Rinaldo Festa
I'm an applied AI engineer. I'm CTO and co-founder of Play New, and CTO at Cosmico, where I joined from day zero and built the AI infrastructure behind a talent-matching platform that now serves more than 500 companies. Before that I built and sold an agri-tech startup in Sicily.
These days I work mostly on evals and interpretability. Reliability is a consequence. At Play New we're building a platform for running specialized AI agents on real business work, where you stay in control of what they do. And I'm building Tessera in the open, a methodology and generator for building your own reliability eval for AI agents, over your own fragmented knowledge, reached via MCP.
Writing
writing
- 2026-06-10Tessera, First Contact
- 2026-05-30The Answer It Should Have Refused to Give
- 2026-03-19The Missing Cockpit
- 2025-12-19Memory in AI Agents
- 2025-10-12Is It a Matter of Taste?
Contact
contact
Husband to Simona, father to Amelia, once a . Reliability was a habit long before it was my work.
