zLinux Middleware Administrator

Role: zLinux Middleware Administrator

Company Name : WillWare Technologies

Experience : 7 Years

Work Model : Hybrid / Fulltime

Work Time :7 AM-4 PM / 4 PM-1 AM

Work Location : Chennai / Bangalore

Roles & Responsibilities:

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.

Manage persistent storage networking and OpenShift Service Mesh.

Automate deployments using Helm charts Ansible and CI/CD pipelines.

Monitor and optimize OpenShift cluster performance scaling and resource allocation.

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.

Enforce best practices for WebSphere and OpenShift security hardening.

Perform vulnerability assessments patch management and compliance audits for middleware technologies.

Set up WebSphere Network Deployment (ND) clusters for high availability.

Configure multi-instance queue managers and failover strategies for IBM MQ.

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.

Integrate middleware logging and monitoring with Splunk ELK and Grafana dashboards.

Diagnose and resolve middleware performance issues application failures and system crashes.

Troubleshoot OpenShift cluster issues pod failures and networking problems.

Analyze logs from WebSphere IHS and MQ to identify root causes and implement fixes.

Provide 24/7 on-call support for production environments (if required).

Work closely with application developers DevOps teams network engineers and security teams.

Maintain detailed technical documentation runbooks and knowledge base articles.

Participate in capacity planning system upgrades and middleware roadmap discussions.

Required Skills:

IBM Z/LinuxOpenShiftWebSphereIBM MQHTTP ServerHelm charts