Javier Andrés Mansilla, Software Developer in Argentina
Javier Andrés Mansilla

Software Developer in Argentina

Member since April 10, 2013
Javier is a Technical Lead/Developer/Entrepreneur, well-versed in web development and the automated testing of large scale projects. With proven problem solving skills, he's an enthusiastic supporter of Test Driven Development. Experienced in building applications under performance demands.
Javier is now available for hire



  • Python, 9 years
  • HTML, 8 years
  • Unit Testing, 8 years
  • Test-driven Development (TDD), 7 years
  • JavaScript, 6 years
  • Django, 3 years





Preferred Environment

Linux (ubuntu preferred), GIT, using Komodo Edit

The most amazing...

...I've ever done was design and develop a customized MRP to help a major aircraft company famously increase its efficiency.


  • Technical Lead, Web Developer

    2009 - PRESENT
    • Built a social media crawler and metadata extractor in Python.
    • Led the technical aspects and architecture of an MRP built in Django for a large scale factory related to the aircraft industry. Developed with strong unit-testing coverage and a Continuous Integration monitor.
    • Analyzed, researched, and evaluated testing methodologies, practices, and tools (unit testing, fuctional testing, front-end testing, runners, Continuous Integration).
    • Developed a Flask application for highly interactive systems.
    • Created a database migrator from the Plone CMS database (ZODB) to SQL.
    • Handled the architectural design and construction of a Django website for nightclub discounts and benefits with social network integration.
    Technologies: Python, HTML, CSS, JavaScript, SQL
  • Web Developer

    2004 - 2009
    • Developed personalizations and extensions to the Plone web framework for building CMSes, intranets, and Portals.
    • Implemented Salesforce integration with Plone.
    • Improved Plone extension for providing eCommerce integration.
    • Integrated with Google Maps.
    • Developed a distributed business directory, deployed on several instances which communicated amongst themselves.
    Technologies: Plone, Django, JavaScript
  • Summer of Code Internship

    2008 - 2008
    • Developed a plugin for providing item batch-edition inside a CMS.
    Technologies: Python, Plone


  • Listuc (Development)

    Architectural design and construction of a Django application for nightclub discounts and benefits with social networks integration. Consisted of a website built in two languages with content and static information translation, as well as Facebook and Twitter integration.

    Work included deployment with Apache server and caching (using Varnish and Memcache) for performance improvements.

  • Web Accessibility Compliance (Development)

    Implemented a set of rules defined by XLST with several additions (handmade regular expressions, HTML parsing, etc.) for serving strict HTML dynamically.

    Project involved rewriting templates and, later, the dynamic application of the rules mentioned above for user- and code-generated HTML/content.

    The goal was to produce strict HTML not only compliant with the W3C, but also with a set of particularities defined by the Italian government.


  • Languages

    Python, HTML, CSS, JavaScript, SQL, C
  • Frameworks

    Django, Plone
  • Paradigms

    Unit Testing, Test-driven Development (TDD), Object-oriented Programming (OOP), Agile Software Development, Functional Programming
  • Platforms

    Linux, Windows
  • Libraries/APIs

    Twitter API, jQuery
  • Storage

    PostgreSQL, MongoDB, MySQL
  • Other

  • Tools

    Git, Subversion (SVN), Apache, Git Flow


  • Analyst's degree in Computer science
    2002 - 2012
    National University - Cordoba, Argentina

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