First, let me say that you are one of the very few brave people who stand out for a cause specially when you are not a extrovert person (like you mentioned in your post). I whole heartedly commend what you have done, and what you are doing with your team for the said cause.
Being a man, I feel ashamed and sorry on behalf of all those men who are against this hypocrisy and gender discrimination, or at-least don’t support it. This has to end! And you are doing a great job out there.
I am an engineer myself, and I make sure to object and stop when I see such incidents happening around me.
I just created an account in Medium to be able to reply on your post and I would love to support in all the ways possible, besides reposting your story on Facebook (which I already did).