Raúl F. Vallina - Software Engineer
Full-Stack developer and eCommerce API integration expert


General Software Development

eCommerce Integrations

Web Design



My name is Raúl Fuente Vallina. I have a degree in Computer Sciences and I work as a full-stack Freelance Software Engineer. I'm based in Asturias (north of Spain). I love developing quality software and productive apps. My goal is to help clients to improve their business through flawless and elegant software solutions.

Back / Front

  • Java / Spring
  • Node.js
  • Javascript ES6
  • Vue.js


  • Docker
  • AWS
  • Google Cloud


  • MongoDB
  • Redis
  • PostgreSQL
  • MySQL


  • eBay
  • Amazon
  • Shopify
  • BigCommerce
  • Weebly
  • Etsy

Throughout the centuries there were men who took first steps down new roads armed with nothing but their own vision

Ayn Rand

You will never do anything in this world without courage. It is the greatest quality of the mind next to honor

Courses & Certifications

Training is essential in any career, but in Technology I think it's particularly important as this world evolves very quickly. Below, I would like to show the most outstanding courses and certifications I received throughout the years.

Contact Me

Latest articles

posted 14 Mar 2019 on spring java oauth2

Implement OAuth2 with Spring Boot 2

In this chapter I’m going to show how to do a very basic configuration of OAuth2 with spring-boot2. We are setting up the authorization and the resource server in the same server, thus it’s easier to show how everything works. Spring Boot 2 has become ready in 2018. You can read what’s new in this article

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Build your ecommerce store

Potential clients come to me and ask how to build an online shop. That’s a good question but every case must be analyzed individually. There are plenty of choices and you have to choose the one that fits best for your needs. Typical questions that come up are: Do I have to build one from scratch? How do I promote my products? How do I keep inventory synchronized if I sell from different locations?…

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