I did years of getting home at 8pm @Livinginacatdictatorship.
We usually have spag bol, cottage pie, chilli con or a beef stew/chicken stew, fish pie,on a saturday (not in summer). I usually make enough to freeze ahead for two weekday meals to serve three. One gets used Monday to Thursday; sometimes two, but not the same.
Other dinners are:
Curried chicken if we have a roast chicken on Sundays
Omolettes or pizza with salad one night.
Lamb (or pork) chops with greek salad
Fridays are always fish: sea bass, salmon, fish cakes usually with asparagus, roasted veg, and peas (for dh)
Gammon, egg and chips
I'd do stir fries but DH not keen.
Chicken thighs left overnight with salt/pepper/garlic/lemon and/or paprika - just bung in the oven and serve with salad and cous cous (left over thighs afe good for lunch).
Helpful stuff:
cook a big bowl of new potatoes (portions can then be halved and fried up instead of chips, bunged in the microwave with a bit of butter, made into potato salad.
Microwave bags of rice, although ot's no bother imo to cook the rice whilst making a salad.
Bagged salad leaves - no need to peel cucumber - help get a salad made in about 2-3 minutes
Good luck with your new job.