Job Description

Job Purpose:

The OpenShift Administrator is responsible for designing, deploying, securing, and maintaining OpenShift 4.x clusters and Linux systems across development, staging, and production environments. The role supports DevSecOps, ensures system reliability, and enables scalable application delivery across hybrid or on-premises infrastructure.

Key Responsibilities:

Core Technical Duties

Deploy and maintain high-availability OpenShift 4.x clusters in on-prem, hybrid, or private cloud setups. Manage OpenShift components: nodes, namespaces, operators, volumes, services, and ingress. Automate deployments using GitOps tools (ArgoCD, Flux); integrate with CI/CD (Jenkins, GitLab CI, Tekton). Configure service mesh, ingress, and network policies for secure microservices. Administer RHEL/CentOS/AlmaLinux systems for performance, stability, and security. Implement Helm charts, custom resources, monitoring (Prometheus, Grafana), and logging (EFK). Enforce security via RBAC, SCCs, SELinux, TLS, firewalls, image scanning (Trivy, Clair).

Automation & Maintenance

Use Ansible, Terraform, Bash/Python to automate provisioning and maintenance. Manage Linux services (DNS, LDAP, SSH, systemd, logrotate, repositories). Perform patching, upgrades, and health checks for OpenShift and Linux infrastructure.

Collaboration & Support

Work closely with DevOps, Security, and Networking teams to ensure platform compliance. Provide onboarding support and guidance to application teams using OpenShift. Participate in infrastructure planning, technical reviews, and vendor evaluations.

Standard Duties

Comply with organizational policies, procedures, and standards. Participate in incident, problem, and change management processes. Perform other duties as assigned by the reporting manager.

Requirements:

Bachelor's degree in Computer Science, Information Systems, or equivalent experience. 5-8 years in Linux system administration and OpenShift cluster management. Proven expertise in production-grade OpenShift 4.x environments. Expert: OpenShift 4.x, Kubernetes Advanced: Linux (RHEL/CentOS), Ansible, Helm, GitOps, Security Hardening Intermediate: CI/CD tools, Terraform, Prometheus, ELK, Networking, Container Security Proficient in written and spoken English

Disclaimer:

CodeNinja is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, & performance.