Coderhouse
Professor · AI Automation 2026 — now
Teaching how to automate processes with artificial intelligence and code.
01 / AboutPortfolio · 2026
I'm Juanca.
Product Engineer
I build digital products end to end: from deciding what to build to putting it in people's hands.
For 6+ years I've worked on product teams in banking, streaming, travel, legal tech and fintech. I started in frontend at Santander and grew into full-stack and product work: payment platforms, Smart TV playback and generative-AI workflows.
Along the way I started building my own products: Buenard, a habit app with 200+ active users, and Pronty, a game that teaches kids to use AI. I also teach AI process automation at Coderhouse.
02 / Experience
2021 — todayTakenos
Full Stack Engineer 2026
Built the B2B platform from scratch on top of the core payments engine, reporting to the CPO: payroll and corporate cards for Bolivia.
Provincia ART
Full Stack Engineer 2025
Integrated generative AI to process court rulings, handling 100+ new cases and 1,000+ status changes a month, plus the back office to manage them.
Personal Flow
Software Engineer 2024–25
Playback frontend for Smart TV and web, focused on performance and architecture.
SKY Airline
Software Engineer 2024
Full stack on Ancillaries: rebuilt the app that sells travel packages.
Santander
Frontend Engineer 2021–23
Shipped ~10 MVPs that replaced the legacy e-cheque system for business clients, and improved accessibility across digital banking.
03 / Work
My own productsevery day.
Buenard
Native iOS app for training, nutrition and habits. 200+ active users.
About the project
My role: founder. Product, design and iOS development in SwiftUI, from idea to App Store. The Today screen brings together steps, meals, workouts, supplements and fasting, with streaks and a weekly ranking between users.
Endless curiosity.
Pronty
A 10-minute daily game that teaches kids 8–14 to use AI to study, not to copy.
About the project
My role: founder. Product, design and development with Expo and React Native, plus the web in Astro and Supabase. No generative AI inside: the guide character runs on hand-written rules, so it's safe for kids. Everything for adults sits behind a PIN.
Try the demo04 / Contact
ConsultingNow and then I join projects as a consultant. Reach out if…
…you want a website that stands out, not one more of the same.
Most websites today come out of the same template or the same prompt: they look alike and nobody remembers them. I design and build from scratch, around your brand and down to the details, so visitors feel the difference in the first few seconds. Like this one.
…you want quality, not a tasteless vibe-coded product.
Vibe coding promises an app in a weekend. It looks great in the demo, but underneath nobody understands the code: bugs keep coming back, security is an afterthought and every change breaks something else. I use AI every day, as a tool rather than a shortcut: every decision goes through engineering judgment.
…you're going beyond a website and building a business.
That calls for a deeper look: who uses it, why they come back and whether the product pays for itself. Every feature should move a number that matters (activation, retention, conversion or revenue), and we measure it together.
…you're a founder and need a technical second opinion.
What to build first, which stack to pick, how to shape the team or whether what you already have will scale. I help you make those calls with judgment, so you can move forward with confidence.