I am one of the maintainers of the migration subsystem (Migrate API) in Drupal core.
I moderate the weekly Drupal Usability meeting.
I am a member of the Drupal security team.
I choose to work with Drupal, and other open-source software, because I hate the idea of duplicated effort. When I solve a problem, I want to share my solution so that no one else has to struggle with it.