Eric Herreros
Black and white portrait of Eric Herreros

Full Stack Developer.

I turn ideas and complex processes into products that feel simple.

Mallorca, Spain

Available to join a team

Scroll to meet me

I started coding at 13. At 15, I was already exploring Linux with Fedora Silverblue. Today, I build complete products to solve real problems.

13

First lines of code

15

Linux & systems

17

Real products

For the past two years, I’ve been building end to end: from the interface to the processes that keep a business running.

Websites with purpose

Thoughtful design, solid development and SEO built into the structure.

Next.js · TypeScript · SEO

Apps that solve problems

Mobile products with users, data and a real need behind them.

Flutter · Firebase

Less repetitive work

I connect tools, automate processes and develop assistants.

n8n · APIs · Vapi

Behind the interface

Systems, databases and integrations that support the product.

Linux · PostgreSQL · Git

Claude and Codex are part of my daily workflow: exploring solutions, writing code and speeding up iterations. I own the architecture, review the result and verify that it works.

ClaudeCodex

AI expands what I can do. My judgment guides it.

A selection of what I build.

This is where code becomes something real.Try my automations and booking app

Website · Client

Sea Mallorca

A digital experience worthy of the Mediterranean.

A website for a real client in Santa Ponsa. A visual experience built around their boats and water activities.

Next.jsTypeScriptSEO

Website · Own studio

Aixat

Design, development and automation with an identity of their own.

My studio, where I turn business needs into websites, applications and processes that save work.

pynn.ai Eric HerrerosUI / UX
My redesign — Pynn
Original website — Pynn

Drag the control or use the arrow keys.

Homepage captures · 08.09.2026 · Independent proposal, not commissioned by Pynn.

Pynn · Before & after

Pynn

Same identity. A new experience.

An independent redesign proposal for Pynn. Its English message and brand colours, with a fresh way to present its innovation platform.

ReactTypeScriptGSAPUX / UI
Visit the original website

A local idea. A working app.

Ca Nostra started with a familiar problem: finding a place and people to live with in Mallorca. Here is how I connected design, data and the experience in one application.

Explore the Ca Nostra case studyCa Nostra Independent product · Mallorca
Ca Nostra room filters for price, neighbourhood and amenities
Ca Nostra home screen

Interactive demo

No need to imagine it. See an enquiry become a response, and an available slot become a booking.

EH/PLAYGROUNDDESIGN + LOGIC + EXPERIENCEDEMO

Enquiries · Classification · Responses

An enquiry arrives. Work moves forward.

Write as a customer would and follow the journey of their request.

Test environment. No messages are sent and no real bookings are made. Use fictional details.

Shall we adapt it to your business?

Let’s discuss your project

From the first chat to the final detail.

Design and development with a clear aim: you understand what we are building and can watch it take shape.

01

Understand before building.

We discuss your business, your customers and the problem you want to solve. We define what the first version needs.

Goals, priorities and scope.
02

Give the idea a shape.

I organise the screens and define a visual direction for your brand. We review the journey before development.

Structure, design and user journey.
03

Build and share.

I develop in stages, connect the necessary systems and share progress so we can make decisions with a working version.

A version you can try.
04

Test, refine and deliver.

I review mobile and desktop, forms, navigation and errors. I prepare the launch and explain how to manage the result.

Final review and launch.

At 17, CaNostra went from my computer to the press. An idea born in Mallorca that started a conversation about housing.

ib3Also interviewed on IB3 Televisió.

I’m looking for a team where I can contribute, learn and build things that matter. If you think we’re a good fit, let’s talk.

Shall we build what’s next together?

A walkthrough of Aixat

A recording of the Aixat website. No audio.