payflow

PayFlow is a complete business suite for small and medium companies, part of the Sparken ecosystem: a point-of-sale system with electronic invoicing connected to Ecuador's tax authority (SRI), inventory management with a dedicated mobile app for stock audits, payroll control, and a marketing module for sending campaigns and promotions to customers. It also includes PayFlow Market, an e-market where businesses registered as wholesale distributors can sell inside the platform, taking delivery or pickup orders. I build and maintain it end to end: React and Next.js front ends over Spring Boot microservices with PostgreSQL, Redis and Kafka, on AWS managed with Terraform.