Infrastructure and Middleware Specialist (Middleware support, Weblogic, JBoss, Apache)

EVYONIC SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

A leading technology firm in Singapore is seeking an experienced middleware support specialist to manage critical applications in the banking sector. The role involves maintaining high-availability environments and troubleshooting complex issues. Candidates should have over 13 years of IT operations experience, particularly in middleware roles, with deep expertise in Weblogic and SSL certificate management. This position offers the opportunity to work on high-stakes projects within a fast-paced environment.

Qualifications

• 13+ years of IT infrastructure and system operations experience, including minimum 10+ years in middleware support roles.
• Deep expertise in Weblogic Server administration (9.x–12c) in clustered, high-transaction environments.
• Proven track record supporting critical production applications in the banking and financial sector.

Responsibilities

• Own end-to-end middleware support and operations for banking applications.
• Manage and maintain high-availability environments with zero-downtime transitions.
• Troubleshoot complex middleware and application issues using diagnostics.

Skills

Weblogic Server administration

Websphere MQ

JBoss

Unix scripting

SSL certificate management

Job description

Responsibilities:

• Own end-to-end middleware support and operations for complex banking applications handling critical customer authentication, payment processing, and account services.
• Manage and maintain 50+ high-availability environments including SIT, UAT, NFT, and PROD, ensuring consistent configurations and zero-downtime transitions.
• Administer Weblogic, JBoss, and Websphere MQ application servers — including instance management, patching, log analysis, heap tuning, and certificate renewals.
• Handle SSL/TLS configurations, certificate lifecycle management (Apache, iPlanet, JBoss), and secure file transfer setup (SSH, SCP, SFTP).
• Coordinate across Unix, Database, and Application teams for infrastructure patching, server hardening, and environment builds.
• Troubleshoot complex middleware and application issues using thread/core dumps, JVM diagnostics, and platform-specific tools.
• Design and implement platform migration strategies, environment replication, and cross-system integrations.
• Ensure full compliance with financial regulations and security protocols, including traceability of file transfers and transaction integrity across systems.
• Actively monitor and maintain system health across Solaris, Linux, and legacy Windows servers.
• Collaborate with release management and deployment teams to support safe go-lives in production and pre-prod environments.

Requirements:

• 13+ years of IT infrastructure and system operations experience, including minimum 10+ years in middleware support roles.
• Deep expertise in Weblogic Server administration (9.x–12c) in clustered, high-transaction environments.
• Solid working experience with Websphere MQ, JBoss, Apache, and iPlanet.
• Strong command-line and scripting skills on Unix (Solaris/Linux) for diagnostics and automation.
• Proven track record supporting critical production applications in the banking and financial sector especially payment gateways, transaction processors, or account servicing platforms.
• Demonstrated capability in SSL certificate management, WebServer-to-AppServer security configurations, and performance tuning.
• Experience handling environment replication, migration, and application onboarding across environments.
• Hands-on experience with monitoring tools, server health checks, and proactive incident management in 24/7 environments