solutions

Things I've built

Software that's running in real companies today.

Pediatric growth tracking for healthcare professionals

Z-scores calculated using LMS method on Fenton 2025 and WHO standards

Growth assessment system used by doctors to track pediatric patients. Automatic Z-score calculation using the LMS method with Fenton → WHO transition. Clinical precision — not a prototype.

→ ver caso de estudio

FintechReactNode.jsPostgreSQL

Offline-first point of sale that keeps selling without internet

Offline-first synchronization for uninterrupted operation

POS system that never stops a sale. Service Worker + IndexedDB for full offline operation, automatic sync when connectivity returns. Built for businesses where 'the internet is down' can't mean 'we can't sell.'

→ ver caso de estudio

EnterpriseNext.jsC#SQL Server

Legacy portals modernized for Mexico's leading accounting software

Migration of legacy flows to modern architecture with Next.js

Modernized internal portals for CONTPAQi, one of Mexico's largest accounting software companies. Migrated legacy interfaces to Next.js while keeping full compatibility with existing C# APIs. Legacy systems made usable again.

→ ver caso de estudio