I started my career working with hardware / networking for one year.
After that, worked 3 years in ERP project developing in VB5/6 , SQL Server 2k, CrystalReports.
I already worked 1 year integrating solutions running in IBM AS400 with Java and Linux.
The next 3 years I worked with VS 2003, VS2005 + Informix, then I receive an opportunity to work as a System Administrator, applying my knowledges that i got studing in certified courses. During this period I worked with a lot of Tools, Protocols and Operating Systems. Here some of them: Windows Server 2k, 2k3, 2k8 , Gnu/Linux ( Slackware, Debian, OpenSuse, RedHat, Fedora ), Vmware vSphere, squid, squidGuard, DNS, DHCP, Samba, Nginx, apache, Oracle, SQLServer.
Already worked with Cabling Infrastructure and UPS Systems.
Nowadays I work with Java ( Java EE, Spring, JPA, Hibernate, JSF, JMS ) + web ( HTML5, CSS3, JQuery ) + Oracle. I've been working with that about 2 years and already have an experience in Ruby on Rails on my final work degree that I liked so much.