Job Title: OpenShift L2 Engineer – Day 2 Operations

4 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:

We are seeking a highly skilled and motivated OpenShift L2 Engineer with a minimum of 5 years of relevant experience in infrastructure/platform operations, including 3+ years of hands-on administration of Red Hat OpenShift 4.x in enterprise production environments. The engineer will be responsible for managing Day 2 operations of OpenShift clusters, including core services like ACS (Advanced Cluster Security) , ACM (Advanced Cluster Management) , Quay , and OpenShift Service Mesh , while actively supporting application deployment workflows and CI/CD practices.

Key Responsibilities:

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

o Cluster health monitoring, node scaling, patching, and upgrades

o Certificate management, storage troubleshooting, and network policy enforcement

· Manage and support platform services:

o ACS – Vulnerability management, runtime security, and compliance policy enforcement

o ACM – Multi-cluster governance, policy management, and cluster lifecycle automation

o Quay – Secure and manage container image registries with vulnerability scanning

o Service Mesh (Istio) – Service-to-service communication, observability (Kiali, Jaeger), and mTLS enforcement

· Provide application deployment support :

o Troubleshoot CI/CD issues with Tekton, Jenkins, ArgoCD, or GitHub Actions

o 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:

o 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:

o ACS for container security and runtime policies

o ACM for multi-cluster operations and policy governance

o Quay registry for secure image lifecycle management

o 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:

o EX280 – OpenShift Administration

o 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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