This summer I worked on the Web Development team where I primarily focused on a project called Cesium, the brainchild of my mentor Ryan Doherty. YSlow is a great tool for examining frontend performance of websites; however, it does not keep track of the history of a particular website, and it is currently impossible to run tests automatically, thus making the job of constantly monitoring website performance tedious.
To solve these two problems, I built Cesium from the ground up using the Django web framework to instrument YSlow (through Firebug in Firefox). I was given free reign to choose the language (Python) and overall design of the application (Django + backend stuff). It really felt like the people with whom I worked valued my opinion when it came to the project, which is one of the core desires of anyone working anywhere, making it easy for me to say that my internship at Mozilla was awesome.
