things I've built

The Pain Forecast

Jun 2026

A "national weather service for cycling suffering." Feed it your gearing, weight and FTP and it forecasts any climb — the watts the gradient demands, the warning level you're riding into, and exactly where you'll crack. Built with Next.js + TypeScript and a client-side physics engine.

Hanko: Coffee Passport

Apr 2026

Passport-style companion app for coffee lovers to collect stamps from local cafés.

Tagomoto: Home Organizer

Apr 2026

A calm iOS notebook for turning places, routes, and personal memories into simple hand-drawn grid maps. https://tagomoto.jechocarlos.dev/

Taskmaster

Mar 2026

Infrastructure for turning a product vision into an engineering plan scoped to what your team can realistically deliver.

Gen AI CoE Services Ecosystem

Jun 2025

Internal AI platform for Cambridge University Press & Assessment — vision, architecture, and company-wide rollout.

Lesson Planner + Assessments Generation

Mar 2025

AI-generated lesson plans with filled educational content and PDF output for Cambridge's learning teams.

Academic Chat AI

Jun 2023

Internal ChatGPT-style platform for Cambridge academics and editorial teams — started as a pet project, became a product.

Keebot

Mar 2023

Discord bot managing the Keebisoria keyboard marketplace — buy/sell/trade posts, vouch system, and reputation tracking for a Philippine mechanical keyboard community.