Sandro Eric Pereira dos Santos

I've built and modernized production backend systems for Media Force, including a migration from legacy PHP platforms to distributed Go and Node.js microservices backed by PostgreSQL, Redis, and MongoDB.

I own complex backend components using gRPC, Apache Kafka, and AWS, and I re-engineered a lead management system with REST and event-driven APIs connecting buyers and ad click providers.

Previously at HostDime Brasil, I scaled client billing portals and payment gateways, built internal datacenter tools, and developed PHP, PostgreSQL, and Django applications. I also mentored a junior developer and engineering intern.

Across Vox Tecnologia and Dantel, I optimized SQL and database indexes, stabilized legacy PHP APIs, and helped scale an e-procurement platform serving more than 10,000 active users. I care about clean, maintainable code, reliable systems, observability, and solving difficult latency problems.