Products, clients and side projects.

Oct 2026 · 48 hours

AI editorial filter that decides in milliseconds whether each piece of content goes out and, if not, fixes it on its own. JEV (TypeSafe) answers 12 questions per piece, the code applies the brand's policy, the AI fixes what fails and JEV checks it again. 1,000 decisions in 4.5 s, 80–87% accuracy, 42% resolved without a person and 0 risky pieces approved on their own. The same engine segments sign-ups for the sales team. Built in 48 hours with Haron Acosta.

• AI
• Hackathon
• Next.js
• Open source

Necesitas Bot

Tech lead · Vitrina Online

Nov 2025 – Present · 5 mos

AI customer service on WhatsApp for an online store: first reply went from 7 hours to ~2 minutes and the chat team from 10 to 2–3 people, saving ~US$2,100 a month. Handles payments, shipping and catalog.

• WhatsApp
• AI
• Shopify
• Payments
• E-commerce

Tizza

Lead developer

Nov 2025 – Present · 5 mos

An AI study platform for math, physics and chemistry, used by 430+ students. I built it solo for web, iOS and Android, with an AI tutor, quizzes and tools for teachers.

• AI
• Education
• Mobile app
• Web

Jun 2025 – Aug 2025 · 3 mos

A WhatsApp AI assistant that checks payments and tracks cash flow in real time: operations went from 12 people to 3 while serving twice as many customers, with US$2,700 less in payroll every month for about US$150 a month in AI. I led 2 developers through delivery.

• WhatsApp
• AI
• Payments
• Automation

Petch

Mobile developer · Full-time & freelance

Sep 2023 – Aug 2024 · 1 yr full-time; Mar 2025 · 1 mo freelance

A pet-care app. For a year I built the mobile app, with built-in maps, and the system behind it; later I came back for a freelance sprint of improvements.

• Mobile app
• Pets
• Maps

Browser-based accounting for one or more companies: chart of accounts, journal entries, financial reports and Excel export.

• Accounting
• Web
• Open source

Astral Insights

Developer · Freelance

Feb 2025 · 1 mo

Supplier reports in Power BI: on-time delivery, lead times, defects and risk in one place, with AI-written summaries you can also listen to out loud.

• Power BI
• AI
• Reporting

Oriencoop

Frontend developer · Freelance

Dec 2024 – Jan 2025 · 2 mos

The interface for a cooperative's AI assistant: it answers questions about products, policies and procedures in real time, with a personal sign-in for each user.

• AI
• Chatbot
• Web

Soluciones JM

Frontend lead · Full-time

Aug 2024 – Feb 2025 · 7 mos

A management system to run inventory, purchasing, sales and finance from one clear interface, built to grow with the business.

• Management system
• Inventory
• Web