I was born in USSR and I don't recall any aspect there that would amount to "enforcing gender ratios". The way I recall the "gender politics" of the communist 1

I was born in USSR and I don't recall any aspect there that would amount to "enforcing gender ratios". The way I recall the "gender politics" of the communist 1980s was that formally, gender was effectively ignored; in practice there were quite some prejudices; but the notion of discrimination wasn't even discussed much so anything similar to "affirmative action" or even caring about gender ratio would be quite alien to that regime. And yes, there were proportionally quite many female engineers and computer scientists. I might guess that this perhaps was facilitated by prejudices/discrimination in the "more macho" fields of construction engineering and industrial engineering, so all the high school girls with good STEM results would go to math and computer science fields instead of all the programs with a focus on heavy industry - but even those had a decent proportion of female engineers.