Alberto Guinda
AI Agent & Full-Stack Engineer · LangGraph · RAG · AI Apps
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DevFlowAI is a free, open-source suite of 20 developer tools — several powered by AI — that speed up everyday coding work in one fast, polished web app.
From regex building and JSON formatting to JWT decoding and AI-assisted commit messages, it puts the utilities developers reach for daily behind a single, clean interface. I built it end to end in Next.js 16 and React 19 with strict TypeScript, shipped as an installable PWA in 8 languages.
I held it to a hard quality bar: a perfect 100 / 100 / 100 / 100 Lighthouse score (performance, accessibility, best practices, SEO), WCAG AAA accessibility, and full CI/CD with automated security scanning (CodeQL, Semgrep, SBOM).
It's live at devflowai.dev (http://devflowai.dev) and fully open source — a working demonstration of the standard I ship at: fast, accessible, tested, and production-grade.
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A conversational AI copilot that takes a buyer from "I want to reserve" to contract and receipt. A LangGraph agent orchestrates 19 tools with human-in-the-loop confirmation before any payment, session memory, and RAG — over a transactional backend with hard guarantees (no double-booking, Stripe + webhook reconciliation, full audit) and a 3D/BIM viewer with a first-person walkthrough. Stack: TypeScript, LangGraph.js, Hono, PostgreSQL/Drizzle, React 19, react-three-fiber. LangSmith observability with GDPR PII redaction.
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