Full-Stack Software Engineer · .NET, React, Angular · Puerto Rico
I build and support production systems in C#/.NET, React, Angular, TypeScript, and SQL Server on Azure, for retail/POS, payments, government, and public-health clients. I also contribute to open-source .NET and Python tooling, including the Model Context Protocol C# SDK maintained with Microsoft.
US citizen based in Puerto Rico (US Eastern hours). Open to remote full-stack, .NET, and solutions-engineering roles.
- Microsoft Agent Framework — improved Python workspace handling and Foundry evaluation payloads (#7509, #7724).
- Model Context Protocol C# SDK — contributed task-based client-tool support, protocol tracing fixes, embedded-resource guidance, and an ASP.NET Core per-user client sample (#1762, #1788, #1789, #1810).
- Hugging Face smolagents — fixed JSON-schema generation for nested
Anytypes (#2610). - React-PDF — improved document-state styling and package-manager guidance (#2114, #2120).
- mcp-use — improved Python authentication-middleware configuration (#1786).
- Portfolio — interactive engineering portfolio with AI evaluation and review demonstrations.
- youtube-to-agent — turns tutorials into tested, evidence-backed Codex skills and agents.
- reliability-bench — Playwright quality gates, AI-assisted test generation and triage, synthetic monitoring, and SLO reporting.
- Fondeo — bilingual, AI-assisted SMB financing workflow built with Next.js, TypeScript, PostgreSQL, and third-party integrations.
Python · C# / .NET · TypeScript · React · Next.js · Node.js · SQL · Azure · Docker · Playwright · MCP · LLM APIs