Women in the Tech Industry

For some reason unknown to many and known to few, the tech industry has been reserved just for men. Women in the tech industry are not often seen. The factories involving tech industry have female workers. However, they are usually working on machines, as cleaning ladies, secretaries, translators and do other more feminine jobs. Men occupy high positions as CEOs or board members. They are leading engineers and managers with high salaries and possibilities to get promoted. What about women? Are there any women occupying high positions? Of course, there are, but the number of women who perform important jobs with high risks and responsibility is much smaller comparing to the number of men. What can be the reason? Why aren