Engineering leader, 15+ years shipping products. Co-founded and ran Wealize Digital as CTO — a 25-person engineering team building AI-powered products and digital identity platforms, acquired in 2022. Before Wealize, VP of Engineering at Reply.ai in New York, leading the team that built an in-house NLP engine on Rasa.ai. About ten years now of shipping applied AI in production, from early chatbot platforms to LLM-powered products today.
I build AI-powered products at FounderNest in Madrid, and write about the craft of shipping them at javaguirre.net.
Pragmatic over dogmatic. Boring tech when it ships the product; interesting tech when it moves the needle. Father of two and guitarist — the practice and patience habits from one show up in how I think about the other.
- Writing: javaguirre.net — recent posts on LLM-as-judge, eval discipline, AI tooling, spec-driven engineering.
- LinkedIn: in/javaguirre
A non-exhaustive sample of repositories and contributions:
- Wealize Digital infrastructure — Terraform + Kubernetes for the digital identity stack.
- Alastria Identity Library (Python) — open client for the Alastria blockchain network, built during the Wealize years.
- Mattermost — Go backend + React Native mobile contributions across mattermost-server, mattermost-mobile, and integration plugins (JIRA, Splunk).
- Open-source Python — contributions to Django Silk and elasticsearch-py.
- NixOS — small contributions to nixpkgs.
If you're building AI-powered products, scaling an engineering team through a rough stretch, or just want to compare notes on the craft — find me on LinkedIn or via the blog.