He may be in a grumpy mood because that's what work does to people, male and female.
If he is going out to work every day and only sees the house at the beginning and the end of the day, it's going to depress him a bit that he always comes home to an untidy house. On the other hand, if he came in and started tidying up - well, I remember someone moaning on here that their DH did this and they found it - all together now, phrase of the month - "passive-aggressive".
As someone sort of said above, a lot depends on the nature of the relationship you have established. It may annoy you that he sees you as housekeeper as well as the main carer for the child(ren). But this could be because this was not properly laid out at the start of the arrangement and he, not unreasonably, thinks that the person who is at home for the bulk of the day should do the bulk of the tidying-up.
He, for his part, may feel you are taking his income for granted and that he's just being seen as a walking wallet. A lot of men feel this way. He will see that you have the option of doing less or more housework each day as and when you can fit it in. He will feel resentful about this, because it may be that he, in his job, doesn't have the option of doing less or more X to allow him to do more Y. And he can't just come home and day that he's decided to earn less money this month.
You need to re-establish the needs and expectations of the partnership on both sides, if necessary in writing.