geeziadeh

Working on a Java-based billing platform team that acts as a bridge between internal systems and an external billing provider, focusing on payment workflows, rolling out new states, and integration between internal systems and external financial providers. • Created RESTful API endpoints to support payment method changes, cost center logic, and dynamic business validations. • Implemented dynamic business logic using Drools with DRT templates and CSV data mapping, enabling flexible and scalable decision automation • Automated SQL schema versioning and data setup using Flyway, including adding indexes on high-traffic database tables to improve query performance. • Gained hands-on experience with Kafka by utilizing listeners for various payment-related events, supporting asynchronous service communication. • Applied TDD practices to ensure testability and clean code. Implemented the CI/CD pipeline using Jenkins and Groovy. Monitored the performance of different services on Datadog, identified the root cause for unusual spike • Made code reviews to improve test coverage and eliminate performance issues.