I work on the integration of point-of-sale (POS) systems with the ACBrLib NFe and ACBrLib CEP libraries, using Python for NFC-e issuance and connecting the system to a front-end developed in Java. My main responsibilities include:Integrating POS systems with ACBrLib for NFC-e issuance, ensuring the correct generation of XML and the calculation of taxes such as ICMS and PIS/COFINS directly at the point of sale (taxation according to current legislation).Implementing Docker solutions to ensure compatibility of the ACBrLib library in Linux environments, allowing simplified installation and execution of NFC-e issuance services.Developing routines that manage the entire electronic invoice lifecycle, including NFC-e cancellation processes via SEFAZ web services, in compliance with validation and contingency rules.Automating tax processes, ensuring compliance with the MOC 7.0 guidelines and SEFAZ NTs for the issuance and control of electronic invoices.

C# MVC 1-on-1 Meeting System: Developed a comprehensive system for scheduling and managing 1-on-1 meetings. Users could schedule meetings, add comments during the sessions, and mark objectives as completed. This system improved meeting efficiency and tracking for the team.On this system I also integrated it with the Google Calendar API for automated scheduling.Integration with UPS API: Facilitated the verification of package deliveries through the UPS API, which also generated and downloaded confirmation PDFs, providing more efficient delivery management.React and C# Core Integration: Successfully connected a React frontend application with a C# Core backend. This involved creating seamless communication between the client and server, enhancing the user experience through a responsive and dynamic web interface.PDF Automation Tool: Created an automation tool that logs into a website, downloads PDF files, reads the content, and extracts specific data to be saved into a database. This automation significantly reduced the time and manual effort required for data processing tasks.

I worked on the development of new features and tests for the retailer management system and participated in the creation of the API and the front-end of the desktop point-of-sale system.