# Kayo Elias — AI Engineer & Software Engineer

> Personal portfolio of Kayo Elias Gonçalves Verdan, an AI engineer and
> software engineer based in Rio de Janeiro, Brazil, working remotely for
> clients worldwide. He builds AI agents (MCP, tool calling), RAG and
> semantic-search systems (pgvector, LangChain, LangGraph), and polished web
> and mobile products with React, Next.js, React Native, Node.js, and Python.

## Site sections

- /#clients: Interactive globe of companies served — Canada (Evry Jewels,
  Montréal), United States (OnQ Renovations, Florida), Argentina (GDM Seeds),
  and Brazil (ANBIMA, Lumis Experience, CCR · Motiva, Revelo, Levva, AGROPLAY)
- /#projects: Founded products — CupCaky (personal finance app with an LLM +
  RAG assistant and MCP automations) and Nyvo (https://nyvo.live — Pix
  donation alerts for Brazilian livestreamers, OBS + TTS, Kick & Twitch)
- /#stack: AI engineering (Claude & OpenAI SDKs, MCP, RAG, LangChain,
  LangGraph, pgvector), frontend (TypeScript, React, Next.js, React Native,
  Tailwind CSS), backend & infra (Node.js, NestJS, Python, FastAPI,
  PostgreSQL, Drizzle ORM, Docker, AWS, Azure)
- /#experience: Software Engineer at Levva (GDM Seeds — React web and React
  Native front-end, plus an AI log-analysis agent); previously AI Training
  Engineer at Revelo (trained and evaluated frontier LLMs including Claude
  Opus), Software Engineer at Lumis Experience (ANBIMA production AI chatbot
  with RAG), Tech Lead at AGROPLAY (Ingressos Web — 1M+ tickets per event),
  Software Engineer at Evry Jewels (React Native app for one of Canada's
  largest jewelry brands), and iem IT (design system lead for CCR/Motiva)
- /#contact: contatodevkayo@gmail.com
- /design: Spira — his design system (Base UI + Tailwind v4) with docs

## Links

- GitHub: https://github.com/OyakSaile
- LinkedIn: https://www.linkedin.com/in/kayoeliasgverdan
- Email: contatodevkayo@gmail.com