Gerhard Killesreiter has been a core Drupal contributor since 2002. He authored the original groups module, has improved the Drupal caching layer, and rewrote several of the Drupal locale and revisions subsystems. He was the core Drupal 4.7 maintainer from February of 2006 through February of 2008. He has been a member of the Drupal security team since it was created, and has served as the Drupal Association Infrastructure Manager since 2006.

Rudy Grigar was introduced to the Drupal project through the Oregon State University Open Source Lab where he worked as a systems administrator and database administrator.  At the OSL he rebuilt and expanded the caching infrastructure using Varnish and Memcached.  He also managed their MySQL and PostgreSQL databases and migrated hosted Drupal websites to an optimized stack built from Pressflow, Varnish, memcached, and APC.  

Rudy continues to work closely with Drupal as a maintainer of the drupal.org infrastructure, providing support for backend and development services.  More recently he worked on the drupal.org redesign launch and has helped various clients successfully launch or tune their websites as Director of Operations at Tag1.