At Fesworld, I extend and maintain a CFDI 4.0 e-invoicing engine in AL, including Payment Complement, Foreign Trade, and bulk stamping, and adapted it for three additional clients.
I designed a daily SAT CFDI download using an AL extension with Job Queue and a FastAPI service that signs requests with e.firma. I also built a leasing module with amortization, annexes, pre-invoices, and Word contracts.
I developed a recurring card payment center as a .NET 8 service integrated with Business Central, and delivered 40+ custom AL extensions, including Costa Rica e-invoicing, CFDI addenda, and reports.
At Mobiik, I develop and maintain modules for the SAT Informative Returns portal, including DIOT, provisional payments, and Cash Deposits. I also contributed to SISE 3 for the Federal Judiciary Council, integrating REST/SOAP services with e.firma.
