Worked on backend enhancements and bug fixes across the bmuschko/rewrite and Apache CloudStack repositories, focusing on Java-based API development and integration. Addressed a version metadata parsing issue in rewrite by refining regular expression logic, ensuring accurate dependency version detection and more reliable upgrade flows. In CloudStack, delivered features to optimize load balancer creation and improve NSX SDK pagination, reducing unnecessary API calls and ensuring complete data retrieval. Fixed cross-process bugs affecting NSX NAT rule deletion, aligning behavior across modules. Emphasized robust unit testing and clear documentation throughout, resulting in more stable releases and improved maintainability of backend systems.