I've never ever seen any negative bias or behavior discussed towards women neither in engineering school, nor in any of the numerous job in my 12 year career. In uni, out of 120 students graduating in IT, there was exactly 1 woman. She was in the center of attention, the teachers were more tolerant to her during exams (not giving free passes though!) and overall she was cherished and very welcomed.
While working, women were/are a bit more common now, and again there is more positive bias towards them rather than equality. Not complaining, far from it, it's refreshing to see slightly different attitude at some times, and more often than not, there is no difference.
To me it seems the whole time tech jobs are just not that interesting to women, too abstract, work too nerdy and who knows what. This seems to be changing, hopefully the trend will continue. Nothing to lose, just gain for all of us.