I'm a web application developer. My experience is mostly developing with Java technologies and its different platforms. I hold 3 Java related certifications: SCJP, SCWCD and SCBCD.
One of my favorite hobbies is to do research about new ways and technologies to develop applications, specially web apps, and that's why I ended up using python and django.
I have evaluated other similar technologies like ruby on rails, but so far, Django is the winner.