Job & dog. Help.

I recently got a job but the problem is me and my husband are both working now and I’m worried about leaving my dog here all day.. my dog is 3. He works 9-5 and has a 30 minute break (he lives 3 minutes from work) that he is able to stop by for a couple minutes.

I don’t know my schedule yet. Will my dog be lonely all day? He does have 2 brothers that can stop in and let him out and play with him for an hour or so but not everyday.