Middleware Administrator (JBoss / WebSphere / Apache Tomcat)

Hong Kong Unison Limited; Kuala Lumpur; On-site; MYR 90,000 - 150,000; Full time

Job summary

Hong Kong Unison Limited is seeking an experienced Middleware Administrator to manage enterprise application server environments including JBoss EAP, IBM WebSphere, and Apache Tomcat in Kuala Lumpur. You will install, configure, deploy WAR/EAR/JAR artifacts, perform JVM tuning, monitor performance, troubleshoot incidents, manage patches and upgrades, and document deployments for operations teams.

This role requires collaboration with development and IT operations to ensure reliable, scalable

Qualifications

• Experience installing, configuring and administering middleware servers.
• Experience deploying WAR/EAR/JAR applications.
• Strong troubleshooting and performance tuning skills.

Responsibilities

• Install, configure, and administer middleware servers.
• Deploy Java enterprise applications (WAR/EAR/JAR).
• Configure and manage JBoss domains/standalone servers.
• Manage WebSphere application server environments.
• Configure Tomcat instances and connectors.
• Monitor performance and troubleshoot issues.
• Perform JVM tuning and memory optimization.
• Handle server patching and upgrades.
• Support incidents and root cause analysis.
• Create deployment and operational documentation.

Skills

Java EE architecture

JVM tuning

WAR/EAR deployment

Performance troubleshooting

Enterprise middleware

Tools

JBoss EAP

IBM WebSphere

Apache Tomcat

Job description

Middleware Administrator (JBoss / WebSphere / Apache Tomcat)

We are looking for an experienced Middleware Administrator to manage enterprise application server environments including JBoss Enterprise Application Platform, IBM WebSphere Application Server, and Apache Tomcat.

The role involves installation, configuration, deployment, performance tuning, troubleshooting, and ongoing administration of enterprise middleware platforms.

Key Responsibilities

• Install, configure, and administer middleware servers
• Deploy Java enterprise applications (WAR/EAR/JAR)
• Configure and manage JBoss domains/standalone servers
• Manage WebSphere application server environments
• Configure Apache Tomcat instances and connectors
• Monitor server performance and troubleshoot issues
• Perform JVM tuning and memory optimization
• Manage server patching and upgrades
• Configure clustering and high availability
• Handle SSL certificate installation
• Support production incidents and root cause analysis
• Create deployment and operational documentation

Technical Skills Required

Middleware Platforms

• JBoss Enterprise Application Platform
• IBM WebSphere Application Server
• Apache Tomcat

Core Technical Knowledge

• Java EE architecture
• JVM tuning (Heap, GC tuning)
• WAR / EAR deployment
• Thread dumps / Heap dumps
• Application performance troubleshooting