UNIX (and UNIX like) system administrator. As part of my job, together with the environment team, I have build and maintained a computer cluster that was the basis for dozens of virtual machines with different OSes.

PHP, Perl and Python developer. We've developed websites like www.estudiolivre.org and www.mapsys.org.br (probably not online anymore). All the work I've done here is Open Source Software and is available throught Version Control Systems (like Subversion or CVS), more details in my profile at ohloh.net.

Ruby on Rails developer. At Ikwa I've been part of the development team, using Agile methods we've developed and maintained the www.ikwa.com.br website.

Successfully completed Support Python 2.5 features in PyPy interpreter with Python Software Foundation and PyPy.

Working as freelancer in Python (and Django) related projects.

Search Platform team, supporting company websites like www.apontador.com.br/ (portuguese)

Together with some friends I joined a startup/hacker's company focused on solving problems using "web technology". More info can be found at the hacklab website (portuguese)