operational support. Key Responsibilities

• Administer and maintain RHEL 8/9 environments supporting OpenShift clusters and enterprise application servers.
• Execute OS patching, lifecycle upgrades, subscription management, system hardening, SELinux enforcement, and compliance activities.
• Deploy, upgrade, and manage OpenShift 4.x clusters, including worker nodes, control plane, certificates, RBAC, SCCs, quotas, networking, and storage.
• Manage Machine Config Operator (MCO) configurations, OS customisations, kernel parameters, SSH hardening, and NTP settings.
• Support Quay registry administration, image lifecycle management, vulnerability remediation, and container security practices.
• Provide platform support for enterprise applications such as Pega, WebSphere, IBM MQ, APIs, SFTP, and web services integrations.
• Perform performance tuning for containerised Java workloads, JVM optimisation, monitoring, backup, recovery, and operational governance.
• Collaborate with architecture and delivery teams on cloud-native, DevSecOps, CI/CD, IaC, and AWS-related initiatives.

Required Skills & Experience

• Strong hands-on experience in RHEL System Administration within enterprise production environments.
• Expertise in dnf/yum package management, patching, SELinux, CIS-based hardening, EUS lifecycle management, and Satellite administration.
• Proven experience deploying and administering OpenShift 4.x clusters and Day-2 operations.
• Knowledge of OpenShift networking, ingress, routes, storage classes, PV/PVC management, RBAC, SCCs, network policies, and security controls.
• Experience with Quay Registry, image scanning, vulnerability management, and air-gapped environments.
• Understanding of Kubernetes, microservices architecture, container lifecycle management, and enterprise integration platforms.
• Working knowledge of IBM MQ administration, high availability, messaging infrastructure, and troubleshooting.
• Exposure to AWS services including IAM, S3, CloudWatch, and hybrid cloud environments.

Additional Requirements

• Minimum 3 years of experience within platform engineering, infrastructure, cloud, or technical architecture environments. • Applicants must be Singapore Citizens to meet project requirements.