Portfolio & Go Lab
Senior Software Engineer
Backend • Go • Java • SAP • React • Automation
Facial recognition for electronic commercial transactions: real-time identity checks with liveness (anti-spoofing) and a cross-check against the government driver's license database through Serpro's API. It drops into mobile or existing systems and talks only to DocuSign for the legally valid signature. Companies in more than one sector use that extra layer so the customer and the business both stay covered. A TechNegócios product, on AWS.
Wedding planning SaaS for couples and planners: themed wedding site, guest management and RSVP, symbolic gift registry with online payment, guest photos flowing from a table QR code onto a live wall at the venue, and a WhatsApp AI assistant grounded in the event's own data. A TechNegócios product, live in production.
Internal Copacol hub with corporate login and entry cards. The main modules are Copacol Agro (events and exhibitors), Events, Scale Automation (weighing, RFID, PLC and SAP), Prize wheel, Keyence reader (industrial codes and release) and Settings (users and permissions). Underneath sit a Java API, SAP and the databases; some modules reach the shop floor. Outside the hub: the Fiori gatehouse app, the Android QR reader and the shared backend. Built for Copacol — internal use.
Java services that sit on the plant PC (Windows) and run Copacol's scales and gatehouses. Not a website: JARs that listen to the RFID antenna, SAP, PLC and hardware all day. When a truck brings the tag close, the antenna tells the server, the ticket comes from MySQL, the PLC (Modbus) opens the barrier and signals the weigh-in, the scale sends the weight over TCP, the LED panel shows the message and SAP is notified — with a camera still when it helps. The architecture is multi-tenant: Cafelândia URS, Nova Aurora, Universo and Jesuítas already run it, and the design was shaped so a lot more plants can come in without redrawing the flow. Built for Copacol — internal use.