Denver and surrounding area jobs

Hey! My boyfriend and I are moving north of Denver in a month. I secured my job but he’s been having a difficult time. He has experience in fire protection and sales. Cintas is out of the question out there. They were not very nice when he tried to get a transfer. The Denver cintas manager was extremely rude. Anyone have any ideas or work somewhere that would hire for that position? He’s also open to changing up his career. Feel free to message me!