Job Description:
Role Summary
We are seeking a Senior Oracle WebLogic Administrator with deep expertise in deploying, managing, and optimizing Oracle WebLogic Server and Oracle Fusion Middleware across on-premises and OCI-hosted environments. This role owns the full middleware lifecycle from domain provisioning, clustering, and performance engineering to patching, security hardening, and cloud migration supporting mission-critical Oracle application stacks including E-Business Suite, Siebel CRM, Oracle SOA Suite, Oracle Service Bus (OSB), and Oracle Integration middleware.
Key Responsibilities
WebLogic Domain Administration
Install, configure, and manage Oracle WebLogic Server (12c, 14c) across development, staging, and production environments.
Design and administer WebLogic domains including Admin Servers, Managed Servers, clusters, machine configurations, and Node Managers.
Configure and manage JDBC data sources, connection pools, JMS resources (queues, topics, connection factories), and work managers.
Administer WebLogic security realms authentication providers (LDAP, Active Directory, OAM), authorization policies, SSL/TLS certificates, and keystores.
Manage WebLogic deployments EAR/WAR/JAR lifecycle, staged/nostage deployments, versioned deployments, and rollback procedures.
Configure coherence clusters, session replication, and distributed caching where applicable.
Oracle Fusion Middleware Administration
Administer Oracle SOA Suite SOA composites, BPEL processes, Mediator, Human Workflow, and Business Rules across SOA clusters.
Manage Oracle Service Bus (OSB) proxy/business services, message pipelines, transformations, routing rules, and throttling configurations.
Administer Oracle HTTP Server (OHS), Oracle Traffic Director (OTD), and Oracle Web Cache for web-tier load balancing and request routing.
Manage Oracle Identity and Access Management (OAM, OIM, OUD, OID) middleware components on WebLogic.
Administer Oracle Business Intelligence (OBIEE/OAS) and Oracle Forms/Reports middleware deployments.
Manage Oracle Enterprise Manager Fusion Middleware Control (EM FMWC) for monitoring, diagnostics, and configuration management.
Oracle Application Stack Support
Manage WebLogic and Fusion Middleware tiers underpinning Oracle E-Business Suite EBS WebLogic domains, Oracle HTTP Server, Forms/Reports services, and concurrent processing infrastructure.
Administer middleware for Siebel CRM Siebel Application Interface (AI), Siebel Gateway, Siebel Server components, and WebLogic-hosted Siebel web services.
Support Oracle SOA/OSB/AIA integration middleware composite deployment, fault management, adapter configurations (DB, File, FTP, JMS, REST), and endpoint lifecycle.
Manage middleware for Oracle BRM BRM web services gateway, custom pipeline integration endpoints, and WebLogic-hosted billing APIs.
High Availability & Disaster Recovery
Design and manage WebLogic clustering for horizontal scalability and active-active/active-passive HA topologies.
Configure and maintain Oracle Global Load Balancer (GLB), Oracle Traffic Director, and hardware/software load balancers (F5, HAProxy) for WebLogic tier.
Implement WebLogic whole-server migration, service migration, and singleton services for automatic failover.
Design and execute DR runbooks for WebLogic/FMW environments including cross-site Data Guard integration, rsync-based replication, and OCI-based DR strategies.
Manage and test failover/switchover procedures with documented RTO/RPO alignment.
Performance Engineering & Tuning
Tune JVM parameters (heap sizing, garbage collection G1GC, ZGC), thread pools, work managers, and execute queues for optimal throughput.
Monitor and optimize WebLogic performance using WLST, WLDF (WebLogic Diagnostic Framework), Flight Recorder, and thread dump analysis.
Analyze and resolve stuck threads, memory leaks, connection pool exhaustion, and session management issues.
Conduct capacity planning sizing WebLogic domains, JVM instances, and…