My specialty is taking over and revitalizing legacy applications — VB6, WinForms and classic MVC migrated to modern ASP.NET Core / .NET 8 — together with REST API design and SQL performance tuning that actually holds up under production load.
Over the past years I've led AI integration in production SaaS: LLM-assisted clinical features in healthcare, multi-provider AI pipelines (OpenAI, Anthropic, Google), fine-tuning datasets, RAG, and anti-hallucination guardrails that keep models from inventing diagnoses.
I own the full backend lifecycle end to end, thrive in async, documentation-driven teams, and I've worked remote with US clients for years — BairesDev, Applaudo Studios, Product Perfect — alongside a decade modernizing systems for the Dominican tax authority (DGII).
And when I'm not on contract, I build and operate my own products. Scroll down — several of them are live, in production, with real users.
🏗️Legacy → ModernVB6 → .NET 8, SOAP → REST, WinForms → Web. Done repeatedly, at government scale.
🤖AI that shipsFine-tuning, RAG, guardrails, multi-provider fallback — in real products, not demos.
📦Product mindsetFounder of multiple SaaS products: billing, tenants, deployments, support. I know what "done" means.
🗄️Database whispererSQL Server, Oracle PL/SQL, query & stored-procedure optimization on big, messy data.
