Platforms I've Built
Every project below was built end to end — strategy, architecture, and hands-on delivery — not handed off between teams. Each card shows a status label: client production, live demo, portfolio project, or similar. The numbers attached are real where stated; read the case study for scope — not every project implies a customer deployment.
AIDA — Enterprise Tax Compliance Platform
Costa Rican VAT (IVA) reconciliation rebuilt from scratch: 1.05M import rows, 6 generated reports, and a 4,900-line tax engine that replaced a legacy VBA macro.
AI Persona Clone — Voice + RAG over Your Own Documents
An AI persona that talks in your voice, retrieves only from documents you trust, and listens back — built first on Gemini, then hardened into a local-first enterprise RAG stack.
Tools Dashboard — Multi-Tenant SaaS Admin Platform
A multi-tenant admin platform with Kong 3.4 gateway (WAF + 3-tier rate limits), Google OAuth + TOTP 2FA, four databases, and an OAuth app-store that logs users into other apps with one click.
Web Teleprompter — Self-Hosted PWA with Browser-Only Speech Sync
A free, public teleprompter with four device-handoff modes (QR, multi-QR, LAN, relay+OTP) and speech-driven scroll via the browser's built-in recognition — no cloud ASR, no accounts, no database.
E-Cards Platform — Template Engine + Batch Personalization
A portfolio project demonstrating how to replace a legacy InDesign + Excel batch workflow with a web designer — ingest messy contact files, preserve layout behaviors, export individualized cards.
Tools Project — Self-Hosted Project Management Hub
A vertically integrated project platform with 21 database tables, polymorphic activity feeds, dual-mode auth, Kanban boards, and a full CRM pipeline — no Redis, no Celery, no message queue.
Cabox — AI-Powered E-Commerce Platform
Upload a product photo. Gemini 2.5 Flash identifies it, estimates a market-competitive price in Costa Rican colones, writes Spanish and English descriptions, specs, and an auto-generated SKU, and pulls promotional images via Google Custom Search. Platform-specific ad copy for Facebook, Instagram, and WhatsApp is generated on demand — one model, four AI-powered features.
Course Platform — Multi-Company Enrollment & Management System
Two interfaces, one platform. Students browse a public catalog and enroll online with reCAPTCHA, document consent, and a waiting list when courses are full. Administrators manage courses, enrollments, users, and reports. Template-based provisioning means each institution gets its own isolated infrastructure from a one-line script.