I'm a Drupal core developer, and a member of the security team. As well as code I have also contributed to the project with design work, documentation, accessibility and usability improvements.
I'm also one of the organisers of the many Drupal events we've held in London for the last 5 years.
Jutta Horstmann is a computer science graduate and owner of the IT consultancy "data in transit" (Bonn, Germany).
Her company provides services for Open Source software, focussing on project management, consulting, web development, database applications and content management systems.
Before, she worked in Berlin at ImmobilienScout as an Oracle developer and before that she was in charge of some Linux and UNIX Servers at the Social Science Research Center (WZB).