In the very early stage of my company, we wanted to outsource some UX work. After an exhausting review of applicants on one of the freelance sites out there, we finally settled on a Pakistani woman who had the best balance of portfolio vs cost.
At the initial Skype call, there was no video. And it turned out to be a guy speaking in a very high voice. We didn't really care and just went along with it (after a call or two he dropped his octave significantly, but everything continued with the original female name). But it was curious that this enterprising individual decided that the best way to stand out from the countless other developers with similar demographics he was competing against was to pretend to be a woman.
I do suspect that the presumed bias that women aren't actually as skilled and got where they are because of gender preference, while an uncomfortable bias for women, does make it so that a woman with equal skill to a male candidate is perceived as a greater rarity/find because "oh wow, this one is legit." (Not saying women are actually less likely to be legit, just saying the perception that is true can work to board in the opposite direction). I'd be extremely curious to see the classic "attach picture to resume/work sample" experiment done for tech with actual hiring managers. I'd be very surprised if the work with the female photo has a lower net score than the male photo across the experimental groups.