Fab! So, a few tips for you. I work in an office most of the time, but I also travel for work & can't guarantee access to a microwave.
My big tips are
Buy a food flask. That way you can heat up whatever you want in your own microwave & eat it whenever you want. I usually just eat leftovers as you don't have to make anything extra. Just cook more of what you eat the night before. If you don't eat stuff that you can do that with, then make big batches of veg soup, stews etc & portion them out. Put in the freezer & take one out the night before. Then just heat up.
Things I make are
Spicy chicken broth
Vegetable curry
Veg soup
Chilli
Chicken curry
Bolognese
Mixed bean chilli
My 2nd tip is
Use frozen veg. I use frozen cut up onions & peppers. I also use the lazy garlic & chilli. Life's too short for chopping stuff like that up
& finally
Get your slow cooker out! I will often chuck a couple of chicken breasts, some onion, garlic, peppers, passata, tinned tomatoes, & some herbs & spices into the slow cooker in the evening, cook overnight then just ladle into my food flask in the morning.