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Lucas Castro

(send me a message for more informations)


  • Experienced Developer: since 2005 has experience with Java, Ruby, Elixir and Angular.
  • Entrepreneur: co-founded a successful local startup and failed others business.
  • Consultant: work as a software consultant for startups and small companies.


  • Castro & Barros Software (Web Development Company @ Teresina, Piauí)
    Software Developer and Consultant
    January/2013 - Present
    • It is my second company, focused on software development.
    • The solutions are Web, simple and the deliveries are fast.
    • The main demands are custom systems for small business.
    • The secondary demands are about product development.
    • The softwares are developed in Ruby and hosted on Heroku and AWS.
    • As a developer, I attended a wide variety of demands and companies.
    • As a consultant, I help to design simple solutions and I make training of Ruby.
  • Os Mosqueteiros (Group Buying Website @ Teresina, Piauí)
    Co-founder and Developer
    April/2010 - December/2012
    • It was my first company co­founded with four friends.
    • It was a software company (called Chipy), but this product took account.
    • Created the first group buying website of the city, on beginning of the fever.
    • As a developer, I have created the all the software in Ruby including integrations with mailing, payment processors and social networks.
    • As an owner, I have learned a bit of business management, sales, digital marketing, customer support and risks among others business stuffs.
    • We have achieved a revenue of up to US$ 100,000 per month.
    • Even today is the more well successful website of its category.
  • Credishop (Credit Card Administration Company @ Teresina, Piauí)
    Software Developer
    February/2006 - April/2012
    • Contracted with a mission of help the team to create and migrate the legacy software to Java.
    • Developed internal softwares using Java and several tools of its ecosystem.
    • Collaborated actively for jGenesis, an open source framework for help to create client/server Java application using RMI and Swing.
    • Convinced the team of six members and the CTO to use Ruby instead of Java for the legacy migrations.
    • Worked heavily on Ruby projects for billing and the call center.
    • Implanted other minor and accessory softwares, like a knowledge base and a corporative social network.


These are the most used technologies on my projects:

  • Vim
  • Ruby on Rails
  • PostgreSQL
  • Minitest
  • HTML/CSS/JavaScript
  • Twitter Bootstrap
  • Git
  • Heroku
  • AWS (SES, S3)

Most recently, working with Elixir and Ionic.


Bachelor’s Degree in Information Systems (2003 - 2007)
Facid DeVry @ Teresina, Piauí