Because the professions you listed aren't based on a skill that children develop during play in the same way that engineering is. A lot of engineering is about

Because the professions you listed aren't based on a skill that children develop during play in the same way that engineering is. A lot of engineering is about visualizing how smaller pieces of a larger whole can fit together, even if those pieces are more complex and/or more abstract than the Lego pieces that we give to kids. The professions you listed primarily rely on memory and pattern recognition which don't differ too much between the sexes.