In a fast moving market with high competition you need these qualities hence it is no secret why in average males are more employable in tech than women. This is a healthy market response and has nothing to do with sexism.
So if you are correct that increased testosterone leads to men being more driven to achieve that still leaves the fact that when a woman "overcomes" her lack of testosterone and achieves the same as a man sheis still judged as being less competent than a man.
This kind of thing is hard. I don't think there are easy solutions, but let's not pretend the problem doesn't exist.
Also I think you're right that it's a generally accepted fact that high levels of testosterone in animals is associated with more risky and aggressive behaviour.
But I'm very sceptical of the way you've linked levels of testosterone in average males to risky and aggressive behaviour, and additionally linked risky and aggressive behaviour to being more employable in tech.
However if you really believe this, I had a look on wikipedia and it links to a paper that says that men with high levels of testosterone are more likely to drink five or more alcoholic drinks a day, and to smoke. Also that men with low levels of testosterone are more likely to be obese.
Wikipedia also links to another study that says that mens' levels of testosterone generally lower when they fall in love, and recover about 1-3 years into their relationships.
Maybe you should consider this when you're next hiring, and go for a skinny, smoking, drinking male, who is not in the early stages of a relationship.
http://en.wikipedia.org/wiki/Testosterone#cite_note-pmid1019... http://en.wikipedia.org/wiki/Testosterone#cite_note-pmid1517...
*I guess this makes it sound more manly and heroic than it actually is.
Such a structure becomes "sex inclusive" (accepting biological men and women who act masculinely) and not "gender inclusive" (accepting biological men and women who act masculinely or femininely).