jobs in Exasoft

Exasoft Hiring! Full Time Platform administrator (Redhat OCP) in - Ricebowl

Platform administrator (Redhat OCP)

Singapore

Share
Save

Working Location

  • Singapore

Job Description

Responsibilities

Description

  • 5 years experience in Openshift
  • Redhat OCP platform administrator: Setup, Configuration, Upgrade,
  • Ansible automation
  • CI/CD pipelines management

Redhat OCP certification.


Sharing the detailed scope:

Key Responsibilities


1. OpenShift Platform Engineering

Design and implement OCP cluster architecture, including multi-tenancy models (namespace isolation, network policies, resource quotas, RBAC per business unit/tenant)

Perform end-to-end node installation and configuration (master/control plane, worker, infra nodes) across bare-metal, virtualized (VMware), or hybrid environments

Plan and execute cluster upgrades (minor and major versions) with minimal downtime, including operator compatibility validation and rollback planning

Manage cluster networking (SDN/OVN-Kubernetes), ingress/routes, and troubleshoot connectivity issues

Configure and manage persistent storage integration (ODF, NFS, CSI drivers, enterprise SAN/NAS) for stateful workloads, ensuring appropriate access modes (RWO/RWX) per application need


2. Linux Infrastructure Management

Install, configure, and harden RHEL/Linux systems underpinning OCP nodes and supporting infrastructure

Manage patch cycles (OS and security patching) across production and non-production environments, including air-gapped/isolated networks where applicable

Maintain system performance, capacity planning, and infrastructure documentation


3 DevOps & CI/CD

Design, implement, and manage CI/CD pipelines (Jenkins, Tekton, GitLab CI, or similar) for application deployment to OCP

Implement GitOps practices (ArgoCD/OpenShift GitOps) for declarative, version-controlled deployments across dev/staging/prod

Integrate security scanning (SAST/DAST/SCA, container image vulnerability scanning) into pipelines

Manage secrets securely within pipelines (Vault, Sealed Secrets, OCP-native secrets management)

Support release strategies (blue-green, canary) and rollback procedures


4 Automation

Develop and maintain Ansible playbooks/roles for OCP node provisioning, configuration management, and repetitive operational tasks

Drive automation-first practices to reduce manual intervention and improve consistency across environments


5. Security & Compliance

Apply CIS Benchmark hardening standards to OCP nodes, RHEL hosts, and container images

Conduct regular vulnerability assessments (infrastructure and image-level) and remediate findings within SLA

Pod security standards, and image signing/approval policies

Support audit and compliance requirements.

Important Information

Never provide your bank or credit card details when applying for jobs. Do not transfer any money or complete unrelated online surveys. If you see something suspicious, Report this Job ad.

Learn More