STEP intern does explicitly mean female engineer under 20 with ~1 year of university. STEP is a diversity program and Google is quite explicit about its goals.
Also I don't like it as an internship program. Interns generally do useful work, their internship project is something that the hosting team needs. STEP interns generally don't, their project is educational (that is, won't be used), and the internship involves a lot more lectures (as in, sitting in a conference room and listening to somebody). It's good for some people I guess but if you wanted to "work at Google", STEP isn't it. It is a foot in the door towards getting in as a regular intern next year, though, so if you're OK with wasting a summer then it's a good option.
Oh, one more thing -- interns are currently enrolled in a university (which explains the ages).
Also I don't like it as an internship program. Interns generally do useful work, their internship project is something that the hosting team needs. STEP interns generally don't, their project is educational (that is, won't be used), and the internship involves a lot more lectures (as in, sitting in a conference room and listening to somebody). It's good for some people I guess but if you wanted to "work at Google", STEP isn't it. It is a foot in the door towards getting in as a regular intern next year, though, so if you're OK with wasting a summer then it's a good option.
Oh, one more thing -- interns are currently enrolled in a university (which explains the ages).