Hi, I'm Goyo.

A full-stack developer with five years of experience taking digital products from the first sketch to production, across my own products, B2B applications and internal tools.

See what I have built Message me on LinkedIn

Daily stack React · TypeScript · Node · Java · AWS · PostgreSQL

Product · code · business More about me

Selected work · 01—08

What I have
built.

Real products, internal tools and growth projects. Each case explains the problem, the work and the outcome.

View all projects

Own product · Mobile app + web

Swappinc

Swap what you no longer use, without money changing hands.

An original product conceived, designed and built end to end for Android and the web.

A working Android and web beta, onboarding real users through the waitlist.

Discover the product

More selected work

Move through the list to preview each project, or open a case to see the complete process.

02 E-commerce · Fashion · Made in Spain Bullfeet An e-commerce experience where every trainer starts as a blank canvas. Outcome: Reached number one on Google for “custom trainers” in Spain and the United States. 03 Energy · B2B NexaPower From an electricity bill to useful data without typing a single line. Outcome: Bills are processed automatically, without the team entering data by hand. 04 PPE · Safety footwear · B2B Bullfeet Safety Equip a company without turning every order into a spreadsheet. Outcome: The team manages its catalogue, orders and customers from one purpose-built tool. 05 Music · Mobile app HearBound Discover a song with the immediacy of opening TikTok. Outcome: A music discovery experience with an immediate and easy-to-understand interaction model. 06 Renovations · Internal software Reintegralia From the first estimate to project tracking in one system. Outcome: Estimate requests arrive better qualified and customer and project tracking is centralised. 07 Healthcare · Dental clinic · Madrid Bucodent Turn a local search into a new patient opportunity. Outcome: Reached number one on Google for “dental clinic Plaza Castilla”. 08 Hospitality · Restaurant · Mallorca Pintamonas A website with the same personality as the restaurant. Outcome: An owned organic presence and a booking experience that reduces reliance on third-party platforms.

Experience

Product, code
and business.

Full-stack developer specialising in React and TypeScript, with experience building B2B products, internal CRMs and Shopify integrations. I have technically coordinated a team of five developers and taken products from architecture to production.

2024 — Present

Full Stack Software Engineer · Technical coordination

Bullfeet

B2B products, internal tools and production systems, from interface to deployment.

React · TypeScript · Next.js · NestJS · Shopify · AWS

2023 — 2024

Full Stack Software Engineer

Autentia Real Business

Product and service development for enterprise projects in multidisciplinary teams.

React · Kotlin · Spring Boot · Kafka · Angular

2022 — 2023

Freelance Software Engineer

Self-employed

Complete websites for businesses, covering responsive design, technical SEO, domains, hosting and production launch.

React · JavaScript · HTML/CSS · Figma · SEO

2021 — Present

Own product · Founder and full-stack developer

Swappinc

A peer-to-peer swapping startup that I defined, designed and developed end to end for Android and the web, including AI-assisted publishing, geolocation and real-time chat.

React Native · React · TypeScript · Supabase · AI · Geolocation

Open résumé Download PDF

Gregorio Bujor Santos PDF · 3 pages