Lorenzo Ferraz Losi

Architected financial infrastructure using UML diagrams for service topology design. Created technical specifications for PIX ecosystem ensuring regulatory compliance. Implemented 3NF database modeling for high-volume transaction integrity. Designed Redis-based PIX key management with millisecond lookups. Migrated from PostgreSQL queues to Kafka.

Implemented PIX instant payment system as official BACEN participant, following PIX manual and RSFN specifications. Designed solutions adhering to banking standards with Ledger systems and SPI integration using modular architecture. Built on Golang (Fiber), FastHTTP, PostgreSQL, Kafka, Redis, and Docker. Maintained 80%+ code coverage through rigorous testing protocols.

Engineered remittance software for BACEN's File Transfer System (STA). Created internal library modeling complex document structures with go-validator for schema validation. Developed database queries for regulatory documents (CCS, ACOS, APIX). Implemented Cron-based polling mechanism automating document generation and submission for timely compliance.

Led comprehensive BackOffice development supporting operational areas, emphasizing ombudsman and legal departments. Built centralized interface for account data, PIX keys, transaction histories, and receipt downloads. Implemented compliance features including account blocking and regulatory controls. Incorporated interactive KPI dashboards for executive reporting with Excel export capability. Backend: Golang (Fiber) with Pgx as PostgreSQL driver.

As a Software Integration Engineer, I implemented complex migration and integration solutions between legacy systems and large-scale databases into standardized ERP platforms in Brazil. Executed critical projects for major national companies including Helena-Bordon, Osklen, Souvie, Karsten, Brascol, and Paccini, while also managing complete ERP platform migrations for Nestlé and Farmaconde. Specialized in developing integrations with industry-leading ERP systems including TOTVS, Bling, Sankhya, Linx, Senior, and Millennium.

Developed internal libraries that standardized data transformation processes, improving interoperability. Adopted as company standard due to adherence to Golang project footprints. "Pluggable" modular architecture allowing ERP selection for integration.

Led modernization initiative migrating from Axway API Gateway (low-code) to custom Golang implementations. Improved performance, reduced operational complexity and licensing costs.

Resolved resource-intensive issue by implementing advanced log management system in Golang with compression and rotation mechanisms, reducing memory footprint by 70%. Periodic cleanup script with heuristic analysis freed over 200GB of unnecessary logs.

Introduced containerization and DevOps practices implementing Docker, CI/CD workflows with GitHub Actions, Portainer, Docker Compose, and GoReleaser. Replaced manual FTP deployment with automated infrastructure, reducing deployment time from hours to minutes.