Selected work.

Treasury-grade personal crypto portfolio tracker

Track holdings across multiple wallets and exchanges with realtime prices, weighted-average cost basis, and clean P&L analytics. Built solo from product vision to deploy.

• Standalone components + Signals API (no NgRx, no third-party UI library).
• PostgreSQL + Row-Level Security via Supabase for safe multi-tenant data.
• Realtime price feed via CoinGecko API.
• Lighthouse 98+ desktop across Performance, Accessibility, Best Practices & SEO · 86 Performance mobile Slow 4G.

Mobile directory of local businesses — born in Venezuela, built for LATAM

Connects users with local businesses directly via WhatsApp, Instagram, and Maps — no intermediaries or commissions. Built from Figma design to native binary with enterprise architecture.

• Mobile-first with Expo Router v3 (file-based routing, protected/public groups, native modals).
• Native auth with Google Sign-In and Apple Sign-In + tokens persisted in SecureStore (OWASP A07).
• Global state with Zustand + TanStack Query with AsyncStorage persistence for offline-first UX.
• ES/EN i18n with automatic device language detection + 122 unit tests (RNTL).
• Upcoming backend: Supabase (auth, DB, Storage) · Deploy with Dokploy on Hostinger VPS.