Project · Case study
Vendas Zenix
Problem
Businesses struggled with fragmented accounting and invoicing systems—data silos, manual reconciliation errors, compliance risks.
Solution
Built a unified API-first platform integrating entities, products, taxes, invoicing, and financial reconciliation with automatic compliance (SAFT export, multi-tenant support).
My role
Architected domain-driven design backend in NestJS, designed RBAC access control, optimized database queries for high-throughput environments (Redis caching), and led DevOps setup (Docker, CI/CD).
Results
Enterprise deployment with many companies, processing many invoices weekly, 30% reduction in accounting time, full audit compliance.
Tech stack
NestJS, TypeScript, PostgreSQL, Redis, Docker, CI/CD (Azure DevOps).