WebSphere Application Server Administrator

Position : WebSphere Application Server Administrator

Experience : 5-7 years

Relevant Experience : 4-5 years

Job Type : Full-time

Job Summary :

We are seeking a skilled and experienced WebSphere Application Server Administrator with 57 years of experience in managing enterprise-level application environments. The ideal candidate will be a technical expert with a strong focus on administration, configuration, and performance tuning for application servers like WebLogic and WildFly/JBoss. This role requires deep expertise in Java/J2EE middleware, robust scripting skills for automation, and a solid understanding of networking and security to ensure the reliability and scalability of our applications.

Key Responsibilities :

Application Server Management : Take full ownership of the end-to-end lifecycle of application servers, including WebLogic and WildFly/JBoss. This includes installation, configuration, clustering for high availability, application deployments, and proactive performance tuning to meet service level agreements (SLAs).

Java/J2EE Middleware Expertise : Apply in-depth knowledge of Java/J2EE middleware components such as EJBs and JMS. You must be proficient in troubleshooting and managing the complexities introduced by Java runtime versions 8 through 17, including serialization impacts.

Messaging System Administration : Configure, tune, and troubleshoot enterprise messaging systems like JMS and ActiveMQ, ensuring reliable and asynchronous communication between applications.

Automation & Scripting : Develop and maintain automation scripts using Shell/Unix scripting and configuration management tools like Ansible and Puppet to streamline environment provisioning and management tasks.

Networking & Security : Administer and configure critical networking and security components. This includes managing SSL/TLS certificate lifecycles, configuring load balancers, and setting up firewall and proxy rules.

Database Integration : Configure and manage database integrations with application servers, including setting up JNDI datasources and optimizing connection pooling.

Performance Monitoring & Troubleshooting : Proactively monitor server performance using tools to analyze server logs, thread dumps, and heap dumps. You will be responsible for identifying and resolving performance bottlenecks and stability issues.

Continuous Integration/Continuous Deployment (CI/CD) : Manage build and deployment tools, including Maven/Ant, Jenkins, and GitHub. Experience with pipeline automation is a plus.

OS & Infrastructure Management : Provide administration support for Linux/Unix operating systems in on-premises environments.

Required Skills & Qualifications :

- 5-7 years of professional experience with a minimum of 4-5 years of relevant experience as an application server administrator.

- Strong, hands-on experience with WebLogic and WildFly/JBoss application servers.

- In-depth knowledge of Java/J2EE middleware, EJBs, JMS, and an understanding of the evolution of Java runtime versions 817.

- Proven experience with messaging systems such as JMS and ActiveMQ.

- Strong proficiency in scripting and automation using Shell/Unix scripting and tools like Ansible or Puppet.

- Expertise in networking and security configuration, including SSL/TLS certificate management and load balancing.

- Solid Linux/Unix OS administration skills.

- Experience with database integration on application servers.

- A strong ability to monitor and troubleshoot application server health and performance.