Invoicetronic, or what I've been working on recently
The most recent project I worked on is Invoicetronic, a modern API for complete management of the electronic invoicing cycle in Italy (FatturaPA/SDI). We had long used an internal API by our accounting software, which was also utilized by thousands of our end users. We decided to make our experience and expertise available to external developers, allowing them to integrate electronic invoicing into their applications quickly via a public API. Thus, the Invoicetronic project was born.