Fabio Ritzel Borges

I'm a Senior Full‑Stack Engineer & AI Systems Architect with 10+ years of experience across frontend, backend, and testing. I've shipped products for companies in the US, Europe, and Brazil, always balancing solid architecture with real‑world delivery.

On the backend, I design and build production GraphQL APIs and federated architectures with TypeScript and Node.js. At BairesDev I've engineered AI‑powered checkout systems for major US telecom partners using Apollo Federation and WunderGraph, handling 1,000+ transactions per day with CI‑enforced contracts and New Relic observability end‑to‑end.

On the frontend, I have deep experience building modern React and Next.js applications for e‑commerce, enterprise dashboards, and complex form workflows. I've led Core Web Vitals and SEO improvements, implemented WCAG 2.1 AA accessibility, and created reusable component systems using TypeScript, Storybook, Jest, and Playwright.

I also build agentic AI systems and tooling. Agenthood is my open‑source multi‑agent framework where a squad of specialized agents enforce engineering standards, review code and commits, manage multi‑tier memory, and run autonomously via a TypeScript CLI. The project includes a browser‑based Studio playground with SSE streaming, 6 providers, and server‑side rate limiting. Other projects like ApolloDroid and VeriHire explore how to bring LLMs into real products with the same discipline I apply to production web systems.

My best work happens where scalable GraphQL backends, high‑quality React frontends, and AI agents meet — designing contracts, building the systems behind them, and shaping the UX that teams and users actually rely on every day.