Enterprise Middleware System Administrator

1 week ago

Singapore beBeeSystemAdministrator Full time $90,000 - $120,000

System Administrator

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As a key member of our IT team, you will be responsible for administering and supporting Java application middleware across multiple environments.

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Key responsibilities include:

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  • Environment Build & Configuration">
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    • Install, configure, and maintain Tomcat instances, including service wrappers, JVM settings, thread pools, virtual hosts, context paths, HTTP/HTTPS connectors.">
    • Configure WebLogic domains, admin/managed servers, clusters, data sources (JDBC), JMS, connection pools, and node managers.">
    • Implement SSL/TLS, manage keystores/certificates, and enforce secure cipher suites and protocols.">
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  • Deployment & Release Support">
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    • Support deployment of Java applications (WAR/EAR) across multiple environments.">
    • Integrate application services with APIs, databases, and SFTP endpoints.">
    • Automate repeatable tasks (startup/shutdown, deployments, health checks).">
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  • Operations, Monitoring & Troubleshooting">
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    • Proactively monitor application and middleware health; configure logging and log rotation.">
    • Integrate and tune alerts with tools such as Splunk (logging/observability) and Tenable (vulnerability posture).">
    • Diagnose and resolve incidents related to JVM performance, memory leaks, thread contention, connection pooling, and deployment failures.">
    • Implement and maintain high availability & load balancing configurations.">
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  • Security & Compliance">
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    • Apply OS and middleware security patches and updates on a regular cadence (Windows & Linux).">
    • Remediate vulnerabilities; maintain configuration baselines aligned to security standards and hardening guides.">
    • Manage certificate renewals and secrets/keystore hygiene.">
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  • Platform & Infrastructure Administration">
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    • Support Windows Server services (WSUS, basic file/NTFS permissions) and Linux administration for middleware hosts.">
    • Active Directory basics: user/groups, GPO awareness, DNS entries relevant to app hosting.">
    • Manage Symantec Endpoint Protection Manager (SEPM) policies on servers.">
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  • DevOps & Automation">
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    • Use GitLab (CI/CD) for pipeline-driven deployments where applicable.">
    • Leverage Docker for packaging middleware tools/utilities; use Terraform for IaC in supported environments.">
    • Contribute to runbooks, SOPs, and environment documentation.">
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  • Service Management">
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    • Handle user requests and operational queries within SLAs.">
    • Participate in problem reviews/RCAs and drive continual service improvement.">
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Required Qualifications & Skills">
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  • 3-6 years' hands-on experience administering Tomcat and/or WebLogic in enterprise environments.">
  • Strong knowledge of Java application hosting, JVM tuning, JDBC data sources, and web security (SSL/TLS, certs, ciphers).">
  • Proficiency with SQL fundamentals for connectivity/health checks (any RDBMS).">
  • Solid experience with Linux (RHEL/CentOS/Ubuntu) and Windows Server basics.">
  • Experience with logging/monitoring (e.g., Splunk) and vulnerability tooling (e.g., Tenable).">
  • Familiarity with GitLab CI/CD, Docker, and Terraform (working level).">
  • Scripting in Bash and/or PowerShell for automation.">
  • Strong troubleshooting, documentation, and stakeholder communication skills.">
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