Lots of comments against this posting, but I don't find it that bad, I'm sure there are worse. If you think about the product they are building, I think this ad is suitable. They don't want to hire people who are afraid of sex. They want to hire sexually liberated developers. I don't find anything in the ad which is particularly offensive to women, unless you're just considering the photo (which I think changes if they think you are a guy or a girl).
The sexual innuendo fits. Clearly if you're offended by this, you're not the right person for this company, but I suggest they've done a good job of balancing the type of people they want to hire, without sounding like they only want horny boys who are trying to get the inside scoop on a hook-up app.