About

I'm a Staff Software Engineer based in Lisbon, with 15 years in software. Right now I'm principal architect of an AI-powered penetration testing service: autonomous agents that probe web applications the way a security tester would, inside hardened sandboxes, with guardrails, evals and prompt-injection defences. Before that I architected an internal developer platform for a bank, which grew from one tenant to about 50 teams, and helped design and scale a multi-region platform serving 60 million concurrent users. I've led teams of around 15 engineers, half of them through team leads, as architect, product owner and manager. I also mentor junior engineers through a small learning platform I run. Kalschatzi is my consultancy, named after my two dogs, Kali and Schatzi.