Which programming language is used in making Kickstarter.com

Hi all,
As I am new to website designing and don’t know any thing about it. I want to build a site like Kickstarter.com but don’t know from where to start. Plz tell me which programming language, platform, etc are used in building Kickstarter. Thanks

Considering their engineer openings are for ruby/rails developers one could only assume that kickstarter.com is built with ruby on rails.