I believe that gender diversity contributes so much to a tech company's working environment, that I would prefer taking a female candidate with similar qualifications over any other male candidates.
That being said, she will still need to qualify!
This is a huge problem indeed!
The product I'm building is trying to solve this problem as well, by giving more tools for the recruiters to identify potentially great candidates.
I'm a full stack ninja, and I promise to start refactoring your code within a day... :-) I'm a fast learner, not afraid of new technologies and challenges, very verbal and enthusiastic.