Building production software for real businesses. E-commerce, POS, zero-knowledge encryption, real-time applications.
634 tests across production projects | 309 tests on zero-knowledge crypto | Bilingual EN/ES
Gitanas E-commerce & POS — Daily sales, inventory, POS system serving a real Colombian lingerie business. Replaced manual operations with digital sales tracking and multi-method payments. 565 tests, ~8,000 LOC.
Password Manager — Zero-knowledge, end-to-end encrypted password manager. SRP-6a authentication, Argon2id key derivation, per-field AES-256-GCM encryption. 309 tests, 36 DB migrations, full CI/CD.
The Hermit POS & Inventory — POS and inventory system for a craft cocktail bar in Pasto, Colombia. Sales dashboard with pour cost tracking, cocktail recipes, table management, daily cash close, and offline-first sync. Tech stack specified by the business owner. ~9,800 LOC, 69 tests.
Complete e-commerce platform with integrated POS system — product catalog, sales terminal, inventory management, multiple payment methods, and employee timeclock. Used daily by a real business.
Live | 565 tests | ~8,000 LOC
Zero-knowledge architecture — master password never leaves the device. SRP-6a for authentication, Argon2id (64MB memory) for key derivation, AES-256-GCM per-field with AAD. Password generator, favorites, search, export, auto-lock, CSRF protection, 6 rate limiters.
Live | 309 tests | 36 migrations
Internal POS and inventory system for The Hermit Cocktail Bar in Pasto, Colombia. Sales dashboard with 7 chart types, cocktail recipes with pour cost tracking, table management with interactive floor plan, open tabs, purchases, expenses, daily cash close, and offline-first sync. Tech stack (Google Apps Script + Google Sheets) specified by the business owner.
~9,800 LOC | 69 tests
Bilingual landing page for a craft cocktail bar in Pasto, Colombia. 9 sections, 22-cocktail interactive menu, lightbox gallery, Google reviews, WhatsApp reservation CTA. Full SEO with JSON-LD, Open Graph, Twitter Cards.
Live | 65 tests | CI/CD
Full-stack social network with SSR for sub-2s page loads. User authentication, posts, likes, comments, follow system, custom avatars, responsive dark-mode UI. ~2,800 lines of TypeScript.
Real-time multiplayer browser game. Players join shared rooms and compete to collect coins on a dynamic canvas. Smooth collision detection, dynamic scaling, audio feedback, real-time score tracking.