Idea # 2:
Completely unrelated to the first idea!
These beg for a story. I've always had a bit of a thing for the sexy maid imagery and this red haired little thing just set off all sorts of thoughts in my head. But not the usual dom employer/sub maid thing. That doesn't appeal to me. The maid being the instigator? That has promise. So I'm going to lay out a couple of ideas below but I will gladly listen to other ideas too. And all of these ideas follow the post above's general outline. Guy gets pulled into a new life of sexual exploration by the new woman (or futa I suppose).
I - MC (my character) is a married man but everything about the marriage was more business than pleasure or feeling. His wife had political aspirations and having a family made you more relatable. So she picked MC. Someone who needed the resources she offered to get the degree he wanted but couldn't afford and by doing so had to live by her rules. None of which say anything about happiness or doing anything more than playing husband and wife in public.
In comes YC (your character). The new maid with a wild streak and an inkling that he might have one too. If someone brings it out of him.
II - MC is a retired athlete (probably a fighter) who was forced to retire due to illness and injury. A man who dropped into self pity and anger and kind of retreated from society and needs a new direction in life. YC is hired by someone close to him. A manager, a friend, a family member, etc. Someone close enough to convince him to allow someone to come in and clean up. Someone who knows him well enough to pick a woman he'd find irresistible and to find a bold woman who'd challenge him.
III - MC is the son of YC's employer. Young (16-18) and moving into his mansion (or upscale loft or whatever) for the first time. Maybe his father just got married and they upscaled their home to the point of needing a maid. Or maybe MC had been living with his mother previously and is just now moving in with his father. YC takes a liking to MC and decides to ...educate him.
All just ideas off the top of my head and open for discussion.