Sivakumar Dhesingu
Chennai
Summary
WebLogic Administrator with 4+ years of experience in managing, configuring, and supporting Oracle WebLogic Server environments in production, test, and development setups. Strong expertise in installation, configuration, deployment, troubleshooting, patching, and performance tuning. Hands-on experience with Linux/Unix systems, JVM tuning, SSL configuration, monitoring, and incident management. Proven ability to support business-critical applications with high availability and minimal downtime.
Overview
5
5
years of professional experience
Work History
WebLogic Administrator
Infosys
Chennai
02.2022 - Current
- Installed, configured, and administered Oracle WebLogic Server domains across Dev, Test, UAT, and Production environments.
- Created and managed Admin Servers, Managed Servers, clusters, and performed environment health checks.
- Deployed and maintained EAR/WAR applications ensuring minimal downtime.
- Configured JDBC Data Sources, JMS queues/topics, connection pools, and security realms.
- Performed WebLogic patching and JDK upgrades as per Oracle recommendations.
- Handled SSL certificate installation and renewal for secure communication.
- Monitored server performance, analyzed heap and thread dumps, and tuned JVM parameters.
- Troubleshot startup failures, memory leaks, stuck threads, and deployment issues.
- Provided 24/7 production support and followed ITIL change and release processes.
- Deployed and maintained EAR/WAR applications ensuring minimal downtime.
- Performed WebLogic patching and JDK upgrades as per Oracle recommendations.
- Monitored server performance, analyzed heap and thread dumps, and tuned JVM parameters.
- Troubleshot startup failures, memory leaks, stuck threads, and deployment issues.
- Provided 24/7 production support and followed ITIL change and release processes.
- Coordinated with application, database, and infrastructure teams to resolve critical issues.
Graphics Designer
CloudNow Technologies
Chennai
04.2021 - 11.2021
- Created UX flows, wireframes, prototypes, and high-fidelity mockups.
- Conducted usability research and developed user personas and task scenarios.
- Collaborated with stakeholders using Figma and Adobe XD.
- Ensured seamless design-to-development handoff with engineering teams.
- Developed multi-platform style guides improving accessibility and usability by 30%.
- Researching competitive products to assess usability and user experience.
- Creating and following design guidelines, best practices, and standards.
- Created wireframes, prototypes, and high-fidelity mock-ups for various digital products.
- Developed a multi-platform style guide, which improved user experience and increased web accessibility by 30%.
Education
Bachelor's Degree - Electrical and Electronics Engineering
Chennai Institute of Technology
Chennai04-2019
Skills
- Oracle WebLogic Server 12c/14c
- Oracle Fusion Middleware
- Linux and Unix systems
- Java development
- JDK and JVM management
- Apache HTTP Server administration
- Domain and server management
- Clustering and load balancing
- SSL configuration
- JDBC and JMS integration
- EAR/WAR deployment strategies
- Log analysis and monitoring
- L2 production support
- New Relic performance monitoring
- Catchpoint and Hawkeye tools
- ELK stack utilization
- Shell scripting expertise
- System patching and updates
- Performance tuning techniques
- Incident and change management strategies
- ITIL framework knowledge
- Incident management
- Multitasking Abilities
- Technical troubleshooting
- Monitor performance
- Backup and recovery
- Shell scripting
- Load balancing
- Docker/Kubernetes
Personal Information
Title: WebLogic Administrator
Roles And Responsibilities
- WebLogic Installation & Configuration
- Domain & Cluster Management
- Application Deployment
- Production Support & Troubleshooting
- Performance Monitoring & JVM Tuning
- Security & SSL Configuration
- Patching & Upgrades
Accomplishments
Recognized for maintaining high availability and zero-downtime support for WebLogic environments.
Declaration
I hereby declare that the above-mentioned information is true to the best of my knowledge and belief
Place: Chennai
Signature: Sivakumar Dhesingu
Timeline
WebLogic Administrator
Infosys
02.2022 - Current
Graphics Designer
CloudNow Technologies
04.2021 - 11.2021
Bachelor's Degree - Electrical and Electronics Engineering
Chennai Institute of Technology