Willingness to learn
Working in a team
Research and install modules to meet project requirements
Configure the basic modules and core settings to get a site running
Drush command line tool
Create a custom Theme from scratch which validates with good HTML/CSS.
Able to customize forms, core, themes without altering core files but by using template.php or custom modules.
Can make forms from scratch using the API - with validation and posting back to the DB/email
Can create custom modules from scratch utilizing core hooks and module hooks.
Be involved with the community, understand the naming conventions