Worked as a Developer for AT&T Billing Data Services (BDS) application team for 3.5 Years, where we dealt with two Legacy applications of the Client which involved the Enhancement of these Applications According to the Client's Requirements.Served as a Software Developer in design, coding, and testing relating to the Enterprise Cloud Migration Initiative. This initiative moved the application from on-premise LINUX servers to Azure Cloud VMs. As part of the migration, applications were ported from WebSphere to the Wildfly application server. 25+ applications, consisting of web services and EJBs, were included in the migration.As part of the Development team, I Deal with the Configuration and Deployment of the Application for Multiple Releases. We developed various batch jobs for the application to facilitate automated connections with multiple interfaces, eliminating the need for manual intervention. Notably, I independently created a couple of batch jobs from the ground up for a new application within a remarkable two-week timeframe, marking a significant achievement.