Hell to the nine-thousand times no.
At work, I need the freedom to be able to argue with people, tell them they are idiots and complain to my colleagues about the directors till their ears fall off. (My colleagues' I mean. The directors are already incapable of listening). Shouting at someone can calling them an idiot would be very problematic if I were involved with them.
Having my partner as my junior would destroy the dynamic of our relationship. Having my partner as my senior would take the dynamic too far, and also make him hate me undoubtedly as I am an incredibly awkward employee. Working on a level or in separate areas would just be, I don't know - weird. And also partly dodging the premise of the question if it were some different department.
And goddess help us if there were some sort of office flirting going on with either one of us and a co-worker!
What I need in a partner as far as work is concerned, is someone who I can call up and rant bitterly about some stupid decision or dumb behaviour someone has committed and them to nod and tell me I am right. Working alongside my partner would run the risk of them occasionally seeing someone else's point of view or showing empathy / moderation to a colleague. And that I absolutely cannot have. What I need from a partner is someone who unquestioningly tells me I'm right after I am done complaining about my day. A partner who cannot provide that is missing a critical element of what relationships are for, imo!
Wow I personally couldn't live or work with this!
I'm going to say no (unless it's your own business). New and gf are quite similar, don't argue and have similar interests.. But too much time together only makes things stale. It's good to get home and see gf. We also both need our own time.
I say.. Ideally no.