I need dirt and professional sloping work done at my home in Ascension - who to call?

My existing home sits on an acre of land that is very bumpy and low in spots. It’s literally a pain in the neck to cut grass on with all the bumps and holes and then the back yard sits pretty low and holds water/moisture for too long. Problem is the dirt already sits close to the brick level on my slab in half the back yard and the other half is where it’s too low. The water generally drains from the house to the low area, and into nearby ditches. I’d get dirt brought in and slope it myself but im afraid I’d mess things up and end up flooding my house so I’d like the sloping to be done by a professional who knows what they’re doing.

Who can I call for this?