Projects

Engineering projects with technical deep-dives by Yago Mendoza.

- Building this site: a markdown compiler, a theme system and a second brain: How a systems engineer built a personal site with a custom markdown compiler, a second brain, and an AI development partner (and what went wrong along the way). - Forecasting visual auras from event streams: a simulation-first study: A simulation-first rehearsal for forecasting a visual epileptic aura from the small visual events that may precede it, and a stricter measurement of what a model would actually be allowed to claim. - A CRM for a health-tech startup, built solo in 72 hours: A bespoke CRM for a health-tech startup, designed and shipped solo in 72 hours. A real product built as an experiment in AI-assisted engineering: 23 tables, 8 state machines, automated enrichment and stale-relationship detection. - An investment dashboard with no build step: vanilla JS and Chart.js: A vanilla JS investment dashboard built in one session with Claude 4.6. No framework, no build step, no npm install. Just a folder you double-click. - TrialGPT: from a medical report to a shortlist of eligible trials: A clinical-trial matching tool built at Foundation 29: describe your case or upload a report, and TrialGPT finds relevant trials near you in ClinicalTrials.gov and the European CTIS register, checks the inclusion and exclusion criteria against your situation clause by clause, and drafts a message to the trial coordinator. Covers the 2025 build, its eligibility reasoner and its failure modes, and how the live product works a year on.