Can you explore work from home options within or outside of the company? If you wake up earlier and spend time with doggo in the morning, doing high-energy activities, maybe you can get him to nap while you're at work. The only thing is, if he was accustomed to having an afternoon walk, this could possibly be a decrease in quality of life. Do you have any retired neighbors that can just take him outside and back in again? Many older people love dogs/animals, but don't have the resources to care for them full time, and enjoy being of assistance. It would be good to have someone nearby who knows you and your dog anyway, in case there's an issue in the future and you don't have the ability or possibly funds, to get someone to professionally look after your dog.
I don't have dogs, but I have a very needy parrot. I've been working from home for over a year now and the thing is crazy with happiness at having his favorite person around; I dread for his sake, the day I ever need to work full time outside of the home. I don't let him sit with me all day, but instead "visit" him during my breaks so he can continue to learn how to self-entertain. But lots of toys, and other birds that live in the house, plus radio and TV (and the fact that he can crap freely), keeps him occupied on the rare times I'm away for an extended period of time. I always felt sorry for people that had to rush home to "let the dog out", and it's one of the reasons I've never personally picked a dog as a companion.