Yard regrading advice needed

I need to get my backyard regarded including some areas raised by a few inches.

Who do I call for this sort of thing? I have about an acre with a good amount of trees that would add complexity to the job. I have called various drainage companies and none want to take on the job.

Is this something a landscape company would do or maybe a construction company or is there a specific type of contractor I should get to do this.