Hey, I'm Juan Carlos
I'm a product engineer who works across frontend, backend, infrastructure, data, and AI. I take ownership beyond implementation—from understanding the problem and making technical decisions to shipping, improving, and maintaining the product.
Selected work where I owned meaningful parts of the product and its delivery.
Led the architecture and end-to-end delivery of an AI-powered SaaS platform, working from product concept through MVP across frontend, backend, data, agentic AI workflows, cloud infrastructure, and CI/CD.
Next.js · TypeScript · FastAPI · PostgreSQL · Supabase · AWS · Docker · OpenAI · LangChain
Helped build and evolve an internal ERP serving 1,000+ employees. Shipped business-critical workflows, API integrations, production improvements, and later moved into a consulting role supporting stakeholders and long-term system reliability.
React · Next.js · APIs · Microsoft Graph · Jira · PayPal · Production systems
Built and improved SaaS products, including a Shopify-integrated order-proof platform with GraphQL, webhooks, subscriptions, and fulfillment automation.
Built responsive, conversion-focused WordPress and Wix sites, landing pages, and content systems for client campaigns and businesses.
Things I build outside the job description.
A React Native app for finding nearby pickleball games, creating matches, joining games, browsing courts, coordinating players, and handling match activity.
React Native · Expo · TypeScript · Supabase · Google APIs
A turn-based roguelike card battler built around a rock-paper-scissors combat system, with progression, card rarity, bosses, and a Philippine-inspired narrative direction.
HTML · CSS · JavaScript · Game systems
An automated email assistant designed for the days you’re away. It collects and organizes incoming email, consolidates threads, and turns the backlog into a focused return brief.
FastAPI · Supabase · React · LLM workflows · Email automation
Have a product to build?