Hi, I'm Fernando

I'm a software engineer from Buenos Aires (Argentina), currently living in Barcelona (Spain). I've been building web applications for over 15 years.

I currently work as a full-stack developer at a German startup, where I build AI-powered features with TypeScript (Next.js, Postgres, Tailwind, Vercel AI SDK). My AI workflow is Claude Code + VSCode.

Previously I led frontend teams at Comet, a US-based startup, where I grew the team from 2 to 6 and led Opik, their open-source LLM evaluation platform (15K+ stars). I owned the frontend architecture, built the TypeScript SDK, and worked with a 10+ person cross-functional squad to ship tracing, evals and tooling for AI agents.

Before that: I went through countless JavaScript libraries and frameworks, focused on performance and real-time features. Mostly startups, and earlier in my career some software consultancies.

What I'm interested in

Developer tools, data-heavy UIs and the space where frontend meets AI infrastructure. I like building things that people actually want to use. Lately I've also been exploring new AI-assisted development workflows and how they can change the way we write software day to day.

This blog

Where I write about things I find interesting: TypeScript, software patterns, AI tooling and whatever comes up. Built with TanStack Start, Tailwind CSS and Markdown.