Technical Lead, Solutions Architect & Senior Java Developer HARDTECH S.A.S.
I lead technical discovery and security architecture design for BizzHub, a Java-based orchestrator that synchronizes e-commerce platforms including VTEX, Shopify, and MercadoLibre with corporate ERP systems. I document integrations using C4 and UML diagrams and define secure flows for sensitive data. I architect and develop VTEX, Shopify, and PrestaShop integrations with SAP B1, SAP HANA, Mahalo, SIESA, ADVICOM, ICG, CEGID, and JDEdwards through REST APIs, SOAP services, and direct database connections.
I design, architect, and develop a carrier hub integrating Colombian, Ecuadorian, and international carriers such as Coordinadora, Servientrega, LaarCourier, FedEx, DHL, Enviame, Mensajeros Urbanos, Quick, QuickGo, and Urbano. The platform selects the best shipping carrier based on delivery cost, distance, and delivery time.
I perform STRIDE threat modeling for critical integrations involving financial systems and customer data, audit authorization models in VTEX Master Data, secure GraphQL endpoints in VTEX IO, and manage JWT and AppKey/AppToken credential lifecycles. I promote DevSecOps practices through CI/CD pipelines, pre-commit secret scanning, PCI DSS segmentation controls, and secure code reviews assisted by Claude Code, Gemini, and ChatGPT.
I also designed and developed MicroPOS, a scalable, event-driven retail point-of-sale platform with promotions, discount coupons, store price lists, multi-cart, suspended purchases, multi-store and multi-register support, multiple payment options, credit notes, gift cards, Medianet and DataFast pinpad integrations, SAP HANA integration, and automatic synchronization of stores and resources.