Senior Middleware Administrator

3 days ago


Singapore IKIGAI ENABLERS PTE. LTD. Full time
Job Summary

We are seeking a highly skilled Middleware Expert to join our team at IKIGAI ENABLERS PTE. LTD. The ideal candidate will have extensive experience in managing and maintaining middleware environments in both production and non-production environments.

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 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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