Careers at Facebook

How do you scale to a billion users? From the patch of dirt we build a data center on to the custom servers that power the site to our vast systems, network and database infrastructure, there is a lot behind facebook.com. We make use of existing open source technologies like Linux, memcached, MySQL, Hadoop and hbase, while developing some of our own like HipHop for PHP. In honoring our hacker roots and challenging convention by custom designing and building our software, servers and data centers from the ground up, we build the technical foundation of Facebook.