Edgar Oswaldo Silva Cobian, Software Developer in Colima, Mexico
Edgar Oswaldo Silva Cobian

Software Developer in Colima, Mexico

Member since July 4, 2012
Edgar is proficient in every aspect of web application development, from front- and back-end programming to client interaction, analysis, and database design. With a varied background, he's worked in many different roles throughout his career, including leadership and management positions.
Edgar is now available for hire




Colima, Mexico



Preferred Environment

PostgreSQL, Git, Linux

The most amazing...

...thing I've done is to contribute to open source projects like Cylon, Artoo, and Gobot (robotic frameworks) and SerialPort, Sphero, and Spark (Node.js modules).


  • Software Developer

    2013 - PRESENT
    The Hybrid Group
    • Developed several robotics frameworks using different technologies including JavaScript, Ruby, and Golang among others.
    • Handled Ruby on Rails web development.
    Technologies: Go, Ruby on Rails (RoR), Ruby, Node.js, JavaScript
  • Full Stack Ruby on Rails Developer

    2015 - 2015
    Designfeed.io (via Toptal)
    • Created an image handling site for marketing applications using Ruby on Rails, React.js, JavaScript, PostgreSQL, Paperclip.
    Technologies: PostgreSQL, JavaScript, React, Ruby on Rails (RoR), Ruby
  • Web Developer

    2009 - 2011
    Acronym Media, Inc.
    • Was the main developer for Search Engine APIs (Google Adwords API and Web Services, Yahoo Marketing Solutions and Web Services, and Microsoft AdCenter Web Services for Bing/Yahoo).
    • Worked as a business analyst to analyze requirements, design, and implementations of solutions while working directly with clients in the US.
    Technologies: Agile, Scrum, MySQL, SQL, XML, JSON, Ajax, jQuery, JavaScript, HTML5, Ruby on Rails 3
  • Project Leader

    2005 - 2009
    • Analyzed, designed, and implemented web-based solutions and projects, working both as a project leader and developer through the entire cycle.
    • Led requirements gathering (direct interaction with clients), requirements analysis, and database, graphical, and application design.
    • Worked with technologies and solutions like HTML, XML, XSL, JavaScript, AJAX, Java, ASP, PHP, using frameworks like Spring Hibernate.
    • Gained database experience in SQL Server, PostgreSQL, Oracle, and MySQL and established excellent Database Design and SQL skills. Used database design tools such as Embarcadero ER/Studio, MySQL Workbench and MS Visio.
    • During this time communication and team leader skills were a must and excellent experiences came from interaction with team members and clients.
    Technologies: MySQL, Oracle, PostgreSQL, Microsoft SQL Server, Hibernate, Spring Data, Spring, PHP, ASP, Java, Ajax, JavaScript, XSL, XML, HTML
  • Web Developer

    2004 - 2004
    Oklahoma University
    • Built the CSD teachers site. Was a member of the web application team working in app development, DB Analysis and DB Design.
    • Was a member of the system error detection team and usability surveys app team.
    Technologies: CSS, HTML
  • Web Developer

    2002 - 2004
    CEUPROMED (University of Colima)
    • Worked in the development of Interactive Media Discs (Natural and Cultural Diversity of Mexico) as a programmer.
    • Involved in code development of interactive tools for the manipulation of media content.
    • Developed a web applications using PHP, ASP.NET, Flash, HTML, CSS, and MySQL.
    • Was a web developer, Asymetrix Toolbook developer, DB Designer, App Designer, and reusable code designer/developer.
    Technologies: MySQL, CSS, HTML, Flash, ASP.NET, PHP


  • CSD Teachers Site

    I worked on the development of the CSD teachers site for the University of Oklahoma.

  • WEGOHealth Sharing Hub

    Site to promote health awareness using videos and social networks. I was in charge of design, development, and implementation. I upgraded from the previous site, redesigned, generated reusable code, and added major dynamic features to make management of content easier.

  • Cylon.js

    A JavaScript Robotics Framework.

  • Artoo

    A robotics framework written in Ruby.


  • Languages

    HTML5, SQL, Ruby, JavaScript, CSS3, CoffeeScript, XML, HTML, XSL, Java, PHP, CSS, Go
  • Frameworks

    Ruby on Rails (RoR), Bootstrap, Express.js, Express.io, Ruby on Rails 3, ASP, Spring, Hibernate, ASP.NET
  • Libraries/APIs

    Google AdWords, Node.js, jQuery, AdCenter, Socket.IO, React
  • Tools

    Git, GitHub, Subversion (SVN), Flash
  • Paradigms

    Agile Software Development, Object-oriented Programming (OOP), REST, Scrum, Agile, Extreme Programming
  • Platforms

    Linux, Windows, Oracle
  • Storage

    JSON, Microsoft SQL Server, MySQL, PostgreSQL, Spring Data
  • Other



  • Bachelors Degree Degree in Computer Science
    2001 - 2005
    Universidad de Colima - Colima, Mexico
  • Exchange Program Degree in Computer Science
    2004 - 2004
    Oklahoma University - Oklahoma, USA

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