© Copyright 2019 Gonzalo Rodríguez-Baltanás Díaz - All Rights Reserved

Hi there!

I am Gonzalo Rodríguez-Baltanás Díaz, I am a Ruby on Rails developer based in Spain. I do contract work but I have also launched my own projects.

I love participating in open source projects and using cutting edge technologies. I hold both a degree on Computer Science and a MBA by the university Pablo de Olavide. My hobbies are swimming, running, photography and reading

Gonzalo Rodríguez-Baltanás Díaz

Ruby on Rails Developer

Where to find me









OpenSource Projects

A Datepicker ready to use for Rails.

A Text editor ready to use for Rails.


My life in dates

  • I joined Team Satchel as senior developer. Team Satchel is building an excellent School Management System.

    June 2019
  • I did a theatre performance: La chica de Ayer.

    June 2019
  • I organised a series of presentations about testing. I made a presentation on how to use RSpec to test in an effective manner. The presentation is available here.

    May 2019
  • Presented at the local Ruby on Rails group in Seville. I talked about how to use the Interactor pattern to simplify a codebase. The presentation is available here.

    March 2019
  • Launched Coku-App, a kick ass web application for managing coworking spaces.

    September 2018
  • Stayed in Czech Republic for an acceleration programme for CokuApp.

    May 2018
  • Participated in entrepreneruship workshop Seville Startup Weekend International. My team won with a blockchain-based project.

    May 2018
  • Participated in an entrepreneruship course – iLoveEmprender – and won.

    April 2018
  • I quit my job in order to focus on my own startup

    February 2017
  • Participated in Startup Weekend Global Battle

    November 2016
  • Participated in Startup Weekend Seville > Gamification and videogames (ranked 2º best team, woot!)

    October 2016
  • Joined Haiku Learning as a freelancer

    July 2016
  • Started developing a software for coworking spaces.

    January 2016
  • Participated in Startup Weekend Global Battle: Seville

    November 2015
  • Contributed to the Hanami project, a very well designed ruby web framework.

    October 2015
  • Completed the MBA

    October 2015
  • Started studying an MBA at Pablo de Olavide University

    November 2014
  • Upgraded Google authentication system from OpenID Connect to oAuth 2. Haiku Learning

    April 2014
  • Designed, coded and launched Eucalipto, a product designed for dental clinics. Ruby on Rails & MongoDB

    September 2013
  • Open-sourced bootstrap-typeahead-rails

    August 2013
  • Led team efforts to implement a Ruby on Rails 3 API by extracting behavior from a monolithic Ruby on Rails 1.2.6 app. Haiku Learning

    May 2013
  • Open-sourced uboost-client, a ruby client for the Uboost API

    October 2012
  • Implemented a gamification system in Haiku LMS by integrating with Uboost and Credly. Haiku Learning.

    July 2013
  • Started contributing to Ruby on Rails

    2013 December
  • Open-sourced a ruby client for the Credly API

    July 2012
  • Joined Haiku Learning as a Ruby on Rails developer.

    June 2012
  • Open-sourced bootstrap-datepicker-rails. With 450,695 downloads it ought to be the most popular datepicker in rails.

    March 2012
  • Open-sourced bootstrap-wysihtml5-rails

    March 2012
  • Open-sourced DaVinci LMS, a small Learning Management System. Ruby on Rails + MongoDB.

    February 2012
  • Graduated in Computer Science by the University Pablo de Olavide.

    January 2012
  • Open-sourced Bloodchalice, a dungeon video-game in ruby. Part of Mendicant Core course

    September 2011
  • Open-sourced pugnacious_juices, a video-game coded in Ray, a Ruby game engine. Part of Mendicant Core course

    September 2011
  • Open-sourced Wordcram, a JRuby wrapper for the java word cloud generator Wordcram. Part of Mendicant Core course

    September 2011
  • I was mentored by Gregory Brown in the Mendicant University Core course. Graduated as alumni

    September 2010
  • I spent a year as a Computer Science Erasmus student in the university Notre-Dame de la Paix, Namur, Belgium.

    September 2010 - July 2011
  • B2 Advanced English, Official Academy of languages of Spain

    September 2010
  • Discovered Ruby on Rails. Spent the following week reading Agile Web Development with Rails 9 hours a day. Decided I wanted to become a professional Ruby on Rails developer. Best decision in my life.

    March 2010
  • Open-sourced UPO: The game. A space shooter coded in Python and Pygame.

  • Started studying Computer Science at the University Pablo de Olavide

  • Studied one year of Biology. Got bored and decided that I wanted to make video-games.

  • Graduated from high school

  • Coded my first website. An image of Yoda smoking weed, inside a carousel, centered using a table. True story bro :)

  • Installed Gentoo, a linux distro. Customised the Linux Kernel and compiled every single package. No GUI. I had way too much free time back then.

  • The journey begins


© Copyright 2019 Gonzalo Rodríguez-Baltanás Díaz - All Rights Reserved