Healthcare BI · MSc CS, UniBoHealthcare BI consultant · MSc Computer Science, University of Bologna
I build data platforms and contribute to open source.
I'm Francesco Castaldi, a computer engineer in Italy. Here I collect the projects I'm proudest of and write about tech, personal finance and cycling.
Currently
Healthcare BI consultant
Data warehouses, ETL and dashboards for hospitals
MSc Computer Science
University of Bologna
Contributing to Apache Superset
Dashboards, databases and the MCP server
Selected work
Projects
Writing
Latest posts
- Building Deterministic AI Agents: Beyond Fragile Prompt ChainsArchitectural patterns for production-grade coding agents: closed-loop control, context compaction, Model Context Protocol, and fail-closed sandboxing.Tech6 min read
- Production Open Source Fixes: Lessons from Superset and TrinoDeep dive into production-grade pull requests across Apache Superset, Trino, and Mattermost: resolving CBO stats loss, API crashes, and dependency risks.Tech9 min read
- Demystifying cycling telemetry: a practical guide to power and the PMCHow normalized power, TSS, and the Performance Management Chart (CTL, ATL, TSB) turn noisy sensor data into actionable training signals.Cycling7 min read
- A boring framework for long-term investingBefore choosing an investment, build a simple decision framework around time horizon, diversification, costs and behaviour.Finance3 min read
- Automate your savings before willpower gets involvedA practical way to turn saving from a monthly decision into a quiet, repeatable part of your cash flow.Finance3 min read