Mainframe SME zLinux Middleware Administrator

Required Technical and Professional Experience

• 8+ Years Experience zLinux Middleware Administrator.
• Install, configure, and manage OpenShift, WebSphere Application Server (WAS), IBM HTTP Server (IHS), and IBM MQ on IBM Z/Linux.
• Deploy and manage containerized applications using Kubernetes and OpenShift operators.
• Configure and maintain high availability (HA), clustering, and load balancing for all middleware components.
• Tune JVM settings, heap size, garbage collection, and thread pools for WebSphere applications.
• Optimize IBM MQ message flow, queue depth, and performance.
• Configure caching, compression, and load balancing in IHS for improved web performance.
• Use Splunk, ELK, Prometheus, Grafana, or IBM Tivoli Monitoring (ITM) for real-time system and application monitoring.
• Implement SSL/TLS encryption, LDAP authentication, OAuth, and RBAC policies across middleware components.
• Secure IBM MQ with SSL encryption, authentication, and message signing.
• Set up WebSphere Network Deployment (ND) clusters for high availability.
• Configure multi-instance queue managers and failover strategies for IBM MQ.

Preferred Technical and Professional Experience

• Implement OpenShift scaling policies for auto-scaling and redundancy.
• Ensure backup and recovery strategies using IBM Spectrum Protect (TSM).
• Develop Ansible playbooks, Python scripts, and shell scripts to automate administration tasks.
• Build and maintain CI/CD pipelines for WebSphere, OpenShift, and IBM MQ.
• Provide 24/7 on-call support for production environments (if required).
• Work closely with application developers, DevOps teams, network engineers, and security teams.