I started working on the front end, dealing with design, Photoshop, Flash, UI/UX, HTML, CSS and slowly developed an interest on back-end programming. So I learned PHP, delved into Linux system administration, then Python and Ruby. I make an active effort to test every single new web application that seems interesting.
I also play regularly with virtual machines and cloud servers running several different Linux distributions (Arch Linux is my current darling).
If you want more in-depth information on my tech jobs, check my LinkedIn profile.