RHEL & OpenShift Platform Engineer
The Platform Engineer will manage and maintain RHEL OS fleets and OpenShift Container Platform (OCP) clusters, ensuring system security, performance, and operational stability. The role involves patching, cluster administration, and supporting containerized enterprise applications.
- Compensation
- SGD 5K–SGD 6.7K / mo
- Location
- Singapore
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Contract
- Experience
- Not specified
- Category
- Devops
- Posted
Skills
Must have
- Hands-on experience administering RHEL 8/9 in enterprise production environments
- Proficiency in OS-level patching, package management, SELinux enforcement, and system hardening
- Experience with RHEL Extended Update Support lifecycle management and version upgrades
- Familiarity with RHEL subscription management, satellite server, and image-based deployments
- Hands-on experience deploying, configuring, and administering OCP 4.x clusters
- Proficiency with OCP Day-2 operations including node management, MCO, and cluster upgrades
- Experience with OCP networking, storage, and RBAC
- Familiar with OCP security hardening, SCC policies, and image vulnerability scanning
- Experience with Quay registry administration
Nice to have
- Designing and operating multi-tier containerised architectures on OCP/Kubernetes
- Working knowledge of IBM MQ messaging
- Familiar with microservices architecture, API gateway integration, and container image lifecycle management
Full description
Avensys is a reputed global IT professional services company headquartered in Singapore. Our service spectrum includes enterprise solution consulting, business intelligence, business process automation, and managed services. Given our decade of success, we have evolved to become one of the top trusted providers in Singapore and service a client base across banking and financial services, insurance, information technology, healthcare, retail, and supply chain.
We are currently looking to hire an TA and Platform Engineer (RHEL & OCP Specialist). This is an exciting opportunity to expand your skill set, achieve job satisfaction, and enjoy a healthy work-life balance. More details are below.
JOB TYPE
12 Months Contract
ROLES AND RESPONSIBILITIESRHEL Platform Management (Primary Focus)
- Own and maintain the RHEL OS fleet underpinning OCP worker/control-plane nodes and non-containerised application servers
- Plan and execute RHEL OS patching cycles (EUS channel management, kernel upgrades, reboot sequencing) with minimal service disruption
- Implement and validate OS hardening benchmarks — SELinux policies, firewalld rules, auditd configuration, and cryptographic policy settings
- Troubleshoot system-level issues: kernel parameters, resource limits (ulimits, cgroups), storage mounts (NFS, iSCSI, SMB/CIFS PVs on OCP)
- Manage RHEL subscriptions, entitlements, and satellite/image registries
OCP Cluster Administration (Primary Focus)
- Deploy, upgrade, and maintain OCP 4.x clusters — including control plane, etcd health, and worker node lifecycle
- Configure and manage OCP Machine Config Operator (MCO) for node-level OS customisation: chrony NTP, SSH hardening, kernel arguments, and custom MachineConfigs
- Manage cluster certificates, ingress/route configurations, HAProxy timeout tuning for long-running enterprise workloads (e.g., Pega BIX, batch jobs)
- Administer Quay mirror registry — image mirroring, vulnerability scanning results, VAPT remediation for bundled components (e.g., jQuery CVEs)
- Implement OCP RBAC, SCCs, network policies, and resource quotas across multiple namespaces and project environments
- Support JVM and container resource tuning for Java workloads on OCP (heap sizing, Metaspace limits, G1GC flags, container memory budgeting)
Application Platform & Integration Support
- Take ownership of one or more application platforms (e.g., Pega Infinity, WebSphere, IBM MQ) — covering setup in HA mode, application patching, and ongoing operational support
- Participate in architecture sessions with build teams, advising on integration points (web services, MQ, SFTP, API gateway)
- Support container provisioning, image lifecycle, and deployment of containerised services across DEV / SIT / UAT / PROD environments