Hi from France (and apologies for my english).
As a girl in tech, I see two different issues here :
1/ There's not enough women in tech
2/ There is sexism in tech (as there is everywhere, in fact)
I'm not quite sure how to solve those : if it was that easy I hope it would have been fixed before, right?
In my opinion, focusing on "sexism in tech" is focusing on the wrong issue. The tech industry is not more or less sexist than anything else. I face sexism everywhere (at the bank, when I try to rent an apartment, on the internet, at the hospital and even in boulangeries). I feel proud to work in an industry where some (and not a few) men try to address those issues, and it seems important to me to stand against assertions that often lead to the use of old stereotypes about "nerdy tech guys that can't handle women" to explain a phenomenon that is absolutely not limited to the tech industry.
That said, I think that the awful situation Susan Fowler had to endure is more linked to a very bad company culture (I started hearing things like this about Uber many years ago, and not only about tech jobs), and the fact that there is so few women in tech that it is very hard to get the consideration we deserve, and to stand for our rights. Let alone that it's always very difficult to step up against sexual predators because of the shame that is still associated with women's sexuality.
If there had been half of women in her team, maybe her chances for some of them to stand with her against her manager's behavior would have been greater. And maybe Uber would have stand with her too in fear of loosing a bunch of good employees (all of this is of course purely conditional).
I really think that women experience sexism in every industry, and that the only difference here is that when they are enough to feel as powerful as their colleagues, or the administration, they can fight back.
So I can't agree more with Justin Pullen , there is not enough women in tech. That's the main issue to me.
How to get more women in tech? I think it's an educational system issue.
I graduated not so long ago, and it may be different outside of France, but I was fed with old stereotypes since my childhood. You'd think that with a mother gifted for math, who holds more degrees than all of the teachers I ever had, I'd never assimilate those stereotypes? WRONG. I spent 8 to 12 hours a day at school. I spent more time with teachers than with my mom. I may have been unlucky, but I had many sexists teachers in Math and Sciences, and no one in school administrations seemed to see any trouble here.
In 10th grade I had a teacher that, between other things, seemed very proud that only boys would join the math group he animated, all the girls in my class dropped maths that year.
In my freshman year, one of my programming teacher was convinced girls where unable to code. Joke's on him, I had the best grades of my year group in his classes. I stood up to him because we were many girls here and we all wanted to learn (it was the equivalent of an american Associate Degree, full of girls trying to study sciences, while the elitists degrees where full of boys). If I had been alone I'm not sure I would have ever been able to finish a semester with him.
I choose not to even try to apply to engineering schools (we have a weird Grandes Ecoles system in France) because of the sexist climate in them and what my female friends had told me about them, and got a computing arts diploma from an art school instead. There, I was the only girl in my class, and was referred to as the "women quota" by some of my fellow classmates.
Everything in school was made to prevent me from studying tech or sciences. I literally had to work my way out of the logical path to end up in tech, even though I started enjoying it in my childhood and had always wanted to work in engineering. I had many female friends who tried to do the same and few of them ended up in tech, most of them stopped at the first sexist joke from a stupid teacher, surrendered when subjected to harassment. And I get it! Why should they have to put up with this when they can study law or economics calmly? Worst of it, it's so hard to bear, that it always affect your self-esteem, your work, your mental health, your grades.
So here is what I think we should to : I think it's in school that everything starts, and that sexism can, has to be stopped. I firmly believe that it should be punished, with extreme severity. That not a single sexist joke should be allowed, and that some selective sorting should be done among teachers (some are well known for their behavior toward girls). No exception. This should change a thing, but it will take time. It's starting to move in France, I think because the tech industry is loosing it's "weird nerd industry" label and that people are starting to feel pride, and responsibility.