Over three months, this developer delivered six features across core PagoPA repositories, focusing on backend systems and cloud infrastructure. They built an event-driven file processing pipeline in pn-portfat, integrating AWS services like SQS, Lambda, and SafeStorage using Java and CloudFormation to improve traceability and reliability. In pn-paper-channel, they streamlined service configuration and removed legacy components, while in pn-templates-engine, they enhanced documentation and introduced static parameter management for template rendering with FreeMarker. Their work on pn-delivery and pn-national-registries added multi-version API support and richer address data, emphasizing backward compatibility, maintainability, and robust testing throughout the development process.