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Jobs in Singapore   »   Jobs in Singapore   »   Senior Middleware Administrator
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Senior Middleware Administrator

Ikigai Enablers Pte. Ltd.

Experience Level: 8+


We are looking for a skilled Senior Middleware Administrator with extensive experience in WebLogic, WebSphere, JBoss, and other middleware technologies to join our dynamic team.


Job Summary:The Senior Middleware Administrator will be responsible for managing and maintaining middleware environments in both production and non-production environments. The ideal candidate should have solid experience in middleware technologies such as WebLogic, WebSphere, JBoss, and IBM MQ, with a proven ability to deploy, configure, troubleshoot, and upgrade various application servers.


Key Responsibilities:

  • Manage, install, configure, and upgrade WebLogic, WebSphere, JBoss, Apache, and Tomcat environments in production and non-production systems.
  • Perform system administration tasks, including patch management, vulnerability remediation, and MAS655 audit closure in collaboration with security teams.
  • Implement and maintain high-availability clustered environments for application servers.
  • Administer and configure IBM MQ systems, performing tasks such as patching, queue management, and monitoring channel status.
  • Ensure application deployments are successful, deploying WAR, JAR, and EAR files via DMGR console, Jenkins, and UDeploy.
  • Perform SSL certificate management, including generation and renewal of certificates (P12, .kdb, .sth files).
  • Conduct troubleshooting and root cause analysis on middleware issues, such as server hang states, high CPU, server crashes, and other performance-related issues.
  • Provide technical leadership during incident management and production system outages, working closely with cross-functional teams including UNIX and application development.
  • Support AIX to Linux migrations and other platform migration activities.
  • Develop and maintain scripts for middleware environment automation and maintenance.
  • Follow ITIL processes, ensuring compliance with SLAs and managing the lifecycle of support incidents.
  • Drive weekend patching activities, coordinating with UNIX teams, and providing post-patch sanity testing.

Required Skills:

  • Proven experience with WebLogic (11g, 12c, 14c), WebSphere (7.x, 8.x, 9.x), IBM MQ (9.x), JBoss (7.4), Tomcat, and Apache (2.x).
  • Expertise in clustering, load balancing, and failover for middleware systems.
  • Solid understanding of security implementation, including global security setup via LDAP, SSL/TLS configurations, and cert management.
  • Experience with monitoring tools such as Nagios, and project-specific in-built tools.
  • Familiarity with cloud technologies (Azure preferred, Azure-104 certified).
  • Proficiency with tools like ServiceNow, HP QC, Putty, WinSCP, Jenkins, and Oracle Toad.
  • Knowledge of scripting and automation techniques for middleware management.
  • Strong troubleshooting skills, especially in high-pressure production environments.

Qualifications:

  • Masters in Computer Science or Computer Applications (MCA) or equivalent
  • Minimum of 8 years of relevant experience .
  • Azure-104 certified is a plus.

Desired Soft Skills:

  • Strong problem-solving and critical-thinking abilities.
  • Effective communication skills, with experience in coordinating between development and support teams.
  • Ability to handle multiple projects and tasks with attention to detail and meeting tight deadlines.
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