Fran H.
Senior full-stack engineer. 15 years shipping production systems, 12+ of them freelancing. Works AI-native: Claude Code and custom agents for speed, paired with CI, Playwright E2E gates, and code review so reliability doesn't suffer.
Recent work includes a HIPAA-compliant healthcare platform with a LangChain RAG assistant, a multi-tenant SaaS product with audit logging and role-based access, custom MCP servers, and Claude Code tutoring for developers at all levels.
Past production work spans 1,300+ daily optimization runs for hydropower bidding under a 99.5% SLA, oil & gas production planning across 20+ wells, a multi-country events platform serving 1,000+ companies and 2,500+ attendees, carbon-capture economic analysis, an air-traffic-control training system, and the automation of a 1 m astronomical telescope. The portfolio has the full tour.
EU resident, 6–8 h daily overlap with US office hours. English: fluent (C1).