Job Title: Openshift L2 Engineer

2 weeks ago

Singapore KRISE SOLUTIONS PTE. LTD. Full time

**Location**:Singapore - Onsite

**Job Type**:Full-Time

**Duration**:12Months renewable
**Experience Required**:5+ years of relevant experience**, including **3+ years of hands-on administration of Red Hat OpenShift 4.x**

**Job Summary**:
**Key Responsibilities**:

- Operate and maintain **Red Hat OpenShift 4.x**clusters with a focus on Day 2 operations:

- Cluster health monitoring, node scaling, patching, and upgrades
- Certificate management, storage troubleshooting, and network policy enforcement
- Manage and support platform services:

- **ACS**- Vulnerability management, runtime security, and compliance policy enforcement
- **ACM**- Multi-cluster governance, policy management, and cluster lifecycle automation
- **Quay**- Secure and manage container image registries with vulnerability scanning
- **Service Mesh (Istio)**- Service-to-service communication, observability (Kiali, Jaeger), and mTLS enforcement
- Troubleshoot CI/CD issues with Tekton, Jenkins, ArgoCD, or GitHub Actions
- Assist development teams with onboarding and deployment best practices
- Troubleshoot and resolve production incidents, participate in root cause analysis (RCA), and create documentation
- Implement platform backup, disaster recovery (e.g., **Velero**), and availability strategies
- Collaborate with Red Hat and vendor support to resolve complex platform issues
- Maintain accurate and up-to-date documentation (SOPs, runbooks, RCA reports, etc.)

**Required Skills & Experience**:

- **5+ years of relevant experience**in infrastructure/platform operations, including:

- **3+ years of hands-on experience administering Red Hat OpenShift 4.x**
- Strong understanding of Kubernetes core concepts, Operators, Helm, CRDs, and container orchestration
- Experience in:

- **ACS**for container security and runtime policies
- **ACM**for multi-cluster operations and policy governance
- **Quay**registry for secure image lifecycle management
- **OpenShift Service Mesh (Istio)**for service communication and tracing
- Linux administration (RHEL preferred) and strong familiarity with CLI tools
- Experience with GitOps and CI/CD tools: Tekton, ArgoCD, Jenkins, GitHub Actions
- Scripting/automation**:Bash**, **Python**, or **Ansible**
- Familiarity with observability and monitoring tools like Prometheus, Grafana, EFK, Loki

**Preferred Qualifications**:

- Red Hat Certifications:

- **EX280**- OpenShift Administration
- **EX288**- OpenShift Application Development
- Experience with backup tools like **Velero**, **Kasten**, or equivalent
- Understanding of compliance, DevSecOps, and secure platform operations in regulated industries (e.g., BFSI, healthcare)

**Soft Skills**:

- Strong analytical and troubleshooting skills
- Effective communicator with technical and non-technical teams
- Ability to work independently and collaboratively in a team environment
- Proactive in knowledge sharing and documentation

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