This is my experience too. Our development staff, roughly follows stereotypical gender breakdowns

1. Product Management is pretty balanced, but tends lean towards women.

2. Quality Assurance - Trends heavily towards women. It might be that women that feel intimidated by coding or by the culture of engineering. However, I don't feel comfortable with this explanation, as I think QA requires a lot of critical thinking and analysis and much of QA is being automated...so they're coding. Maybe it's because they see other women doing it and they think: If they can, I can.

3. Software Engineering - Trends heavily towards men. We have some software engineers that are women and they're awesome.

I don't observe our engineers having gendered conversations that leave women out. It's mostly married adults, many with kids, talking about adult stuff: Career, domestic responsibilities, parenting, vacations, hobbies...etc. There's nothing gendered about that.

I don't observe our QA or Product Managers having conversations that leave men out.

It all seems very egalitarian to me. I honestly feel that if someone questioned a woman's ability to write code based on her gender, that would be met with strong opposition...and possibly warrant a strong talking to by their manager.