I think the goal needs to be more visual. Overcoming the attitudes of “boys club” sexism in order to maintain her position is the result of achieving the visual goal of… whatever it is. If she’s just got the project of her dreams, could it be something like “pass every inspection while misogynistic saboteurs attempt to get her kicked out”. This gives her a series of challenges and also suggests the antagonists.

You’ve put this under Drama but I see a lot of comedic potential in here.

“A plucky female engineer must pass every inspection while misogynist saboteurs attempt to get her fired after she’s accidentally hired to manage the construction of a landmark skyscraper.”

I would consider having her boss as someone to whom gender is unimportant. He just wants the job done and doesn’t care who by – it’s about the bottom line for him. He could have pressure from the Chairman of the company who is a bit more old-school, and the primary antagonists are her subordinates. This makes more sense to me because they could be the least happy about the situation – taking orders from a woman – whereas, if the boss is the protagonist, he’d just fire her if he had a real problem with it. The boss character could become a bit of a mentor figure for her if he was sort of on her side and he could fight her corner a little as long as he doesn’t become a “male saviour” character.

Hope this helps.