Things I've shipped

I built AluminioLogo's ERP and point-of-sale system from the ground up for a hardware and aluminum distributor with several branches in Venezuela. It covers branch inventory, quotes, returns, receivables, roles and permissions, and a POS that takes payments in USD and bolivares with exchange rates. The part I'm proudest of is fiscal invoicing: a small agent runs as a Windows service in each store and prints invoices, credit notes and daily reports on certified fiscal printers. There is also an admin web app, a mobile app and a product catalog. It has been live in production since October 2026, with more than 3,000 commits. I work with Claude Code daily: I make the architecture decisions and the AI helps me move faster.

MobileWeb

2026

Nest.jsReact.jsTypeScript+12

I designed the customer credit system inside AluminioLogo, inspired by the buy-now-pay-later model that Cashea made popular in Venezuela and adapted to in-store sales. Each client can get a credit line with a USD limit and a payment term, which can come from a template per client type. At the POS a sale is charged to the line, optionally with a down payment in USD or bolívares, and the system refuses it when the line is over its limit or suspended. Partial payments are applied at the day's exchange rate and release credit as they come in. Overdue debt blocks the line automatically and unblocks it once paid, the receivables screen groups debt by age, and every change lands in an append-only history.

WebAdmin

2026

Nest.jsReact.jsTypeScript+6

A personal finance app I designed and built for my own use, tracking income, debts, goals and investments across USDT, USD, COP and VES. It is an installable, offline-capable PWA on React and Firebase with only three runtime dependencies. Balances are always derived from transactions instead of stored, and Firestore security rules validate every write on the server, backed by emulator tests and a differential test that keeps the app schemas and the rules in sync. It also has investment portfolios, Binance import, net-worth snapshots and validated backups. I shipped it with CI and a strict CSP, treating a small personal tool with production-level care.

WebFrontend

2026

React.jsVite.jsFirebase+5

I led the rebuild of RED1A1, a Mexican real-estate marketplace and professional network, across web, mobile and API. The new Next.js 16 site has a map-first home, directories, owner and admin dashboards, white-label agent websites and Stripe checkout. I shipped a new Expo app as an in-place update to the existing App Store and Google Play listings, with realtime chat, push notifications, native in-app purchases and over-the-air updates. On the Node and MongoDB backend I added realtime delivery, membership logic and scheduled jobs. Strict TypeScript, Zod validation and a 70-flow Maestro suite on Android keep it steady. This extends my earlier work on RED1A1's template pages.

WebBackend

2026

Next.jsReact.jsTypeScript+12

HUMAE is a private recruitment platform in Mexico that connects vetted candidates, client companies and an internal recruiting team. I replaced the legacy system with a full rewrite: a Laravel 12 API and a Next.js 16 front end with four role-based experiences. Candidates build profiles, take configurable psychometric tests, generate a CV and pay for membership through Stripe. Recruiters search a filtered talent directory and move people through a drag-and-drop pipeline. Companies post private vacancies and confirm interviews. I owned the architecture, backend, frontend, billing, tests with Pest, Vitest and Playwright, and the production runbook. It is live today.

WebAdmin

2026

Next.jsReact.jsTypeScript+11

These are the web tools behind Wawa's mobility operation: a CMS back office with about 38 modules, a B2B portal for companies, a partner portal, a public rentals page and a passenger check-in app for boarding. I worked full stack across the Next.js front ends and the NestJS and GraphQL API. Highlights are a live fleet map and operations monitor, bulk cost uploads from Excel, reports and exports, and phone-OTP login by SMS or WhatsApp. I helped merge the apps into one Yarn monorepo with a shared design system, and I built the QR check-in app with a live bus map. A 62-spec Cypress suite and CI checks protect it.

WebAdmin

2026

Next.jsReact.jsTypeScript+12

I built an internal back office for a Mexican rental-guarantee company, replacing spreadsheets and an older PHP system. The React and Laravel app brings branch expenses, income analysis, budgets, payroll, attendance, vacations and employee contracts into one role-based dashboard. I implemented the biweekly payroll engine with automatic period rollover, versioned recalculations and bonus tiers, vacation balances that follow Mexican labor law, contract expiry alerts, and an executive dashboard with scheduled Excel reports. I worked end to end, from the data model and cron jobs to the Material UI screens, over about ten months, through Internet 360.

WebAdmin

2026

React.jsTypeScriptMaterial UI+7

I built the website and lead system for Mobility Immigration, a Tampa immigration law firm, for the DotDev and Dulce Marketing agency. It began as a bilingual landing page and grew into a full-stack Next.js 16 product: English and Spanish routes with SEO, 23 visa-pathway pages, a payments page with financing, and a blog on Firestore with ISR. Contact forms are stored in Firestore, emailed through Resend and synced to the firm's Docketwise CRM over OAuth 2.0, with fallbacks so no lead is lost. I also built an admin area with a rich-text editor and tightened the security rules after review.

WebAdmin

2026

Next.jsReact.jsTypeScript+9

For FamPower, an insurance and financial education agency for Latino families, I built a bilingual marketing site and a separate lead-capture app. The site is a multi-page React app in Spanish and English, with per-page SEO and WhatsApp and chat integrations. The companion app lets the advisor create surveys, share them by QR code at expos, review leads, export CSV and run live raffles in a presentation mode. Supabase row level security and server-side draws keep lead data private and the raffle fair.

WebAdmin

2026

React.jsTypeScriptVite.js+5